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1504 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
d579c468d7 |
tracing updates for 6.4:
- User events are finally ready!
After lots of collaboration between various parties, we finally locked
down on a stable interface for user events that can also work with user
space only tracing. This is implemented by telling the kernel (or user
space library, but that part is user space only and not part of this
patch set), where the variable is that the application uses to know if
something is listening to the trace. There's also an interface to tell
the kernel about these events, which will show up in the
/sys/kernel/tracing/events/user_events/ directory, where it can be
enabled. When it's enabled, the kernel will update the variable, to tell
the application to start writing to the kernel.
See https://lwn.net/Articles/927595/
- Cleaned up the direct trampolines code to simplify arm64 addition of
direct trampolines. Direct trampolines use the ftrace interface but
instead of jumping to the ftrace trampoline, applications (mostly BPF)
can register their own trampoline for performance reasons.
- Some updates to the fprobe infrastructure. fprobes are more efficient than
kprobes, as it does not need to save all the registers that kprobes on
ftrace do. More work needs to be done before the fprobes will be exposed
as dynamic events.
- More updates to references to the obsolete path of
/sys/kernel/debug/tracing for the new /sys/kernel/tracing path.
- Add a seq_buf_do_printk() helper to seq_bufs, to print a large buffer line
by line instead of all at once. There's users in production kernels that
have a large data dump that originally used printk() directly, but the
data dump was larger than what printk() allowed as a single print.
Using seq_buf() to do the printing fixes that.
- Add /sys/kernel/tracing/touched_functions that shows all functions that
was every traced by ftrace or a direct trampoline. This is used for
debugging issues where a traced function could have caused a crash by
a bpf program or live patching.
- Add a "fields" option that is similar to "raw" but outputs the fields of
the events. It's easier to read by humans.
- Some minor fixes and clean ups.
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Merge tag 'trace-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- User events are finally ready!
After lots of collaboration between various parties, we finally
locked down on a stable interface for user events that can also work
with user space only tracing.
This is implemented by telling the kernel (or user space library, but
that part is user space only and not part of this patch set), where
the variable is that the application uses to know if something is
listening to the trace.
There's also an interface to tell the kernel about these events,
which will show up in the /sys/kernel/tracing/events/user_events/
directory, where it can be enabled.
When it's enabled, the kernel will update the variable, to tell the
application to start writing to the kernel.
See https://lwn.net/Articles/927595/
- Cleaned up the direct trampolines code to simplify arm64 addition of
direct trampolines.
Direct trampolines use the ftrace interface but instead of jumping to
the ftrace trampoline, applications (mostly BPF) can register their
own trampoline for performance reasons.
- Some updates to the fprobe infrastructure. fprobes are more efficient
than kprobes, as it does not need to save all the registers that
kprobes on ftrace do. More work needs to be done before the fprobes
will be exposed as dynamic events.
- More updates to references to the obsolete path of
/sys/kernel/debug/tracing for the new /sys/kernel/tracing path.
- Add a seq_buf_do_printk() helper to seq_bufs, to print a large buffer
line by line instead of all at once.
There are users in production kernels that have a large data dump
that originally used printk() directly, but the data dump was larger
than what printk() allowed as a single print.
Using seq_buf() to do the printing fixes that.
- Add /sys/kernel/tracing/touched_functions that shows all functions
that was every traced by ftrace or a direct trampoline. This is used
for debugging issues where a traced function could have caused a
crash by a bpf program or live patching.
- Add a "fields" option that is similar to "raw" but outputs the fields
of the events. It's easier to read by humans.
- Some minor fixes and clean ups.
* tag 'trace-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (41 commits)
ring-buffer: Sync IRQ works before buffer destruction
tracing: Add missing spaces in trace_print_hex_seq()
ring-buffer: Ensure proper resetting of atomic variables in ring_buffer_reset_online_cpus
recordmcount: Fix memory leaks in the uwrite function
tracing/user_events: Limit max fault-in attempts
tracing/user_events: Prevent same address and bit per process
tracing/user_events: Ensure bit is cleared on unregister
tracing/user_events: Ensure write index cannot be negative
seq_buf: Add seq_buf_do_printk() helper
tracing: Fix print_fields() for __dyn_loc/__rel_loc
tracing/user_events: Set event filter_type from type
ring-buffer: Clearly check null ptr returned by rb_set_head_page()
tracing: Unbreak user events
tracing/user_events: Use print_format_fields() for trace output
tracing/user_events: Align structs with tabs for readability
tracing/user_events: Limit global user_event count
tracing/user_events: Charge event allocs to cgroups
tracing/user_events: Update documentation for ABI
tracing/user_events: Use write ABI in example
tracing/user_events: Add ABI self-test
...
|
||
|
Linus Torvalds
|
7fa8a8ee94 |
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
switching from a user process to a kernel thread.
- More folio conversions from Kefeng Wang, Zhang Peng and Pankaj Raghav.
- zsmalloc performance improvements from Sergey Senozhatsky.
- Yue Zhao has found and fixed some data race issues around the
alteration of memcg userspace tunables.
- VFS rationalizations from Christoph Hellwig:
- removal of most of the callers of write_one_page().
- make __filemap_get_folio()'s return value more useful
- Luis Chamberlain has changed tmpfs so it no longer requires swap
backing. Use `mount -o noswap'.
- Qi Zheng has made the slab shrinkers operate locklessly, providing
some scalability benefits.
- Keith Busch has improved dmapool's performance, making part of its
operations O(1) rather than O(n).
- Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd,
permitting userspace to wr-protect anon memory unpopulated ptes.
- Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive rather
than exclusive, and has fixed a bunch of errors which were caused by its
unintuitive meaning.
- Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature,
which causes minor faults to install a write-protected pte.
- Vlastimil Babka has done some maintenance work on vma_merge():
cleanups to the kernel code and improvements to our userspace test
harness.
- Cleanups to do_fault_around() by Lorenzo Stoakes.
- Mike Rapoport has moved a lot of initialization code out of various
mm/ files and into mm/mm_init.c.
- Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for
DRM, but DRM doesn't use it any more.
- Lorenzo has also coverted read_kcore() and vread() to use iterators
and has thereby removed the use of bounce buffers in some cases.
- Lorenzo has also contributed further cleanups of vma_merge().
- Chaitanya Prakash provides some fixes to the mmap selftesting code.
- Matthew Wilcox changes xfs and afs so they no longer take sleeping
locks in ->map_page(), a step towards RCUification of pagefaults.
- Suren Baghdasaryan has improved mmap_lock scalability by switching to
per-VMA locking.
- Frederic Weisbecker has reworked the percpu cache draining so that it
no longer causes latency glitches on cpu isolated workloads.
- Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig
logic.
- Liu Shixin has changed zswap's initialization so we no longer waste a
chunk of memory if zswap is not being used.
- Yosry Ahmed has improved the performance of memcg statistics flushing.
- David Stevens has fixed several issues involving khugepaged,
userfaultfd and shmem.
- Christoph Hellwig has provided some cleanup work to zram's IO-related
code paths.
- David Hildenbrand has fixed up some issues in the selftest code's
testing of our pte state changing.
- Pankaj Raghav has made page_endio() unneeded and has removed it.
- Peter Xu contributed some rationalizations of the userfaultfd
selftests.
- Yosry Ahmed has fixed an issue around memcg's page recalim accounting.
- Chaitanya Prakash has fixed some arm-related issues in the
selftests/mm code.
- Longlong Xia has improved the way in which KSM handles hwpoisoned
pages.
- Peter Xu fixes a few issues with uffd-wp at fork() time.
- Stefan Roesch has changed KSM so that it may now be used on a
per-process and per-cgroup basis.
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Merge tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
switching from a user process to a kernel thread.
- More folio conversions from Kefeng Wang, Zhang Peng and Pankaj
Raghav.
- zsmalloc performance improvements from Sergey Senozhatsky.
- Yue Zhao has found and fixed some data race issues around the
alteration of memcg userspace tunables.
- VFS rationalizations from Christoph Hellwig:
- removal of most of the callers of write_one_page()
- make __filemap_get_folio()'s return value more useful
- Luis Chamberlain has changed tmpfs so it no longer requires swap
backing. Use `mount -o noswap'.
- Qi Zheng has made the slab shrinkers operate locklessly, providing
some scalability benefits.
- Keith Busch has improved dmapool's performance, making part of its
operations O(1) rather than O(n).
- Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd,
permitting userspace to wr-protect anon memory unpopulated ptes.
- Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive
rather than exclusive, and has fixed a bunch of errors which were
caused by its unintuitive meaning.
- Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature,
which causes minor faults to install a write-protected pte.
- Vlastimil Babka has done some maintenance work on vma_merge():
cleanups to the kernel code and improvements to our userspace test
harness.
- Cleanups to do_fault_around() by Lorenzo Stoakes.
- Mike Rapoport has moved a lot of initialization code out of various
mm/ files and into mm/mm_init.c.
- Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for
DRM, but DRM doesn't use it any more.
- Lorenzo has also coverted read_kcore() and vread() to use iterators
and has thereby removed the use of bounce buffers in some cases.
- Lorenzo has also contributed further cleanups of vma_merge().
- Chaitanya Prakash provides some fixes to the mmap selftesting code.
- Matthew Wilcox changes xfs and afs so they no longer take sleeping
locks in ->map_page(), a step towards RCUification of pagefaults.
- Suren Baghdasaryan has improved mmap_lock scalability by switching to
per-VMA locking.
- Frederic Weisbecker has reworked the percpu cache draining so that it
no longer causes latency glitches on cpu isolated workloads.
- Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig
logic.
- Liu Shixin has changed zswap's initialization so we no longer waste a
chunk of memory if zswap is not being used.
- Yosry Ahmed has improved the performance of memcg statistics
flushing.
- David Stevens has fixed several issues involving khugepaged,
userfaultfd and shmem.
- Christoph Hellwig has provided some cleanup work to zram's IO-related
code paths.
- David Hildenbrand has fixed up some issues in the selftest code's
testing of our pte state changing.
- Pankaj Raghav has made page_endio() unneeded and has removed it.
- Peter Xu contributed some rationalizations of the userfaultfd
selftests.
- Yosry Ahmed has fixed an issue around memcg's page recalim
accounting.
- Chaitanya Prakash has fixed some arm-related issues in the
selftests/mm code.
- Longlong Xia has improved the way in which KSM handles hwpoisoned
pages.
- Peter Xu fixes a few issues with uffd-wp at fork() time.
- Stefan Roesch has changed KSM so that it may now be used on a
per-process and per-cgroup basis.
* tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits)
mm,unmap: avoid flushing TLB in batch if PTE is inaccessible
shmem: restrict noswap option to initial user namespace
mm/khugepaged: fix conflicting mods to collapse_file()
sparse: remove unnecessary 0 values from rc
mm: move 'mmap_min_addr' logic from callers into vm_unmapped_area()
hugetlb: pte_alloc_huge() to replace huge pte_alloc_map()
maple_tree: fix allocation in mas_sparse_area()
mm: do not increment pgfault stats when page fault handler retries
zsmalloc: allow only one active pool compaction context
selftests/mm: add new selftests for KSM
mm: add new KSM process and sysfs knobs
mm: add new api to enable ksm per process
mm: shrinkers: fix debugfs file permissions
mm: don't check VMA write permissions if the PTE/PMD indicates write permissions
migrate_pages_batch: fix statistics for longterm pin retry
userfaultfd: use helper function range_in_vma()
lib/show_mem.c: use for_each_populated_zone() simplify code
mm: correct arg in reclaim_pages()/reclaim_clean_pages_from_list()
fs/buffer: convert create_page_buffers to folio_create_buffers
fs/buffer: add folio_create_empty_buffers helper
...
|
||
|
Linus Torvalds
|
cec24b8b6b |
Char/Misc drivers for 6.4-rc1
Here is the "big" set of char/misc and other driver subsystems for 6.4-rc1. It's pretty big, but due to the removal of pcmcia drivers, almost breaks even for number of lines added vs. removed, a nice change. Included in here are: - removal of unused PCMCIA drivers (finally!) - Interconnect driver updates and additions - Lots of IIO driver updates and additions - MHI driver updates - Coresight driver updates - NVMEM driver updates, which required some OF updates - W1 driver updates and a new maintainer to manage the subsystem - FPGA driver updates - New driver subsystem, CDX, for AMD systems - lots of other small driver updates and additions All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZEp5Eg8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ynSXgCg0kSw3vUYwpsnhAsQkoPw1QVA23sAn2edRCMa GEkPWjrROueCom7xbLMu =eR+P -----END PGP SIGNATURE----- Merge tag 'char-misc-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc drivers updates from Greg KH: "Here is the "big" set of char/misc and other driver subsystems for 6.4-rc1. It's pretty big, but due to the removal of pcmcia drivers, almost breaks even for number of lines added vs. removed, a nice change. Included in here are: - removal of unused PCMCIA drivers (finally!) - Interconnect driver updates and additions - Lots of IIO driver updates and additions - MHI driver updates - Coresight driver updates - NVMEM driver updates, which required some OF updates - W1 driver updates and a new maintainer to manage the subsystem - FPGA driver updates - New driver subsystem, CDX, for AMD systems - lots of other small driver updates and additions All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (196 commits) mcb-lpc: Reallocate memory region to avoid memory overlapping mcb-pci: Reallocate memory region to avoid memory overlapping mcb: Return actual parsed size when reading chameleon table kernel/configs: Drop Android config fragments virt: acrn: Replace obsolete memalign() with posix_memalign() spmi: Add a check for remove callback when removing a SPMI driver spmi: fix W=1 kernel-doc warnings spmi: mtk-pmif: Drop of_match_ptr for ID table spmi: pmic-arb: Convert to platform remove callback returning void spmi: mtk-pmif: Convert to platform remove callback returning void spmi: hisi-spmi-controller: Convert to platform remove callback returning void w1: gpio: remove unnecessary ENOMEM messages w1: omap-hdq: remove unnecessary ENOMEM messages w1: omap-hdq: add SPDX tag w1: omap-hdq: allow compile testing w1: matrox: remove unnecessary ENOMEM messages w1: matrox: use inline over __inline__ w1: matrox: switch from asm to linux header w1: ds2482: do not use assignment in if condition w1: ds2482: drop unnecessary header ... |
||
|
Linus Torvalds
|
556eb8b791 |
Driver core changes for 6.4-rc1
Here is the large set of driver core changes for 6.4-rc1. Once again, a busy development cycle, with lots of changes happening in the driver core in the quest to be able to move "struct bus" and "struct class" into read-only memory, a task now complete with these changes. This will make the future rust interactions with the driver core more "provably correct" as well as providing more obvious lifetime rules for all busses and classes in the kernel. The changes required for this did touch many individual classes and busses as many callbacks were changed to take const * parameters instead. All of these changes have been submitted to the various subsystem maintainers, giving them plenty of time to review, and most of them actually did so. Other than those changes, included in here are a small set of other things: - kobject logging improvements - cacheinfo improvements and updates - obligatory fw_devlink updates and fixes - documentation updates - device property cleanups and const * changes - firwmare loader dependency fixes. All of these have been in linux-next for a while with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZEp7Sw8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykitQCfamUHpxGcKOAGuLXMotXNakTEsxgAoIquENm5 LEGadNS38k5fs+73UaxV =7K4B -----END PGP SIGNATURE----- Merge tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the large set of driver core changes for 6.4-rc1. Once again, a busy development cycle, with lots of changes happening in the driver core in the quest to be able to move "struct bus" and "struct class" into read-only memory, a task now complete with these changes. This will make the future rust interactions with the driver core more "provably correct" as well as providing more obvious lifetime rules for all busses and classes in the kernel. The changes required for this did touch many individual classes and busses as many callbacks were changed to take const * parameters instead. All of these changes have been submitted to the various subsystem maintainers, giving them plenty of time to review, and most of them actually did so. Other than those changes, included in here are a small set of other things: - kobject logging improvements - cacheinfo improvements and updates - obligatory fw_devlink updates and fixes - documentation updates - device property cleanups and const * changes - firwmare loader dependency fixes. All of these have been in linux-next for a while with no reported problems" * tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (120 commits) device property: make device_property functions take const device * driver core: update comments in device_rename() driver core: Don't require dynamic_debug for initcall_debug probe timing firmware_loader: rework crypto dependencies firmware_loader: Strip off \n from customized path zram: fix up permission for the hot_add sysfs file cacheinfo: Add use_arch[|_cache]_info field/function arch_topology: Remove early cacheinfo error message if -ENOENT cacheinfo: Check cache properties are present in DT cacheinfo: Check sib_leaf in cache_leaves_are_shared() cacheinfo: Allow early level detection when DT/ACPI info is missing/broken cacheinfo: Add arm64 early level initializer implementation cacheinfo: Add arch specific early level initializer tty: make tty_class a static const structure driver core: class: remove struct class_interface * from callbacks driver core: class: mark the struct class in struct class_interface constant driver core: class: make class_register() take a const * driver core: class: mark class_release() as taking a const * driver core: remove incorrect comment for device_create* MIPS: vpe-cmp: remove module owner pointer from struct class usage. ... |
||
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Linus Torvalds
|
6df969b77e |
iommufd for 6.4
Two series:
- Reorganize how the hardware page table objects are managed,
particularly their destruction flow. Increase the selftest
test coverage in this area by creating a more complete mock
iommu driver.
This is preparation to add a replace operation for HWPT binding,
which is done but waiting for the VFIO parts to complete so there
is a user.
- Split the iommufd support for "access" to make it two step - allocate
an access then link it to an IOAS. Update VFIO and have VFIO always
create an access even for the VFIO mdevs that never do DMA.
This is also preperation for the replace VFIO series that will allow
replace to work on access types as well.
Three minor fixes:
- Sykzaller found the selftest code didn't check for overflow when
processing user VAs
- smatch noted a .data item should have been static
- Add a selftest that reproduces a syzkaller bug for batch carry already
fixed in rc
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe:
"Two series:
- Reorganize how the hardware page table objects are managed,
particularly their destruction flow. Increase the selftest test
coverage in this area by creating a more complete mock iommu
driver.
This is preparation to add a replace operation for HWPT binding,
which is done but waiting for the VFIO parts to complete so there
is a user.
- Split the iommufd support for "access" to make it two step -
allocate an access then link it to an IOAS. Update VFIO and have
VFIO always create an access even for the VFIO mdevs that never do
DMA.
This is also preperation for the replace VFIO series that will
allow replace to work on access types as well.
Three minor fixes:
- Sykzaller found the selftest code didn't check for overflow when
processing user VAs
- smatch noted a .data item should have been static
- Add a selftest that reproduces a syzkaller bug for batch carry
already fixed in rc"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (21 commits)
iommufd/selftest: Cover domain unmap with huge pages and access
iommufd/selftest: Set varaiable mock_iommu_device storage-class-specifier to static
vfio: Check the presence for iommufd callbacks in __vfio_register_dev()
vfio/mdev: Uses the vfio emulated iommufd ops set in the mdev sample drivers
vfio-iommufd: Make vfio_iommufd_emulated_bind() return iommufd_access ID
vfio-iommufd: No need to record iommufd_ctx in vfio_device
iommufd: Create access in vfio_iommufd_emulated_bind()
iommu/iommufd: Pass iommufd_ctx pointer in iommufd_get_ioas()
iommufd/selftest: Catch overflow of uptr and length
iommufd/selftest: Add a selftest for iommufd_device_attach() with a hwpt argument
iommufd/selftest: Make selftest create a more complete mock device
iommufd/selftest: Rename the remaining mock device_id's to stdev_id
iommufd/selftest: Rename domain_id to hwpt_id for FIXTURE iommufd_mock_domain
iommufd/selftest: Rename domain_id to stdev_id for FIXTURE iommufd_ioas
iommufd/selftest: Rename the sefltest 'device_id' to 'stdev_id'
iommufd: Make iommufd_hw_pagetable_alloc() do iopt_table_add_domain()
iommufd: Move iommufd_device to iommufd_private.h
iommufd: Move ioas related HWPT destruction into iommufd_hw_pagetable_destroy()
iommufd: Consistently manage hwpt_item
iommufd: Add iommufd_lock_obj() around the auto-domains hwpts
...
|
||
|
Linus Torvalds
|
6e98b09da9 |
Networking changes for 6.4.
Core
----
- Introduce a config option to tweak MAX_SKB_FRAGS. Increasing the
default value allows for better BIG TCP performances.
- Reduce compound page head access for zero-copy data transfers.
- RPS/RFS improvements, avoiding unneeded NET_RX_SOFTIRQ when possible.
- Threaded NAPI improvements, adding defer skb free support and unneeded
softirq avoidance.
- Address dst_entry reference count scalability issues, via false
sharing avoidance and optimize refcount tracking.
- Add lockless accesses annotation to sk_err[_soft].
- Optimize again the skb struct layout.
- Extends the skb drop reasons to make it usable by multiple
subsystems.
- Better const qualifier awareness for socket casts.
BPF
---
- Add skb and XDP typed dynptrs which allow BPF programs for more
ergonomic and less brittle iteration through data and variable-sized
accesses.
- Add a new BPF netfilter program type and minimal support to hook
BPF programs to netfilter hooks such as prerouting or forward.
- Add more precise memory usage reporting for all BPF map types.
- Adds support for using {FOU,GUE} encap with an ipip device operating
in collect_md mode and add a set of BPF kfuncs for controlling encap
params.
- Allow BPF programs to detect at load time whether a particular kfunc
exists or not, and also add support for this in light skeleton.
- Bigger batch of BPF verifier improvements to prepare for upcoming BPF
open-coded iterators allowing for less restrictive looping capabilities.
- Rework RCU enforcement in the verifier, add kptr_rcu and enforce BPF
programs to NULL-check before passing such pointers into kfunc.
- Add support for kptrs in percpu hashmaps, percpu LRU hashmaps and in
local storage maps.
- Enable RCU semantics for task BPF kptrs and allow referenced kptr
tasks to be stored in BPF maps.
- Add support for refcounted local kptrs to the verifier for allowing
shared ownership, useful for adding a node to both the BPF list and
rbtree.
- Add BPF verifier support for ST instructions in convert_ctx_access()
which will help new -mcpu=v4 clang flag to start emitting them.
- Add ARM32 USDT support to libbpf.
- Improve bpftool's visual program dump which produces the control
flow graph in a DOT format by adding C source inline annotations.
Protocols
---------
- IPv4: Allow adding to IPv4 address a 'protocol' tag. Such value
indicates the provenance of the IP address.
- IPv6: optimize route lookup, dropping unneeded R/W lock acquisition.
- Add the handshake upcall mechanism, allowing the user-space
to implement generic TLS handshake on kernel's behalf.
- Bridge: support per-{Port, VLAN} neighbor suppression, increasing
resilience to nodes failures.
- SCTP: add support for Fair Capacity and Weighted Fair Queueing
schedulers.
- MPTCP: delay first subflow allocation up to its first usage. This
will allow for later better LSM interaction.
- xfrm: Remove inner/outer modes from input/output path. These are
not needed anymore.
- WiFi:
- reduced neighbor report (RNR) handling for AP mode
- HW timestamping support
- support for randomized auth/deauth TA for PASN privacy
- per-link debugfs for multi-link
- TC offload support for mac80211 drivers
- mac80211 mesh fast-xmit and fast-rx support
- enable Wi-Fi 7 (EHT) mesh support
Netfilter
---------
- Add nf_tables 'brouting' support, to force a packet to be routed
instead of being bridged.
- Update bridge netfilter and ovs conntrack helpers to handle
IPv6 Jumbo packets properly, i.e. fetch the packet length
from hop-by-hop extension header. This is needed for BIT TCP
support.
- The iptables 32bit compat interface isn't compiled in by default
anymore.
- Move ip(6)tables builtin icmp matches to the udptcp one.
This has the advantage that icmp/icmpv6 match doesn't load the
iptables/ip6tables modules anymore when iptables-nft is used.
- Extended netlink error report for netdevice in flowtables and
netdev/chains. Allow for incrementally add/delete devices to netdev
basechain. Allow to create netdev chain without device.
Driver API
----------
- Remove redundant Device Control Error Reporting Enable, as PCI core
has already error reporting enabled at enumeration time.
- Move Multicast DB netlink handlers to core, allowing devices other
then bridge to use them.
- Allow the page_pool to directly recycle the pages from safely
localized NAPI.
- Implement lockless TX queue stop/wake combo macros, allowing for
further code de-duplication and sanitization.
- Add YNL support for user headers and struct attrs.
- Add partial YNL specification for devlink.
- Add partial YNL specification for ethtool.
- Add tc-mqprio and tc-taprio support for preemptible traffic classes.
- Add tx push buf len param to ethtool, specifies the maximum number
of bytes of a transmitted packet a driver can push directly to the
underlying device.
- Add basic LED support for switch/phy.
- Add NAPI documentation, stop relaying on external links.
- Convert dsa_master_ioctl() to netdev notifier. This is a preparatory
work to make the hardware timestamping layer selectable by user
space.
- Add transceiver support and improve the error messages for CAN-FD
controllers.
New hardware / drivers
----------------------
- Ethernet:
- AMD/Pensando core device support
- MediaTek MT7981 SoC
- MediaTek MT7988 SoC
- Broadcom BCM53134 embedded switch
- Texas Instruments CPSW9G ethernet switch
- Qualcomm EMAC3 DWMAC ethernet
- StarFive JH7110 SoC
- NXP CBTX ethernet PHY
- WiFi:
- Apple M1 Pro/Max devices
- RealTek rtl8710bu/rtl8188gu
- RealTek rtl8822bs, rtl8822cs and rtl8821cs SDIO chipset
- Bluetooth:
- Realtek RTL8821CS, RTL8851B, RTL8852BS
- Mediatek MT7663, MT7922
- NXP w8997
- Actions Semi ATS2851
- QTI WCN6855
- Marvell 88W8997
- Can:
- STMicroelectronics bxcan stm32f429
Drivers
-------
- Ethernet NICs:
- Intel (1G, icg):
- add tracking and reporting of QBV config errors.
- add support for configuring max SDU for each Tx queue.
- Intel (100G, ice):
- refactor mailbox overflow detection to support Scalable IOV
- GNSS interface optimization
- Intel (i40e):
- support XDP multi-buffer
- nVidia/Mellanox:
- add the support for linux bridge multicast offload
- enable TC offload for egress and engress MACVLAN over bond
- add support for VxLAN GBP encap/decap flows offload
- extend packet offload to fully support libreswan
- support tunnel mode in mlx5 IPsec packet offload
- extend XDP multi-buffer support
- support MACsec VLAN offload
- add support for dynamic msix vectors allocation
- drop RX page_cache and fully use page_pool
- implement thermal zone to report NIC temperature
- Netronome/Corigine:
- add support for multi-zone conntrack offload
- Solarflare/Xilinx:
- support offloading TC VLAN push/pop actions to the MAE
- support TC decap rules
- support unicast PTP
- Other NICs:
- Broadcom (bnxt): enforce software based freq adjustments only
on shared PHC NIC
- RealTek (r8169): refactor to addess ASPM issues during NAPI poll.
- Micrel (lan8841): add support for PTP_PF_PEROUT
- Cadence (macb): enable PTP unicast
- Engleder (tsnep): add XDP socket zero-copy support
- virtio-net: implement exact header length guest feature
- veth: add page_pool support for page recycling
- vxlan: add MDB data path support
- gve: add XDP support for GQI-QPL format
- geneve: accept every ethertype
- macvlan: allow some packets to bypass broadcast queue
- mana: add support for jumbo frame
- Ethernet high-speed switches:
- Microchip (sparx5): Add support for TC flower templates.
- Ethernet embedded switches:
- Broadcom (b54):
- configure 6318 and 63268 RGMII ports
- Marvell (mv88e6xxx):
- faster C45 bus scan
- Microchip:
- lan966x:
- add support for IS1 VCAP
- better TX/RX from/to CPU performances
- ksz9477: add ETS Qdisc support
- ksz8: enhance static MAC table operations and error handling
- sama7g5: add PTP capability
- NXP (ocelot):
- add support for external ports
- add support for preemptible traffic classes
- Texas Instruments:
- add CPSWxG SGMII support for J7200 and J721E
- Intel WiFi (iwlwifi):
- preparation for Wi-Fi 7 EHT and multi-link support
- EHT (Wi-Fi 7) sniffer support
- hardware timestamping support for some devices/firwmares
- TX beacon protection on newer hardware
- Qualcomm 802.11ax WiFi (ath11k):
- MU-MIMO parameters support
- ack signal support for management packets
- RealTek WiFi (rtw88):
- SDIO bus support
- better support for some SDIO devices
(e.g. MAC address from efuse)
- RealTek WiFi (rtw89):
- HW scan support for 8852b
- better support for 6 GHz scanning
- support for various newer firmware APIs
- framework firmware backwards compatibility
- MediaTek WiFi (mt76):
- P2P support
- mesh A-MSDU support
- EHT (Wi-Fi 7) support
- coredump support
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Introduce a config option to tweak MAX_SKB_FRAGS. Increasing the
default value allows for better BIG TCP performances
- Reduce compound page head access for zero-copy data transfers
- RPS/RFS improvements, avoiding unneeded NET_RX_SOFTIRQ when
possible
- Threaded NAPI improvements, adding defer skb free support and
unneeded softirq avoidance
- Address dst_entry reference count scalability issues, via false
sharing avoidance and optimize refcount tracking
- Add lockless accesses annotation to sk_err[_soft]
- Optimize again the skb struct layout
- Extends the skb drop reasons to make it usable by multiple
subsystems
- Better const qualifier awareness for socket casts
BPF:
- Add skb and XDP typed dynptrs which allow BPF programs for more
ergonomic and less brittle iteration through data and
variable-sized accesses
- Add a new BPF netfilter program type and minimal support to hook
BPF programs to netfilter hooks such as prerouting or forward
- Add more precise memory usage reporting for all BPF map types
- Adds support for using {FOU,GUE} encap with an ipip device
operating in collect_md mode and add a set of BPF kfuncs for
controlling encap params
- Allow BPF programs to detect at load time whether a particular
kfunc exists or not, and also add support for this in light
skeleton
- Bigger batch of BPF verifier improvements to prepare for upcoming
BPF open-coded iterators allowing for less restrictive looping
capabilities
- Rework RCU enforcement in the verifier, add kptr_rcu and enforce
BPF programs to NULL-check before passing such pointers into kfunc
- Add support for kptrs in percpu hashmaps, percpu LRU hashmaps and
in local storage maps
- Enable RCU semantics for task BPF kptrs and allow referenced kptr
tasks to be stored in BPF maps
- Add support for refcounted local kptrs to the verifier for allowing
shared ownership, useful for adding a node to both the BPF list and
rbtree
- Add BPF verifier support for ST instructions in
convert_ctx_access() which will help new -mcpu=v4 clang flag to
start emitting them
- Add ARM32 USDT support to libbpf
- Improve bpftool's visual program dump which produces the control
flow graph in a DOT format by adding C source inline annotations
Protocols:
- IPv4: Allow adding to IPv4 address a 'protocol' tag. Such value
indicates the provenance of the IP address
- IPv6: optimize route lookup, dropping unneeded R/W lock acquisition
- Add the handshake upcall mechanism, allowing the user-space to
implement generic TLS handshake on kernel's behalf
- Bridge: support per-{Port, VLAN} neighbor suppression, increasing
resilience to nodes failures
- SCTP: add support for Fair Capacity and Weighted Fair Queueing
schedulers
- MPTCP: delay first subflow allocation up to its first usage. This
will allow for later better LSM interaction
- xfrm: Remove inner/outer modes from input/output path. These are
not needed anymore
- WiFi:
- reduced neighbor report (RNR) handling for AP mode
- HW timestamping support
- support for randomized auth/deauth TA for PASN privacy
- per-link debugfs for multi-link
- TC offload support for mac80211 drivers
- mac80211 mesh fast-xmit and fast-rx support
- enable Wi-Fi 7 (EHT) mesh support
Netfilter:
- Add nf_tables 'brouting' support, to force a packet to be routed
instead of being bridged
- Update bridge netfilter and ovs conntrack helpers to handle IPv6
Jumbo packets properly, i.e. fetch the packet length from
hop-by-hop extension header. This is needed for BIT TCP support
- The iptables 32bit compat interface isn't compiled in by default
anymore
- Move ip(6)tables builtin icmp matches to the udptcp one. This has
the advantage that icmp/icmpv6 match doesn't load the
iptables/ip6tables modules anymore when iptables-nft is used
- Extended netlink error report for netdevice in flowtables and
netdev/chains. Allow for incrementally add/delete devices to netdev
basechain. Allow to create netdev chain without device
Driver API:
- Remove redundant Device Control Error Reporting Enable, as PCI core
has already error reporting enabled at enumeration time
- Move Multicast DB netlink handlers to core, allowing devices other
then bridge to use them
- Allow the page_pool to directly recycle the pages from safely
localized NAPI
- Implement lockless TX queue stop/wake combo macros, allowing for
further code de-duplication and sanitization
- Add YNL support for user headers and struct attrs
- Add partial YNL specification for devlink
- Add partial YNL specification for ethtool
- Add tc-mqprio and tc-taprio support for preemptible traffic classes
- Add tx push buf len param to ethtool, specifies the maximum number
of bytes of a transmitted packet a driver can push directly to the
underlying device
- Add basic LED support for switch/phy
- Add NAPI documentation, stop relaying on external links
- Convert dsa_master_ioctl() to netdev notifier. This is a
preparatory work to make the hardware timestamping layer selectable
by user space
- Add transceiver support and improve the error messages for CAN-FD
controllers
New hardware / drivers:
- Ethernet:
- AMD/Pensando core device support
- MediaTek MT7981 SoC
- MediaTek MT7988 SoC
- Broadcom BCM53134 embedded switch
- Texas Instruments CPSW9G ethernet switch
- Qualcomm EMAC3 DWMAC ethernet
- StarFive JH7110 SoC
- NXP CBTX ethernet PHY
- WiFi:
- Apple M1 Pro/Max devices
- RealTek rtl8710bu/rtl8188gu
- RealTek rtl8822bs, rtl8822cs and rtl8821cs SDIO chipset
- Bluetooth:
- Realtek RTL8821CS, RTL8851B, RTL8852BS
- Mediatek MT7663, MT7922
- NXP w8997
- Actions Semi ATS2851
- QTI WCN6855
- Marvell 88W8997
- Can:
- STMicroelectronics bxcan stm32f429
Drivers:
- Ethernet NICs:
- Intel (1G, icg):
- add tracking and reporting of QBV config errors
- add support for configuring max SDU for each Tx queue
- Intel (100G, ice):
- refactor mailbox overflow detection to support Scalable IOV
- GNSS interface optimization
- Intel (i40e):
- support XDP multi-buffer
- nVidia/Mellanox:
- add the support for linux bridge multicast offload
- enable TC offload for egress and engress MACVLAN over bond
- add support for VxLAN GBP encap/decap flows offload
- extend packet offload to fully support libreswan
- support tunnel mode in mlx5 IPsec packet offload
- extend XDP multi-buffer support
- support MACsec VLAN offload
- add support for dynamic msix vectors allocation
- drop RX page_cache and fully use page_pool
- implement thermal zone to report NIC temperature
- Netronome/Corigine:
- add support for multi-zone conntrack offload
- Solarflare/Xilinx:
- support offloading TC VLAN push/pop actions to the MAE
- support TC decap rules
- support unicast PTP
- Other NICs:
- Broadcom (bnxt): enforce software based freq adjustments only on
shared PHC NIC
- RealTek (r8169): refactor to addess ASPM issues during NAPI poll
- Micrel (lan8841): add support for PTP_PF_PEROUT
- Cadence (macb): enable PTP unicast
- Engleder (tsnep): add XDP socket zero-copy support
- virtio-net: implement exact header length guest feature
- veth: add page_pool support for page recycling
- vxlan: add MDB data path support
- gve: add XDP support for GQI-QPL format
- geneve: accept every ethertype
- macvlan: allow some packets to bypass broadcast queue
- mana: add support for jumbo frame
- Ethernet high-speed switches:
- Microchip (sparx5): Add support for TC flower templates
- Ethernet embedded switches:
- Broadcom (b54):
- configure 6318 and 63268 RGMII ports
- Marvell (mv88e6xxx):
- faster C45 bus scan
- Microchip:
- lan966x:
- add support for IS1 VCAP
- better TX/RX from/to CPU performances
- ksz9477: add ETS Qdisc support
- ksz8: enhance static MAC table operations and error handling
- sama7g5: add PTP capability
- NXP (ocelot):
- add support for external ports
- add support for preemptible traffic classes
- Texas Instruments:
- add CPSWxG SGMII support for J7200 and J721E
- Intel WiFi (iwlwifi):
- preparation for Wi-Fi 7 EHT and multi-link support
- EHT (Wi-Fi 7) sniffer support
- hardware timestamping support for some devices/firwmares
- TX beacon protection on newer hardware
- Qualcomm 802.11ax WiFi (ath11k):
- MU-MIMO parameters support
- ack signal support for management packets
- RealTek WiFi (rtw88):
- SDIO bus support
- better support for some SDIO devices (e.g. MAC address from
efuse)
- RealTek WiFi (rtw89):
- HW scan support for 8852b
- better support for 6 GHz scanning
- support for various newer firmware APIs
- framework firmware backwards compatibility
- MediaTek WiFi (mt76):
- P2P support
- mesh A-MSDU support
- EHT (Wi-Fi 7) support
- coredump support"
* tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2078 commits)
net: phy: hide the PHYLIB_LEDS knob
net: phy: marvell-88x2222: remove unnecessary (void*) conversions
tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.
net: amd: Fix link leak when verifying config failed
net: phy: marvell: Fix inconsistent indenting in led_blink_set
lan966x: Don't use xdp_frame when action is XDP_TX
tsnep: Add XDP socket zero-copy TX support
tsnep: Add XDP socket zero-copy RX support
tsnep: Move skb receive action to separate function
tsnep: Add functions for queue enable/disable
tsnep: Rework TX/RX queue initialization
tsnep: Replace modulo operation with mask
net: phy: dp83867: Add led_brightness_set support
net: phy: Fix reading LED reg property
drivers: nfc: nfcsim: remove return value check of `dev_dir`
net: phy: dp83867: Remove unnecessary (void*) conversions
net: ethtool: coalesce: try to make user settings stick twice
net: mana: Check if netdev/napi_alloc_frag returns single page
net: mana: Rename mana_refill_rxoob and remove some empty lines
net: veth: add page_pool stats
...
|
||
Deming Wang
|
32118bdc94 |
virt: acrn: Replace obsolete memalign() with posix_memalign()
memalign() is obsolete according to its manpage. Replace memalign() with posix_memalign() and remove malloc.h include that was there for memalign(). As a pointer is passed into posix_memalign(), initialize *p to NULL to silence a warning about the function's return value being used as uninitialized (which is not valid anyway because the error is properly checked before p is returned). Signed-off-by: Deming Wang <wangdeming@inspur.com> Link: https://lore.kernel.org/r/20230412073041.2168-1-wangdeming@inspur.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
Hao Ge
|
27d9a0fdb5 |
kmemleak-test: fix kmemleak_test.c build logic
kmemleak-test.c was moved to the samples directory in |
||
Rong Tao
|
4a1e885c6d |
samples/bpf: sampleip: Replace PAGE_OFFSET with _text address
Macro PAGE_OFFSET(0xffff880000000000) in sampleip_user.c is inaccurate,
for example, in aarch64 architecture, this value depends on the
CONFIG_ARM64_VA_BITS compilation configuration, this value defaults to 48,
the corresponding PAGE_OFFSET is 0xffff800000000000, if we use the value
defined in sampleip_user.c, then all KSYMs obtained by sampleip are (user)
Symbol error due to PAGE_OFFSET error:
$ sudo ./sampleip 1
Sampling at 99 Hertz for 1 seconds. Ctrl-C also ends.
ADDR KSYM COUNT
0xffff80000810ceb8 (user) 1
0xffffb28ec880 (user) 1
0xffff8000080c82b8 (user) 1
0xffffb23fed24 (user) 1
0xffffb28944fc (user) 1
0xffff8000084628bc (user) 1
0xffffb2a935c0 (user) 1
0xffff80000844677c (user) 1
0xffff80000857a3a4 (user) 1
...
A few examples of addresses in the CONFIG_ARM64_VA_BITS=48 environment in
the aarch64 environment:
$ sudo head /proc/kallsyms
ffff8000080a0000 T _text
ffff8000080b0000 t gic_handle_irq
ffff8000080b0000 T _stext
ffff8000080b0000 T __irqentry_text_start
ffff8000080b00b0 t gic_handle_irq
ffff8000080b0230 t gic_handle_irq
ffff8000080b03b4 T __irqentry_text_end
ffff8000080b03b8 T __softirqentry_text_start
ffff8000080b03c0 T __do_softirq
ffff8000080b0718 T __entry_text_start
We just need to replace the PAGE_OFFSET with the address _text in
/proc/kallsyms to solve this problem:
$ sudo ./sampleip 1
Sampling at 99 Hertz for 1 seconds. Ctrl-C also ends.
ADDR KSYM COUNT
0xffffb2892ab0 (user) 1
0xffffb2b1edfc (user) 1
0xffff800008462834 __arm64_sys_ppoll 1
0xffff8000084b87f4 eventfd_read 1
0xffffb28e6788 (user) 1
0xffff8000081e96d8 rcu_all_qs 1
0xffffb2ada878 (user) 1
...
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Link: https://lore.kernel.org/r/tencent_A0E82E0BEE925285F8156D540731DF805F05@qq.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
||
Jakub Kicinski
|
c2865b1122 |
bpf-next-for-netdev
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Daniel Borkmann says:
====================
pull-request: bpf-next 2023-04-13
We've added 260 non-merge commits during the last 36 day(s) which contain
a total of 356 files changed, 21786 insertions(+), 11275 deletions(-).
The main changes are:
1) Rework BPF verifier log behavior and implement it as a rotating log
by default with the option to retain old-style fixed log behavior,
from Andrii Nakryiko.
2) Adds support for using {FOU,GUE} encap with an ipip device operating
in collect_md mode and add a set of BPF kfuncs for controlling encap
params, from Christian Ehrig.
3) Allow BPF programs to detect at load time whether a particular kfunc
exists or not, and also add support for this in light skeleton,
from Alexei Starovoitov.
4) Optimize hashmap lookups when key size is multiple of 4,
from Anton Protopopov.
5) Enable RCU semantics for task BPF kptrs and allow referenced kptr
tasks to be stored in BPF maps, from David Vernet.
6) Add support for stashing local BPF kptr into a map value via
bpf_kptr_xchg(). This is useful e.g. for rbtree node creation
for new cgroups, from Dave Marchevsky.
7) Fix BTF handling of is_int_ptr to skip modifiers to work around
tracing issues where a program cannot be attached, from Feng Zhou.
8) Migrate a big portion of test_verifier unit tests over to
test_progs -a verifier_* via inline asm to ease {read,debug}ability,
from Eduard Zingerman.
9) Several updates to the instruction-set.rst documentation
which is subject to future IETF standardization
(https://lwn.net/Articles/926882/), from Dave Thaler.
10) Fix BPF verifier in the __reg_bound_offset's 64->32 tnum sub-register
known bits information propagation, from Daniel Borkmann.
11) Add skb bitfield compaction work related to BPF with the overall goal
to make more of the sk_buff bits optional, from Jakub Kicinski.
12) BPF selftest cleanups for build id extraction which stand on its own
from the upcoming integration work of build id into struct file object,
from Jiri Olsa.
13) Add fixes and optimizations for xsk descriptor validation and several
selftest improvements for xsk sockets, from Kal Conley.
14) Add BPF links for struct_ops and enable switching implementations
of BPF TCP cong-ctls under a given name by replacing backing
struct_ops map, from Kui-Feng Lee.
15) Remove a misleading BPF verifier env->bypass_spec_v1 check on variable
offset stack read as earlier Spectre checks cover this,
from Luis Gerhorst.
16) Fix issues in copy_from_user_nofault() for BPF and other tracers
to resemble copy_from_user_nmi() from safety PoV, from Florian Lehner
and Alexei Starovoitov.
17) Add --json-summary option to test_progs in order for CI tooling to
ease parsing of test results, from Manu Bretelle.
18) Batch of improvements and refactoring to prep for upcoming
bpf_local_storage conversion to bpf_mem_cache_{alloc,free} allocator,
from Martin KaFai Lau.
19) Improve bpftool's visual program dump which produces the control
flow graph in a DOT format by adding C source inline annotations,
from Quentin Monnet.
20) Fix attaching fentry/fexit/fmod_ret/lsm to modules by extracting
the module name from BTF of the target and searching kallsyms of
the correct module, from Viktor Malik.
21) Improve BPF verifier handling of '<const> <cond> <non_const>'
to better detect whether in particular jmp32 branches are taken,
from Yonghong Song.
22) Allow BPF TCP cong-ctls to write app_limited of struct tcp_sock.
A built-in cc or one from a kernel module is already able to write
to app_limited, from Yixin Shen.
Conflicts:
Documentation/bpf/bpf_devel_QA.rst
|
||
Hao Zeng
|
23acb14af1 |
samples/bpf: Fix fout leak in hbm's run_bpf_prog
Fix fout being fopen'ed but then not subsequently fclose'd. In the affected branch, fout is otherwise going out of scope. Signed-off-by: Hao Zeng <zenghao@kylinos.cn> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20230411084349.1999628-1-zenghao@kylinos.cn |
||
Boqun Feng
|
f431c5c581 |
samples: rust: print: Add sample code for Arc printing
This both demonstrates the usage of different print format in Rust and serves as a selftest for the `Display` and `Debug` implementation of `Arc` and its friends. Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Björn Roy Baron <bjorn3_gh@protonmail.com> Reviewed-by: Finn Behrens <fin@nyantec.com> Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com> Reviewed-by: Gary Guo <gary@garyguo.net> Reviewed-by: Andreas Hindborg <a.hindborg@samsung.com> Link: https://lore.kernel.org/r/20230207185216.1314638-3-boqun.feng@gmail.com [ Applied suggestions and reworded for fixing title typos. ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
||
Yi Liu
|
0a782d15e1 |
vfio/mdev: Uses the vfio emulated iommufd ops set in the mdev sample drivers
This harmonizes the no-DMA devices (the vfio-mdev sample drivers) with the emulated devices (gvt-g, vfio-ap etc.). It makes it easier to add BIND_IOMMUFD user interface which requires to return an iommufd ID to represent the device/iommufd bond. Link: https://lore.kernel.org/r/20230327093351.44505-6-yi.l.liu@intel.com Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Tested-by: Terrence Xu <terrence.xu@intel.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
||
Beau Belgrave
|
9211ddaa78 |
tracing/user_events: Use write ABI in example
The ABI has changed to use a remote write approach. Update the example to show the expected use of this new ABI. Also remove debugfs path and use tracefs to ensure example works in more environments. Link: https://lkml.kernel.org/r/20230328235219.203-9-beaub@linux.microsoft.com Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
Masami Hiramatsu (Google)
|
39d954200b |
fprobe: Skip exit_handler if entry_handler returns !0
Skip hooking function return and calling exit_handler if the entry_handler() returns !0. Link: https://lkml.kernel.org/r/167526699798.433354.10998365726830117303.stgit@mhiramat.roam.corp.google.com Cc: Florent Revest <revest@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Masami Hiramatsu (Google)
|
76d0de5729 |
fprobe: Pass entry_data to handlers
Pass the private entry_data to the entry and exit handlers so that they can share the context data, something like saved function arguments etc. User must specify the private entry_data size by @entry_data_size field before registering the fprobe. Link: https://lkml.kernel.org/r/167526696173.433354.17408372048319432574.stgit@mhiramat.roam.corp.google.com Cc: Florent Revest <revest@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
Florent Revest
|
da8bdfbd42 |
ftrace: Rename _ftrace_direct_multi APIs to _ftrace_direct APIs
Now that the original _ftrace_direct APIs are gone, the "_multi" suffixes only add confusion. Link: https://lkml.kernel.org/r/20230321140424.345218-5-revest@chromium.org Signed-off-by: Florent Revest <revest@chromium.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Florent Revest
|
23edf48309 |
ftrace: Replace uses of _ftrace_direct APIs with _ftrace_direct_multi
The _multi API requires that users keep their own ops but can enforce that an op is only associated to one direct call. Link: https://lkml.kernel.org/r/20230321140424.345218-3-revest@chromium.org Signed-off-by: Florent Revest <revest@chromium.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Florent Revest
|
59495740f7 |
ftrace: Let unregister_ftrace_direct_multi() call ftrace_free_filter()
A common pattern when using the ftrace_direct_multi API is to unregister the ops and also immediately free its filter. We've noticed it's very easy for users to miss calling ftrace_free_filter(). This adds a "free_filters" argument to unregister_ftrace_direct_multi() to both remind the user they should free filters and also to make their life easier. Link: https://lkml.kernel.org/r/20230321140424.345218-2-revest@chromium.org Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Florent Revest <revest@chromium.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
Greg Kroah-Hartman
|
1aaba11da9 |
driver core: class: remove module * from class_create()
The module pointer in class_create() never actually did anything, and it shouldn't have been requred to be set as a parameter even if it did something. So just remove it and fix up all callers of the function in the kernel tree at the same time. Cc: "Rafael J. Wysocki" <rafael@kernel.org> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20230313181843.1207845-4-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
Ross Zwisler
|
27d7fdf06f |
bpf: use canonical ftrace path
The canonical location for the tracefs filesystem is at /sys/kernel/tracing. But, from Documentation/trace/ftrace.rst: Before 4.1, all ftrace tracing control files were within the debugfs file system, which is typically located at /sys/kernel/debug/tracing. For backward compatibility, when mounting the debugfs file system, the tracefs file system will be automatically mounted at: /sys/kernel/debug/tracing Many comments and samples in the bpf code still refer to this older debugfs path, so let's update them to avoid confusion. There are a few spots where the bpf code explicitly checks both tracefs and debugfs (tools/bpf/bpftool/tracelog.c and tools/lib/api/fs/fs.c) and I've left those alone so that the tools can continue to work with both paths. Signed-off-by: Ross Zwisler <zwisler@google.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/20230313205628.1058720-2-zwisler@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
|
Linus Torvalds
|
a8356cdb5b |
LoongArch changes for v6.3
1, Make -mstrict-align configurable; 2, Add kernel relocation and KASLR support; 3, Add single kernel image implementation for kdump; 4, Add hardware breakpoints/watchpoints support; 5, Add kprobes/kretprobes/kprobes_on_ftrace support; 6, Add LoongArch support for some selftests. -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEzOlt8mkP+tbeiYy5AoYrw/LiJnoFAmP+9H0WHGNoZW5odWFj YWlAa2VybmVsLm9yZwAKCRAChivD8uImerz+D/98MjkLXM4qtgfAxuBKpVdEVA4U bzO19UlpqWlwTJbwrhf0GYsRrAis37PTVJG4eNORJairJ/oTkMtEEBPhwq0D9Whc URDEh+VrjzFztLsu2OlvzOA9gE7lpg+xAx2LKflP7ixlOELOWeercDLW3octp5/J CJDE8wPaw9tJrMHFWuiVybs03yZmY3YFV55JdWL9hY8Ryy4DY5997mruOfzjvHpl EfDgQM2zCn2JSQwaD+Kl3MHxHyRx07Tj2wnZAh9ptaGeptK/yplc7nqRwhe7BevS QwClhJNPICcOi+evZ7cDUY0PTL4evpw2KRnF1N4zw+58RhZECjVrCEJNdf6L1scj muptQngWKrE/TJvn4way3cJr44stSCtT71elPhn629S23my/CauMmFqCqKpYOPOf pxwzzCaqDcaZKwMu96qBkZS76tIrhoNeNFntj+C9RS+8ezY3+o144S3vF1A6A9Zb M4gwa2NiQuLqnCUwKK6dZkLQVX2NMIMViUkYNKdUStxNWx/K7fFmXcl0ycAFpGYp 8Q95LLH34jUrpSgqMSCmcylsPvNiN1QnuXFnw8Tu+zDthp5dOzio60tORLPM1ZUq gobPeGjeTQInq4eMCf2B5HH8fOMVtJyj6H4K9G1M6HUMg64UtcBp6BvEbwPxTxNN sIOFUjDfDnBiIXWF4w== =SzL5 -----END PGP SIGNATURE----- Merge tag 'loongarch-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson Pull LoongArch updates from Huacai Chen: - Make -mstrict-align configurable - Add kernel relocation and KASLR support - Add single kernel image implementation for kdump - Add hardware breakpoints/watchpoints support - Add kprobes/kretprobes/kprobes_on_ftrace support - Add LoongArch support for some selftests. * tag 'loongarch-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (23 commits) selftests/ftrace: Add LoongArch kprobe args string tests support selftests/seccomp: Add LoongArch selftesting support tools: Add LoongArch build infrastructure samples/kprobes: Add LoongArch support LoongArch: Mark some assembler symbols as non-kprobe-able LoongArch: Add kprobes on ftrace support LoongArch: Add kretprobes support LoongArch: Add kprobes support LoongArch: Simulate branch and PC* instructions LoongArch: ptrace: Add hardware single step support LoongArch: ptrace: Add function argument access API LoongArch: ptrace: Expose hardware breakpoints to debuggers LoongArch: Add hardware breakpoints/watchpoints support LoongArch: kdump: Add crashkernel=YM handling LoongArch: kdump: Add single kernel image implementation LoongArch: Add support for kernel address space layout randomization (KASLR) LoongArch: Add support for kernel relocation LoongArch: Add la_abs macro implementation LoongArch: Add JUMP_VIRT_ADDR macro implementation to avoid using la.abs LoongArch: Use la.pcrel instead of la.abs when it's trivially possible ... |
||
|
Linus Torvalds
|
cac85e4616 |
VFIO updates for v6.3-rc1
- Remove redundant resource check in vfio-platform. (Angus Chen)
- Use GFP_KERNEL_ACCOUNT for persistent userspace allocations, allowing
removal of arbitrary kernel limits in favor of cgroup control.
(Yishai Hadas)
- mdev tidy-ups, including removing the module-only build restriction
for sample drivers, Kconfig changes to select mdev support,
documentation movement to keep sample driver usage instructions with
sample drivers rather than with API docs, remove references to
out-of-tree drivers in docs. (Christoph Hellwig)
- Fix collateral breakages from mdev Kconfig changes. (Arnd Bergmann)
- Make mlx5 migration support match device support, improve source
and target flows to improve pre-copy support and reduce downtime.
(Yishai Hadas)
- Convert additional mdev sysfs case to use sysfs_emit(). (Bo Liu)
- Resolve copy-paste error in mdev mbochs sample driver Kconfig.
(Ye Xingchen)
- Avoid propagating missing reset error in vfio-platform if reset
requirement is relaxed by module option. (Tomasz Duszynski)
- Range size fixes in mlx5 variant driver for missed last byte and
stricter range calculation. (Yishai Hadas)
- Fixes to suspended vaddr support and locked_vm accounting, excluding
mdev configurations from the former due to potential to indefinitely
block kernel threads, fix underflow and restore locked_vm on new mm.
(Steve Sistare)
- Update outdated vfio documentation due to new IOMMUFD interfaces in
recent kernels. (Yi Liu)
- Resolve deadlock between group_lock and kvm_lock, finally.
(Matthew Rosato)
- Fix NULL pointer in group initialization error path with IOMMUFD.
(Yan Zhao)
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Merge tag 'vfio-v6.3-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Remove redundant resource check in vfio-platform (Angus Chen)
- Use GFP_KERNEL_ACCOUNT for persistent userspace allocations, allowing
removal of arbitrary kernel limits in favor of cgroup control (Yishai
Hadas)
- mdev tidy-ups, including removing the module-only build restriction
for sample drivers, Kconfig changes to select mdev support,
documentation movement to keep sample driver usage instructions with
sample drivers rather than with API docs, remove references to
out-of-tree drivers in docs (Christoph Hellwig)
- Fix collateral breakages from mdev Kconfig changes (Arnd Bergmann)
- Make mlx5 migration support match device support, improve source and
target flows to improve pre-copy support and reduce downtime (Yishai
Hadas)
- Convert additional mdev sysfs case to use sysfs_emit() (Bo Liu)
- Resolve copy-paste error in mdev mbochs sample driver Kconfig (Ye
Xingchen)
- Avoid propagating missing reset error in vfio-platform if reset
requirement is relaxed by module option (Tomasz Duszynski)
- Range size fixes in mlx5 variant driver for missed last byte and
stricter range calculation (Yishai Hadas)
- Fixes to suspended vaddr support and locked_vm accounting, excluding
mdev configurations from the former due to potential to indefinitely
block kernel threads, fix underflow and restore locked_vm on new mm
(Steve Sistare)
- Update outdated vfio documentation due to new IOMMUFD interfaces in
recent kernels (Yi Liu)
- Resolve deadlock between group_lock and kvm_lock, finally (Matthew
Rosato)
- Fix NULL pointer in group initialization error path with IOMMUFD (Yan
Zhao)
* tag 'vfio-v6.3-rc1' of https://github.com/awilliam/linux-vfio: (32 commits)
vfio: Fix NULL pointer dereference caused by uninitialized group->iommufd
docs: vfio: Update vfio.rst per latest interfaces
vfio: Update the kdoc for vfio_device_ops
vfio/mlx5: Fix range size calculation upon tracker creation
vfio: no need to pass kvm pointer during device open
vfio: fix deadlock between group lock and kvm lock
vfio: revert "iommu driver notify callback"
vfio/type1: revert "implement notify callback"
vfio/type1: revert "block on invalid vaddr"
vfio/type1: restore locked_vm
vfio/type1: track locked_vm per dma
vfio/type1: prevent underflow of locked_vm via exec()
vfio/type1: exclude mdevs from VFIO_UPDATE_VADDR
vfio: platform: ignore missing reset if disabled at module init
vfio/mlx5: Improve the target side flow to reduce downtime
vfio/mlx5: Improve the source side flow upon pre_copy
vfio/mlx5: Check whether VF is migratable
samples: fix the prompt about SAMPLE_VFIO_MDEV_MBOCHS
vfio/mdev: Use sysfs_emit() to instead of sprintf()
vfio-mdev: add back CONFIG_VFIO dependency
...
|
||
Tiezhu Yang
|
a6484baa3b |
samples/kprobes: Add LoongArch support
Add LoongArch specific info in handler_pre() and handler_post(). Tested-by: Jeff Xie <xiehuan09@gmail.com> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
||
|
Linus Torvalds
|
a93e884edf |
Driver core changes for 6.3-rc1
Here is the large set of driver core changes for 6.3-rc1.
There's a lot of changes this development cycle, most of the work falls
into two different categories:
- fw_devlink fixes and updates. This has gone through numerous review
cycles and lots of review and testing by lots of different devices.
Hopefully all should be good now, and Saravana will be keeping a
watch for any potential regression on odd embedded systems.
- driver core changes to work to make struct bus_type able to be moved
into read-only memory (i.e. const) The recent work with Rust has
pointed out a number of areas in the driver core where we are
passing around and working with structures that really do not have
to be dynamic at all, and they should be able to be read-only making
things safer overall. This is the contuation of that work (started
last release with kobject changes) in moving struct bus_type to be
constant. We didn't quite make it for this release, but the
remaining patches will be finished up for the release after this
one, but the groundwork has been laid for this effort.
Other than that we have in here:
- debugfs memory leak fixes in some subsystems
- error path cleanups and fixes for some never-able-to-be-hit
codepaths.
- cacheinfo rework and fixes
- Other tiny fixes, full details are in the shortlog
All of these have been in linux-next for a while with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the large set of driver core changes for 6.3-rc1.
There's a lot of changes this development cycle, most of the work
falls into two different categories:
- fw_devlink fixes and updates. This has gone through numerous review
cycles and lots of review and testing by lots of different devices.
Hopefully all should be good now, and Saravana will be keeping a
watch for any potential regression on odd embedded systems.
- driver core changes to work to make struct bus_type able to be
moved into read-only memory (i.e. const) The recent work with Rust
has pointed out a number of areas in the driver core where we are
passing around and working with structures that really do not have
to be dynamic at all, and they should be able to be read-only
making things safer overall. This is the contuation of that work
(started last release with kobject changes) in moving struct
bus_type to be constant. We didn't quite make it for this release,
but the remaining patches will be finished up for the release after
this one, but the groundwork has been laid for this effort.
Other than that we have in here:
- debugfs memory leak fixes in some subsystems
- error path cleanups and fixes for some never-able-to-be-hit
codepaths.
- cacheinfo rework and fixes
- Other tiny fixes, full details are in the shortlog
All of these have been in linux-next for a while with no reported
problems"
[ Geert Uytterhoeven points out that that last sentence isn't true, and
that there's a pending report that has a fix that is queued up - Linus ]
* tag 'driver-core-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (124 commits)
debugfs: drop inline constant formatting for ERR_PTR(-ERROR)
OPP: fix error checking in opp_migrate_dentry()
debugfs: update comment of debugfs_rename()
i3c: fix device.h kernel-doc warnings
dma-mapping: no need to pass a bus_type into get_arch_dma_ops()
driver core: class: move EXPORT_SYMBOL_GPL() lines to the correct place
Revert "driver core: add error handling for devtmpfs_create_node()"
Revert "devtmpfs: add debug info to handle()"
Revert "devtmpfs: remove return value of devtmpfs_delete_node()"
driver core: cpu: don't hand-override the uevent bus_type callback.
devtmpfs: remove return value of devtmpfs_delete_node()
devtmpfs: add debug info to handle()
driver core: add error handling for devtmpfs_create_node()
driver core: bus: update my copyright notice
driver core: bus: add bus_get_dev_root() function
driver core: bus: constify bus_unregister()
driver core: bus: constify some internal functions
driver core: bus: constify bus_get_kset()
driver core: bus: constify bus_register/unregister_notifier()
driver core: remove private pointer from struct bus_type
...
|
||
|
Linus Torvalds
|
b72b5fecc1 |
tracing updates for 6.3:
- Add function names as a way to filter function addresses - Add sample module to test ftrace ops and dynamic trampolines - Allow stack traces to be passed from beginning event to end event for synthetic events. This will allow seeing the stack trace of when a task is scheduled out and recorded when it gets scheduled back in. - Add trace event helper __get_buf() to use as a temporary buffer when printing out trace event output. - Add kernel command line to create trace instances on boot up. - Add enabling of events to instances created at boot up. - Add trace_array_puts() to write into instances. - Allow boot instances to take a snapshot at the end of boot up. - Allow live patch modules to include trace events - Minor fixes and clean ups -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCY/PaaBQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qh5iAPoD0LKZzD33rhO5Ec4hoexE0DkqycP3 dvmOMbCBL8GkxwEA+d2gLz/EquSFm166hc4D79Sn3geCqvkwmy8vQWVjIQc= =M82D -----END PGP SIGNATURE----- Merge tag 'trace-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing updates from Steven Rostedt: - Add function names as a way to filter function addresses - Add sample module to test ftrace ops and dynamic trampolines - Allow stack traces to be passed from beginning event to end event for synthetic events. This will allow seeing the stack trace of when a task is scheduled out and recorded when it gets scheduled back in. - Add trace event helper __get_buf() to use as a temporary buffer when printing out trace event output. - Add kernel command line to create trace instances on boot up. - Add enabling of events to instances created at boot up. - Add trace_array_puts() to write into instances. - Allow boot instances to take a snapshot at the end of boot up. - Allow live patch modules to include trace events - Minor fixes and clean ups * tag 'trace-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (31 commits) tracing: Remove unnecessary NULL assignment tracepoint: Allow livepatch module add trace event tracing: Always use canonical ftrace path tracing/histogram: Fix stacktrace histogram Documententation tracing/histogram: Fix stacktrace key tracing/histogram: Fix a few problems with stacktrace variable printing tracing: Add BUILD_BUG() to make sure stacktrace fits in strings tracing/histogram: Don't use strlen to find length of stacktrace variables tracing: Allow boot instances to have snapshot buffers tracing: Add trace_array_puts() to write into instance tracing: Add enabling of events to boot instances tracing: Add creation of instances at boot command line tracing: Fix trace_event_raw_event_synth() if else statement samples: ftrace: Make some global variables static ftrace: sample: avoid open-coded 64-bit division samples: ftrace: Include the nospec-branch.h only for x86 tracing: Acquire buffer from temparary trace sequence tracing/histogram: Wrap remaining shell snippets in code blocks tracing/osnoise: No need for schedule_hrtimeout range bpf/tracing: Use stage6 of tracing to not duplicate macros ... |
||
|
Linus Torvalds
|
a5c95ca18a |
drm next for 6.3-rc1
Removals:
- remove legacy dri1 drivers -
- i810, mga, r128, savage, sis, tdfx, via
New driver:
- intel VPU accelerator driver
- habanalabs comes via drm tree now
drm/core:
- use drm_dbg_ helpers in several places
- Document defaults for CRTC backgrounds
- Document use of drm_minor
edid:
- improve mode parsing and refactoring
connector:
- support analog TV mode property
media:
- add some common formats
udmabuf:
- add vmap/vunmap methods
fourcc:
- add XRGB1555 and RGB565 formats
- document open source user waiver
firmware:
- fix color-format selection for system framebuffer
format-helper:
- Add conversion from XRGB8888 to various sysfb formats
- Make XRGB8888 the only driver-emulated legacy format
- Add conversion from XRGB8888 to XBGR8888 and ABGR8888
fb-helper:
- fix preferred depth and bpp values across drivers
- Avoid blank consoles from selecting an incorrect color format
probe-helper:
- Enable/disable HPD on connectors
scheduler:
- Fix lockup in drm_sched_entity_kill()
- Deprecate drm_sched_resubmit_jobs()
bridge:
- remove unused functions
- implement i2c probe_new in various drivers
- ite-it6505: Locking fixes, Cache EDID data
- ite-it66121: Support IT6610 chip
- lontium-tl9611: Fix HDMI on DragonBoard 845c
- parade-ps8640: Use atomic bridge functions
- Support i.MX93 LDB plus DT bindings
debugfs:
- add per device helpers and convert drivers
displayport:
- mst fixes
- add DP adaptive sync DPCD definitions
fbdev:
- always pick 32bpp as default
- remove some unused code
simpledrm:
- support system memory framebuffers
panel:
- add orientation quirks for Lenovo Yoga Tab 3 X90F and DynaBook K50
- Use ktime_get_boottime() to measure power-down delay
- Fix auto-suspend delay
- Visionox VTDR6130 AMOLED DSI
- Support Himax HX8394
- Convert many drivers to common generic DSI write-sequence helper
- AUO A030JTN01
ttm:
- drop bo wait wrapper
- fix MIPS build
habanalabs:
- moved driver to accel subsystem
- gaudi2 decoder error improvement
- more trace events
- Gaudi2 abrupt reset by firmware support
- add uAPI to flush memory transactions
- add uAPI to pass through userspace reqs to fw
- remove dma-buf export by handle
amdgpu:
- add new INFO queries for peak and min sclk/mclk for profile modes
- Add PCIe info to the INFO IOCTL
- secure display support for multiple displays
- DML optimizations
- DCN 3.2 updates
- PSR updates
- DP 2.1 updates
- SR-IOV RAS updates
- VCN RAS support
- SMU 13.x updates
- Switch 1 element arrays to flexible arrays
- Add RAS support for DF 4.3
- Stack size improvements
- S0ix rework
- Allow 0 as a vram limit on APUs
- Handle profiling modes for SMU13.x
- Fix possible segfault in failure case
- Rework FW requests to happen in early_init for all IPs so
that we don't lose the sbios console if FW is missing
- Fix power reporting on certain firmwares for CZN/RN
- Allow S0ix without BIOS support
- Enable freesync over PCon
- Re-enable the AGP aperture on GMC 11.x
amdkfd:
- Error handling fixes
- PASID fixes
- Fix for cleared VRAM BOs
- Fix cleanup if GPUVM creation fails
- Memory accounting fix
- Use resource_size rather than open codeing it
- GC11 mGPU fix
radeon:
- Switch 1 element arrays to flexible arrays
- Fix memory leak on shutdown
- move to new logging
i915:
- Meteorlake display/OA/GSC fw/workarounds enabling
- DP MST DSC support
- Gamma/degamma readout support for the state checker
- Enable SDP split support for DP 2.0
- Add probe blocking support to i915.force_probe parameter
- Enable Xe HP 4tile support
- Avoid display direct calls to uncore
- Fix HuC delayed load memory leaks
- Add DG2 workarounds Wa_18018764978 and Wa_18019271663
- Improve suspend / resume times with VT-d scanout workaround active
- Fix DG2 visual corruption on small BAR systems by not forgetting to copy CCS aux state
- Fix TLB invalidation for Gen12.50 video and compute engines
- Enable HF-EEODB by switching HDMI, DP and LVDS to use struct drm_edid
- Start using unversioned DMC firmware paths for new platforms
- ELD refactor: Stop using hardware buffer, precompute ELD
- lots of display code refactoring
nouveau:
- drop legacy ioctl support
- replace 0-sized array
msm:
- dpu/dsi/mdss: Support for SM8350, SM8450 SM8550 and SC8280XP platform
- Added bindings for SM8150
- dpu: Partial support for DSC on SM8150 and SM8250
- dpu: Fixed color transformation matrix being lost on suspend/resume
- dp: Support SDM845 and SC8280XP platforms
- dp: Support for limiting DP link rate via DT property
- dsi: Validate display modes according to the DSI OPP table
- dsi: DSI PHY support for the SM6375 platform
- Add MSM_SUBMIT_BO_NO_IMPLICI
- a2xx: Support to load legacy firmware
- a6xx: GPU devcore dump updates for a650/a660
- GPU devfreq tuning and fixes
- Turn 8960 HDMI PHY into clock provider,
- Make 8960 HDMI PHY use PXO clock from DT
etnaviv:
- experimental versilicon NPU support
- report GPU load via fdinfo format
- MMU fault message improvements
tegra:
- rework syncpoint interrupt
mediatek:
- DSI timing fix
- fix config deps
ast:
- various fixes
exynos:
- restore bridge chain order fixes
gud:
- convert to shadow plane buffers
- perform flushing synchronously during atomic update
- Use new debugfs helpers
arm/hdlcd:
- Use new debugfs helper
ili9486:
- Support 16-bit pixel data
imx:
- Split off IPUv3 driver
mipi-dbi:
- convert to DRM shadow-plane helpers
- rsp driver changes
- Support separate I/O-voltage supply
mxsfb:
- Depend on ARCH_MXS or ARCH_MXC
sun4i:
- convert to new TV mode property
vc4:
- convert to new TV mode property
- kunit tests
- Support RGB565 and RGB666 formats
- convert dsi driver to bridge
- Various HVS an CRTC fixes
v3d:
- Do not opencode drm_gem_object_lookup()
virtio:
- improve tracing
vkms:
- support small cursors in IGT tests
- Fix SEGFAULT from incorrect GEM-buffer mapping
rcar-du:
- fixes and improvements
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Merge tag 'drm-next-2023-02-23' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
"There are a bunch of changes all over in the usual places.
Highlights:
- habanalabs moves from misc to accel
- first accel driver for Intel VPU (Versatile Processing Unit)
inference engine
- dropped all the ancient legacy DRI1 drivers. I think it's been at
least 10 years since anyone has heard about these.
- Intel DG2 updates and prelim Meteorlake enablement
- etnaviv adds support for Versilicon NPU device (a GPU like engine
with inference accelerators)
Detailed summary:
Removals:
- remove legacy dri1 drivers: i810, mga, r128, savage, sis, tdfx, via
New driver:
- intel VPU accelerator driver
- habanalabs comes via drm tree now
drm/core:
- use drm_dbg_ helpers in several places
- Document defaults for CRTC backgrounds
- Document use of drm_minor
edid:
- improve mode parsing and refactoring
connector:
- support analog TV mode property
media:
- add some common formats
udmabuf:
- add vmap/vunmap methods
fourcc:
- add XRGB1555 and RGB565 formats
- document open source user waiver
firmware:
- fix color-format selection for system framebuffer
format-helper:
- Add conversion from XRGB8888 to various sysfb formats
- Make XRGB8888 the only driver-emulated legacy format
- Add conversion from XRGB8888 to XBGR8888 and ABGR8888
fb-helper:
- fix preferred depth and bpp values across drivers
- Avoid blank consoles from selecting an incorrect color format
probe-helper:
- Enable/disable HPD on connectors
scheduler:
- Fix lockup in drm_sched_entity_kill()
- Deprecate drm_sched_resubmit_jobs()
bridge:
- remove unused functions
- implement i2c probe_new in various drivers
- ite-it6505: Locking fixes, Cache EDID data
- ite-it66121: Support IT6610 chip
- lontium-tl9611: Fix HDMI on DragonBoard 845c
- parade-ps8640: Use atomic bridge functions
- Support i.MX93 LDB plus DT bindings
debugfs:
- add per device helpers and convert drivers
displayport:
- mst fixes
- add DP adaptive sync DPCD definitions
fbdev:
- always pick 32bpp as default
- remove some unused code
simpledrm:
- support system memory framebuffers
panel:
- add orientation quirks for Lenovo Yoga Tab 3 X90F and DynaBook K50
- Use ktime_get_boottime() to measure power-down delay
- Fix auto-suspend delay
- Visionox VTDR6130 AMOLED DSI
- Support Himax HX8394
- Convert many drivers to common generic DSI write-sequence helper
- AUO A030JTN01
ttm:
- drop bo wait wrapper
- fix MIPS build
habanalabs:
- moved driver to accel subsystem
- gaudi2 decoder error improvement
- more trace events
- Gaudi2 abrupt reset by firmware support
- add uAPI to flush memory transactions
- add uAPI to pass through userspace reqs to fw
- remove dma-buf export by handle
amdgpu:
- add new INFO queries for peak and min sclk/mclk for profile modes
- Add PCIe info to the INFO IOCTL
- secure display support for multiple displays
- DML optimizations
- DCN 3.2 updates
- PSR updates
- DP 2.1 updates
- SR-IOV RAS updates
- VCN RAS support
- SMU 13.x updates
- Switch 1 element arrays to flexible arrays
- Add RAS support for DF 4.3
- Stack size improvements
- S0ix rework
- Allow 0 as a vram limit on APUs
- Handle profiling modes for SMU13.x
- Fix possible segfault in failure case
- Rework FW requests to happen in early_init for all IPs so that we
don't lose the sbios console if FW is missing
- Fix power reporting on certain firmwares for CZN/RN
- Allow S0ix without BIOS support
- Enable freesync over PCon
- Re-enable the AGP aperture on GMC 11.x
amdkfd:
- Error handling fixes
- PASID fixes
- Fix for cleared VRAM BOs
- Fix cleanup if GPUVM creation fails
- Memory accounting fix
- Use resource_size rather than open codeing it
- GC11 mGPU fix
radeon:
- Switch 1 element arrays to flexible arrays
- Fix memory leak on shutdown
- move to new logging
i915:
- Meteorlake display/OA/GSC fw/workarounds enabling
- DP MST DSC support
- Gamma/degamma readout support for the state checker
- Enable SDP split support for DP 2.0
- Add probe blocking support to i915.force_probe parameter
- Enable Xe HP 4tile support
- Avoid display direct calls to uncore
- Fix HuC delayed load memory leaks
- Add DG2 workarounds Wa_18018764978 and Wa_18019271663
- Improve suspend / resume times with VT-d scanout workaround active
- Fix DG2 visual corruption on small BAR systems by not forgetting to
copy CCS aux state
- Fix TLB invalidation for Gen12.50 video and compute engines
- Enable HF-EEODB by switching HDMI, DP and LVDS to use struct
drm_edid
- Start using unversioned DMC firmware paths for new platforms
- ELD refactor: Stop using hardware buffer, precompute ELD
- lots of display code refactoring
nouveau:
- drop legacy ioctl support
- replace 0-sized array
msm:
- dpu/dsi/mdss: Support for SM8350, SM8450 SM8550 and SC8280XP platform
- Added bindings for SM8150
- dpu: Partial support for DSC on SM8150 and SM8250
- dpu: Fixed color transformation matrix being lost on suspend/resume
- dp: Support SDM845 and SC8280XP platforms
- dp: Support for limiting DP link rate via DT property
- dsi: Validate display modes according to the DSI OPP table
- dsi: DSI PHY support for the SM6375 platform
- Add MSM_SUBMIT_BO_NO_IMPLICI
- a2xx: Support to load legacy firmware
- a6xx: GPU devcore dump updates for a650/a660
- GPU devfreq tuning and fixes
- Turn 8960 HDMI PHY into clock provider,
- Make 8960 HDMI PHY use PXO clock from DT
etnaviv:
- experimental versilicon NPU support
- report GPU load via fdinfo format
- MMU fault message improvements
tegra:
- rework syncpoint interrupt
mediatek:
- DSI timing fix
- fix config deps
ast:
- various fixes
exynos:
- restore bridge chain order fixes
gud:
- convert to shadow plane buffers
- perform flushing synchronously during atomic update
- Use new debugfs helpers
arm/hdlcd:
- Use new debugfs helper
ili9486:
- Support 16-bit pixel data
imx:
- Split off IPUv3 driver
mipi-dbi:
- convert to DRM shadow-plane helpers
- rsp driver changes
- Support separate I/O-voltage supply
mxsfb:
- Depend on ARCH_MXS or ARCH_MXC
sun4i:
- convert to new TV mode property
vc4:
- convert to new TV mode property
- kunit tests
- Support RGB565 and RGB666 formats
- convert dsi driver to bridge
- Various HVS an CRTC fixes
v3d:
- Do not opencode drm_gem_object_lookup()
virtio:
- improve tracing
vkms:
- support small cursors in IGT tests
- Fix SEGFAULT from incorrect GEM-buffer mapping
rcar-du:
- fixes and improvements"
* tag 'drm-next-2023-02-23' of git://anongit.freedesktop.org/drm/drm: (1455 commits)
msm/fbdev: fix unused variable warning with clang.
drm/fb-helper: Remove drm_fb_helper_unprepare() from drm_fb_helper_fini()
dma-buf: make kobj_type structure constant
drm/shmem-helper: Fix locking for drm_gem_shmem_get_pages_sgt()
drm/amd/display: disable SubVP + DRR to prevent underflow
drm/amd/display: Fail atomic_check early on normalize_zpos error
drm/amd/pm: avoid unaligned access warnings
drm/amd/display: avoid unaligned access warnings
drm/amd/display: Remove duplicate/repeating expressions
drm/amd/display: Remove duplicate/repeating expression
drm/amd/display: Make variables declaration inside ifdef guard
drm/amd/display: Fix excess arguments on kernel-doc
drm/amd/display: Add previously missing includes
drm/amd/amdgpu: Add function prototypes to headers
drm/amd/display: Add function prototypes to headers
drm/amd/display: Turn global functions into static
drm/amd/display: remove unused _calculate_degamma_curve function
drm/amd/display: remove unused func declaration from resource headers
drm/amd/display: unset initial value for tf since it's never used
drm/amd/display: camel case cleanup in color_gamma file
...
|
||
|
Linus Torvalds
|
6c71297eaf |
for-linus-2023022201
-----BEGIN PGP SIGNATURE----- iQJSBAABCAA8FiEEoEVH9lhNrxiMPSyI7MXwXhnZSjYFAmP15aoeHGJlbmphbWlu LnRpc3NvaXJlc0ByZWRoYXQuY29tAAoJEOzF8F4Z2Uo2nwkP/Rcr5lZYKQ59ezoJ PwHx/0wO1Qpgd4fRwD5Mvxynmfoq20A6FZFpmtjUjNcP3dm3X2UJtXE3HkDECCFP 5daqTFOswFiPFtcMlIl+SHxNgIIlTodbqx9MAFj/7n5aihB54JpTHWsgbENj35Y1 RLHYDi0+wj69y9ctOkqKGWHp8Uf220RWrD7zZf7AJAc5cwot1kM00RSy9dSAJ0vB riZdCQqYwXbf4I1uFzthS6AdIIWcpmpZyYFnsF7F2xQADqCNXr1MTmG0uC+Ey/J/ 0PZXjkyMO/pNwxarRiXmBKnsJJlJajxRXGtpgKYZu8AnIaXuNu/z987Y1pZ/kYis OQSKib2bGWzT2MycqiuVVrOChIMvqmk2aPRvg73jojpSySYTKn1Jp/XHyXS8qkkQ HJ/u6VPpe42GdfOGM7V9ig+80z/5D5u1XJECoPpxyKHWQ8S7ZlczQjVT+a8nUuBV hPTiqAYE9NT6SQJ0b5z2uhBdGRzvAbCZzDCgvjE87zsRmLzFk/fzMdMPZrlADKMJ 3qu7ey2GYOBNfnDcJmPu5HmK/A9BaPZiZAMakqjGpezZbe+LGBNskXTRwPpNC+Dh 11pna0ns+vlxeT7nonO0JsYvsKWy0pPcBvhyUEHWsmHgyagRLIsvg01ezB/Ivu0O xYj3UPVEGTiwHBt9xnaZcIjRSPSZ =cBvC -----END PGP SIGNATURE----- Merge tag 'for-linus-2023022201' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid Pull HID updates from Benjamin Tissoires: - HID-BPF infrastructure: this allows to start using HID-BPF. Note that the mechanism to ship HID-BPF program through the kernel tree is still not implemented yet (but is planned). This should be a no-op for 99% of users. Also we are gaining kselftests for the HID tree (Benjamin Tissoires) - Some UAF fixes in workers when using uhid (Pietro Borrello & Benjamin Tissoires) - Constify hid_ll_driver (Thomas Weißschuh) - Allow more custom IIO sensors through HID (Philipp Jungkamp) - Logitech HID++ fixes for scroll wheel, protocol and debug (Bastien Nocera) - Some new device support: Steam Deck (Vicki Pfau), UClogic (José Expósito), Logitech G923 Xbox Edition steering wheel (Walt Holman), EVision keyboards (Philippe Valembois) - other assorted code cleanups and fixes * tag 'for-linus-2023022201' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (99 commits) HID: mcp-2221: prevent UAF in delayed work hid: bigben_probe(): validate report count HID: asus: use spinlock to safely schedule workers HID: asus: use spinlock to protect concurrent accesses HID: bigben: use spinlock to safely schedule workers HID: bigben_worker() remove unneeded check on report_field HID: bigben: use spinlock to protect concurrent accesses HID: logitech-hidpp: Add myself to authors HID: logitech-hidpp: Retry commands when device is busy HID: logitech-hidpp: Add more debug statements HID: Add support for Logitech G923 Xbox Edition steering wheel HID: logitech-hidpp: Add Signature M650 HID: logitech-hidpp: Remove HIDPP_QUIRK_NO_HIDINPUT quirk HID: logitech-hidpp: Don't restart communication if not necessary HID: logitech-hidpp: Add constants for HID++ 2.0 error codes Revert "HID: logitech-hidpp: add a module parameter to keep firmware gestures" HID: logitech-hidpp: Hard-code HID++ 1.0 fast scroll support HID: i2c-hid: goodix: Add mainboard-vddio-supply dt-bindings: HID: i2c-hid: goodix: Add mainboard-vddio-supply HID: i2c-hid: goodix: Stop tying the reset line to the regulator ... |
||
Benjamin Tissoires
|
904e28c6de |
Merge branch 'for-6.3/hid-bpf' into for-linus
Initial support of HID-BPF (Benjamin Tissoires) The history is a little long for this series, as it was intended to be sent for v6.2. However some last minute issues forced us to postpone it to v6.3. Conflicts: * drivers/hid/i2c-hid/Kconfig: commit |
||
Ross Zwisler
|
2455f0e124 |
tracing: Always use canonical ftrace path
The canonical location for the tracefs filesystem is at /sys/kernel/tracing. But, from Documentation/trace/ftrace.rst: Before 4.1, all ftrace tracing control files were within the debugfs file system, which is typically located at /sys/kernel/debug/tracing. For backward compatibility, when mounting the debugfs file system, the tracefs file system will be automatically mounted at: /sys/kernel/debug/tracing Many comments and Kconfig help messages in the tracing code still refer to this older debugfs path, so let's update them to avoid confusion. Link: https://lore.kernel.org/linux-trace-kernel/20230215223350.2658616-2-zwisler@google.com Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com> Signed-off-by: Ross Zwisler <zwisler@google.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
Ilya Leoshkevich
|
c0ca277bb8 |
samples/bpf: Use bpf_{btf,link,map,prog}_get_info_by_fd()
Use the new type-safe wrappers around bpf_obj_get_info_by_fd(). Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20230214231221.249277-5-iii@linux.ibm.com |
||
|
Jakub Kicinski
|
de42873367 |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCY+bZrwAKCRDbK58LschI gzi4AP4+TYo0jnSwwkrOoN9l4f5VO9X8osmj3CXfHBv7BGWVxAD/WnvA3TDZyaUd agIZTkRs6BHF9He8oROypARZxTeMLwM= =nO1C -----END PGP SIGNATURE----- Daniel Borkmann says: ==================== pull-request: bpf-next 2023-02-11 We've added 96 non-merge commits during the last 14 day(s) which contain a total of 152 files changed, 4884 insertions(+), 962 deletions(-). There is a minor conflict in drivers/net/ethernet/intel/ice/ice_main.c between commit |
||
|
Rong Tao
|
06744f2469 |
samples/bpf: Add openat2() enter/exit tracepoint to syscall_tp sample
Commit fe3300897cbf("samples: bpf: fix syscall_tp due to unused syscall")
added openat() syscall tracepoints. This patch adds support for
openat2() as well.
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/tencent_9381CB1A158ED7ADD12C4406034E21A3AC07@qq.com
|
||
Thomas Weißschuh
|
862f6a84d1 |
samples/kobject: make kobj_type structure constant
Since commit
|
||
Tom Rix
|
aef70ebd62 |
samples: ftrace: Make some global variables static
smatch reports this representative issue samples/ftrace/ftrace-ops.c:15:14: warning: symbol 'nr_function_calls' was not declared. Should it be static? The nr_functions_calls and several other global variables are only used in ftrace-ops.c, so they should be static. Remove the instances of initializing static int to 0. Link: https://lore.kernel.org/linux-trace-kernel/20230130193708.1378108-1-trix@redhat.com Signed-off-by: Tom Rix <trix@redhat.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
Arnd Bergmann
|
f94fe7048a |
ftrace: sample: avoid open-coded 64-bit division
Calculating the average period requires a 64-bit division that leads
to a link failure on 32-bit architectures:
x86_64-linux-ld: samples/ftrace/ftrace-ops.o: in function `ftrace_ops_sample_init':
ftrace-ops.c:(.init.text+0x23b): undefined reference to `__udivdi3'
Use the div_u64() helper to do this instead. Since this is an init function that
is not called frequently, the runtime overhead is going to be acceptable.
Link: https://lore.kernel.org/linux-trace-kernel/20230130130246.247537-1-arnd@kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Fixes:
|
||
Song Shuai
|
01678fbce3 |
samples: ftrace: Include the nospec-branch.h only for x86
When other architectures without the nospec functionality write their
direct-call functions of samples/ftrace/*.c, the including of
asm/nospec-branch.h must be taken care to fix the no header file found
error in building process.
This commit (
|
||
|
Jakub Kicinski
|
82b4a9412b |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
net/core/gro.c |
||
Daniel Vetter
|
aebd8f0c6f |
Linux 6.2-rc6
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmPW7E8eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGf7MIAI0JnHN9WvtEukSZ E6j6+cEGWxsvD6q0g3GPolaKOCw7hlv0pWcFJFcUAt0jebspMdxV2oUGJ8RYW7Lg nCcHvEVswGKLAQtQSWw52qotW6fUfMPsNYYB5l31sm1sKH4Cgss0W7l2HxO/1LvG TSeNHX53vNAZ8pVnFYEWCSXC9bzrmU/VALF2EV00cdICmfvjlgkELGXoLKJJWzUp s63fBHYGGURSgwIWOKStoO6HNo0j/F/wcSMx8leY8qDUtVKHj4v24EvSgxUSDBER ch3LiSQ6qf4sw/z7pqruKFthKOrlNmcc0phjiES0xwwGiNhLv0z3rAhc4OM2cgYh SDc/Y/c= =zpaD -----END PGP SIGNATURE----- Merge v6.2-rc6 into drm-next Due to holidays we started -next with more -fixes in-flight than usual, and people have been asking where they are. Backmerge to get things better in sync. Conflicts: - Tiny conflict in drm_fbdev_generic.c between variable rename and missing error handling that got added. - Conflict in drm_fb_helper.c between the added call to vgaswitcheroo in drm_fb_helper_single_fb_probe and a refactor patch that extracted lots of helpers and incidentally removed the dev local variable. Readd it to make things compile. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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ye xingchen
|
e951eaaf83 |
samples: fix the prompt about SAMPLE_VFIO_MDEV_MBOCHS
Change the prompt about SAMPLE_VFIO_MDEV_MBOCHS as 'Build VFIO mbochs example mediated device sample code'. Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn> Link: https://lore.kernel.org/r/202301301013518438986@zte.com.cn Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
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Arnd Bergmann
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de858a05c9 |
vfio-mdev: add back CONFIG_VFIO dependency
CONFIG_VFIO_MDEV cannot be selected when VFIO itself is
disabled, otherwise we get a link failure:
WARNING: unmet direct dependencies detected for VFIO_MDEV
Depends on [n]: VFIO [=n]
Selected by [y]:
- SAMPLE_VFIO_MDEV_MTTY [=y] && SAMPLES [=y]
- SAMPLE_VFIO_MDEV_MDPY [=y] && SAMPLES [=y]
- SAMPLE_VFIO_MDEV_MBOCHS [=y] && SAMPLES [=y]
/home/arnd/cross/arm64/gcc-13.0.1-nolibc/x86_64-linux/bin/x86_64-linux-ld: samples/vfio-mdev/mdpy.o: in function `mdpy_remove':
mdpy.c:(.text+0x1e1): undefined reference to `vfio_unregister_group_dev'
/home/arnd/cross/arm64/gcc-13.0.1-nolibc/x86_64-linux/bin/x86_64-linux-ld: samples/vfio-mdev/mdpy.o: in function `mdpy_probe':
mdpy.c:(.text+0x149e): undefined reference to `_vfio_alloc_device'
Fixes:
|
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Mark Rutland
|
b56c68f705 |
ftrace: Add sample with custom ops
When reworking core ftrace code or architectural ftrace code, it's often necessary to test/analyse/benchmark a number of ftrace_ops configurations. This patch adds a module which can be used to explore some of those configurations. I'm using this to benchmark various options for changing the way trampolines and handling of ftrace_ops work on arm64, and ensuring other architectures aren't adversely affected. For example, in a QEMU+KVM VM running on a 2GHz Xeon E5-2660 workstation, loading the module in various configurations produces: | # insmod ftrace-ops.ko | ftrace_ops: registering: | relevant ops: 1 | tracee: tracee_relevant [ftrace_ops] | tracer: ops_func_nop [ftrace_ops] | irrelevant ops: 0 | tracee: tracee_irrelevant [ftrace_ops] | tracer: ops_func_nop [ftrace_ops] | saving registers: NO | assist recursion: NO | assist RCU: NO | ftrace_ops: Attempted 100000 calls to tracee_relevant [ftrace_ops] in 1681558ns (16ns / call) | # insmod ftrace-ops.ko nr_ops_irrelevant=5 | ftrace_ops: registering: | relevant ops: 1 | tracee: tracee_relevant [ftrace_ops] | tracer: ops_func_nop [ftrace_ops] | irrelevant ops: 5 | tracee: tracee_irrelevant [ftrace_ops] | tracer: ops_func_nop [ftrace_ops] | saving registers: NO | assist recursion: NO | assist RCU: NO | ftrace_ops: Attempted 100000 calls to tracee_relevant [ftrace_ops] in 1693042ns (16ns / call) | # insmod ftrace-ops.ko nr_ops_relevant=2 | ftrace_ops: registering: | relevant ops: 2 | tracee: tracee_relevant [ftrace_ops] | tracer: ops_func_nop [ftrace_ops] | irrelevant ops: 0 | tracee: tracee_irrelevant [ftrace_ops] | tracer: ops_func_nop [ftrace_ops] | saving registers: NO | assist recursion: NO | assist RCU: NO | ftrace_ops: Attempted 100000 calls to tracee_relevant [ftrace_ops] in 11965582ns (119ns / call) | # insmod ftrace-ops.ko save_regs=true | ftrace_ops: registering: | relevant ops: 1 | tracee: tracee_relevant [ftrace_ops] | tracer: ops_func_nop [ftrace_ops] | irrelevant ops: 0 | tracee: tracee_irrelevant [ftrace_ops] | tracer: ops_func_nop [ftrace_ops] | saving registers: YES | assist recursion: NO | assist RCU: NO | ftrace_ops: Attempted 100000 calls to tracee_relevant [ftrace_ops] in 4459624ns (44ns / call) Link: https://lkml.kernel.org/r/20230103124912.2948963-4-mark.rutland@arm.com Cc: Florent Revest <revest@chromium.org> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Daniel Vetter
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b8f55f24bc |
drm-misc-next for $kernel-version:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
* Cleanup unneeded include statements wrt <linux/fb.h>, <drm/drm_fb_helper.h>
and <drm/drm_crtc_helper.h>
* Remove unused helper DRM_DEBUG_KMS_RATELIMITED()
* fbdev: Remove obsolete aperture field from struct fb_device, plus
driver cleanups; Remove unused flag FBINFO_MISC_FIRMWARE
* MIPI-DSI: Fix brightness, plus rsp. driver updates
* scheduler: Deprecate drm_sched_resubmit_jobs()
* ttm: Fix MIPS build; Remove ttm_bo_wait(); Documentation fixes
Driver Changes:
* Remove obsolete drivers for userspace modesetting i810, mga, r128,
savage, sis, tdfx, via
* bridge: Support CDNS DSI J721E, plus DT bindings; lt9611: Various
fixes and improvements; sil902x: Various fixes; Fixes
* nouveau: Removed support for legacy ioctls; Replace zero-size array;
Cleanups
* panel: Fixes
* radeon: Use new DRM logging helpers
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Merge tag 'drm-misc-next-2023-01-19' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for $kernel-version:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
* Cleanup unneeded include statements wrt <linux/fb.h>, <drm/drm_fb_helper.h>
and <drm/drm_crtc_helper.h>
* Remove unused helper DRM_DEBUG_KMS_RATELIMITED()
* fbdev: Remove obsolete aperture field from struct fb_device, plus
driver cleanups; Remove unused flag FBINFO_MISC_FIRMWARE
* MIPI-DSI: Fix brightness, plus rsp. driver updates
* scheduler: Deprecate drm_sched_resubmit_jobs()
* ttm: Fix MIPS build; Remove ttm_bo_wait(); Documentation fixes
Driver Changes:
* Remove obsolete drivers for userspace modesetting i810, mga, r128,
savage, sis, tdfx, via
* bridge: Support CDNS DSI J721E, plus DT bindings; lt9611: Various
fixes and improvements; sil902x: Various fixes; Fixes
* nouveau: Removed support for legacy ioctls; Replace zero-size array;
Cleanups
* panel: Fixes
* radeon: Use new DRM logging helpers
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/Y8kDk5YX7Yz3eRhM@linux-uq9g
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Mark Rutland
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8be9fbd534 |
ftrace: Export ftrace_free_filter() to modules
Setting filters on an ftrace ops results in some memory being allocated for the filter hashes, which must be freed before the ops can be freed. This can be done by removing every individual element of the hash by calling ftrace_set_filter_ip() or ftrace_set_filter_ips() with `remove` set, but this is somewhat error prone as it's easy to forget to remove an element. Make it easier to clean this up by exporting ftrace_free_filter(), which can be used to clean up all of the filter hashes after an ftrace_ops has been unregistered. Using this, fix the ftrace-direct* samples to free hashes prior to being unloaded. All other code either removes individual filters explicitly or is built-in and already calls ftrace_free_filter(). Link: https://lkml.kernel.org/r/20230103124912.2948963-3-mark.rutland@arm.com Cc: stable@vger.kernel.org Cc: Florent Revest <revest@chromium.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Fixes: |
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Christoph Hellwig
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0030d7d6ce |
vfio-mdev: move the mtty usage documentation
Move the documentation on how to use mtty to samples/vfio-mdev/README.rst as it is in no way related to the vfio API. This matches how the bpf and pktgen samples are documented. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20230110091009.474427-4-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
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Christoph Hellwig
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8bf8c5ee1f |
vfio-mdev: turn VFIO_MDEV into a selectable symbol
VFIO_MDEV is just a library with helpers for the drivers. Stop making it a user choice and just select it by the drivers that use the helpers. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Link: https://lore.kernel.org/r/20230110091009.474427-3-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
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Christoph Hellwig
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6b182403ee |
vfio-mdev: allow building the samples into the kernel
There is nothing in the vfio-mdev sample drivers that requires building them as modules, so remove that restriction. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Link: https://lore.kernel.org/r/20230110091009.474427-2-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
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Daniel T. Lee
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e04946f54c |
samples/bpf: change _kern suffix to .bpf with BPF test programs
This commit changes the _kern suffix to .bpf with the BPF test programs. With this modification, test programs will inherit the benefit of the new CLANG-BPF compile target. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Link: https://lore.kernel.org/r/20230115071613.125791-11-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Daniel T. Lee
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e8acf8f47a |
samples/bpf: use vmlinux.h instead of implicit headers in BPF test program
This commit applies vmlinux.h to BPF functionality testing program. Macros that were not defined despite migration to "vmlinux.h" were defined separately in individual files. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Link: https://lore.kernel.org/r/20230115071613.125791-10-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Daniel T. Lee
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c2f4f5593e |
samples/bpf: replace BPF programs header with net_shared.h
This commit applies "net_shared.h" to BPF programs to remove existing network related header dependencies. Also, this commit removes unnecessary headers before applying "vmlinux.h" to the BPF programs. Mostly, endianness conversion function has been applied to the source. In addition, several macros have been defined to fulfill the INET, TC-related constants. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Link: https://lore.kernel.org/r/20230115071613.125791-9-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Daniel T. Lee
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e69fe84595 |
samples/bpf: split common macros to net_shared.h
Currently, many programs under sample/bpf often include individual macros by directly including the header under "linux/" rather than using the "vmlinux.h" header. However, there are some problems with migrating to "vmlinux.h" because there is no definition for utility functions such as endianness conversion (ntohs/htons). Fortunately, the xdp_sample program already has a function that can be replaced to solve this problem. Therefore, this commit attempts to separate these functions into a file called net_shared.h to make them universally available. Additionally, this file includes network-related macros that are not defined in "vmlinux.h". (inspired by 'selftests' bpf_tracing_net.h) Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Link: https://lore.kernel.org/r/20230115071613.125791-8-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Daniel T. Lee
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a1f93c8fb0 |
samples/bpf: replace legacy map with the BTF-defined map
With libbpf 1.0 release, support for legacy BPF map declaration syntax
had been dropped. If you run a program using legacy BPF in the latest
libbpf, the following error will be output.
libbpf: map 'lwt_len_hist_map' (legacy): legacy map definitions are deprecated, use BTF-defined maps instead
libbpf: Use of BPF_ANNOTATE_KV_PAIR is deprecated, use BTF-defined maps in .maps section instead
This commit replaces legacy map with the BTF-defined map.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Link: https://lore.kernel.org/r/20230115071613.125791-7-danieltimlee@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Daniel T. Lee
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58e975d014 |
samples/bpf: replace broken overhead microbenchmark with fib_table_lookup
The test_overhead bpf program is designed to compare performance between tracepoint and kprobe. Initially it used task_rename and urandom_read tracepoint. However, commit |
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Daniel T. Lee
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31b12a4159 |
samples/bpf: fix broken cgroup socket testing
Currently, executing test_cgrp2_sock2 fails due to wrong section
header. This 'cgroup/sock1' style section is previously used at
'samples/bpf_load' (deprecated) BPF loader. Because this style isn't
supported in libbpf, this commit fixes this problem by correcting the
section header.
$ sudo ./test_cgrp2_sock2.sh
libbpf: prog 'bpf_prog1': missing BPF prog type, check ELF section name 'cgroup/sock1'
libbpf: prog 'bpf_prog1': failed to load: -22
libbpf: failed to load object './sock_flags_kern.o'
ERROR: loading BPF object file failed
In addition, this BPF program filters ping packets by comparing whether
the socket type uses SOCK_RAW. However, after the ICMP socket[1] was
developed, ping sends ICMP packets using SOCK_DGRAM. Therefore, in this
commit, the packet filtering is changed to use SOCK_DGRAM instead of
SOCK_RAW.
$ strace --trace socket ping -6 -c1 -w1 ::1
socket(AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6) = 3
[1]: https://lwn.net/Articles/422330/
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Link: https://lore.kernel.org/r/20230115071613.125791-5-danieltimlee@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Daniel T. Lee
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dac808c907 |
samples/bpf: fix broken lightweight tunnel testing
The test_lwt_bpf is a script that tests the functionality of BPF through
the output of the ftrace with bpf_trace_printk. Currently, this program
is not operating normally for several reasons.
First of all, this test script can't parse the ftrace results properly.
GNU sed tries to be as greedy as possible when attempting pattern
matching. Due to this, cutting metadata (such as timestamp) from the
log entry of ftrace doesn't work properly, and also desired log isn't
extracted properly. To make sed stripping clearer, 'nocontext-info'
option with the ftrace has been used to remove metadata from the log.
Also, instead of using unclear pattern matching, this commit specifies
an explicit parse pattern.
Also, unlike before when this test was introduced, the way
bpf_trace_printk behaves has changed[1]. The previous bpf_trace_printk
had to always have '\n' in order to print newline, but now that the
bpf_trace_printk call includes newline by default, so '\n' is no longer
needed.
Lastly with the lwt ENCAP_BPF out, the context information with the
sk_buff protocol is preserved. Therefore, this commit changes the
previous test result from 'protocol 0' to 'protocol 8', which means
ETH_P_IP.
[1]: commit
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Daniel T. Lee
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f20f064e84 |
samples/bpf: refactor BPF functionality testing scripts
Currently, some test scripts are experiencing minor errors related to
executing tests.
$ sudo ./test_cgrp2_sock.sh
./test_cgrp2_sock.sh: 22: test_cgrp2_sock: not found
This problem occurs because the path to the execution target is not
properly specified. Therefore, this commit solves this problem by
specifying a relative path to its executables. This commit also makes
a concise refactoring of hard-coded BPF program names.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Link: https://lore.kernel.org/r/20230115071613.125791-3-danieltimlee@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Daniel T. Lee
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d982a2e306 |
samples/bpf: ensure ipv6 is enabled before running tests
Currently, a few of BPF tests use ipv6 functionality. The problem here
is that if ipv6 is disabled, these tests will fail, and even if the
test fails, it will not tell you why it failed.
$ sudo ./test_cgrp2_sock2.sh
RTNETLINK answers: Permission denied
In order to fix this, this commit ensures ipv6 is enabled prior to
running tests.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Link: https://lore.kernel.org/r/20230115071613.125791-2-danieltimlee@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Thomas Zimmermann
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e12fa35444 |
vfio-mdev/mdpy-fb: Do not set struct fb_info.apertures
Generic fbdev drivers use the apertures field in struct fb_info to control ownership of the framebuffer memory and graphics device. Do not set the values in mdpy-fb. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221219160516.23436-10-tzimmermann@suse.de |
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Jakub Kicinski
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d75858ef10 |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCY7X/4wAKCRDbK58LschI g7gzAQCjKsLtAWg1OplW+B7pvEPwkQ8g3O1+PYWlToCUACTlzQD+PEMrqGnxB573 oQAk6I2yOTwLgvlHkrm+TIdKSouI4gs= =2hUY -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== bpf-next 2023-01-04 We've added 45 non-merge commits during the last 21 day(s) which contain a total of 50 files changed, 1454 insertions(+), 375 deletions(-). The main changes are: 1) Fixes, improvements and refactoring of parts of BPF verifier's state equivalence checks, from Andrii Nakryiko. 2) Fix a few corner cases in libbpf's BTF-to-C converter in particular around padding handling and enums, also from Andrii Nakryiko. 3) Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata, from Christian Ehrig. 4) Improve x86 JIT's codegen for PROBE_MEM runtime error checks, from Dave Marchevsky. 5) Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers, from Jiri Olsa. 6) Add proper documentation for BPF_MAP_TYPE_SOCK{MAP,HASH} maps, from Maryam Tahhan. 7) Improvements in libbpf's btf_parse_elf error handling, from Changbin Du. 8) Bigger batch of improvements to BPF tracing code samples, from Daniel T. Lee. 9) Add LoongArch support to libbpf's bpf_tracing helper header, from Hengqi Chen. 10) Fix a libbpf compiler warning in perf_event_open_probe on arm32, from Khem Raj. 11) Optimize bpf_local_storage_elem by removing 56 bytes of padding, from Martin KaFai Lau. 12) Use pkg-config to locate libelf for resolve_btfids build, from Shen Jiamin. 13) Various libbpf improvements around API documentation and errno handling, from Xin Liu. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (45 commits) libbpf: Return -ENODATA for missing btf section libbpf: Add LoongArch support to bpf_tracing.h libbpf: Restore errno after pr_warn. libbpf: Added the description of some API functions libbpf: Fix invalid return address register in s390 samples/bpf: Use BPF_KSYSCALL macro in syscall tracing programs samples/bpf: Fix tracex2 by using BPF_KSYSCALL macro samples/bpf: Change _kern suffix to .bpf with syscall tracing program samples/bpf: Use vmlinux.h instead of implicit headers in syscall tracing program samples/bpf: Use kyscall instead of kprobe in syscall tracing program bpf: rename list_head -> graph_root in field info types libbpf: fix errno is overwritten after being closed. bpf: fix regs_exact() logic in regsafe() to remap IDs correctly bpf: perform byte-by-byte comparison only when necessary in regsafe() bpf: reject non-exact register type matches in regsafe() bpf: generalize MAYBE_NULL vs non-MAYBE_NULL rule bpf: reorganize struct bpf_reg_state fields bpf: teach refsafe() to take into account ID remapping bpf: Remove unused field initialization in bpf's ctl_table selftests/bpf: Add jit probe_mem corner case tests to s390x denylist ... ==================== Link: https://lore.kernel.org/r/20230105000926.31350-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Daniel T. Lee
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c5ffb26375 |
samples/bpf: Use BPF_KSYSCALL macro in syscall tracing programs
This commit enhances the syscall tracing programs by using the BPF_SYSCALL macro to reduce the inconvenience of parsing arguments from pt_regs. By simplifying argument extraction, bpf program will become clear to understand. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20221224071527.2292-6-danieltimlee@gmail.com |
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Daniel T. Lee
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2e5c4dd7f8 |
samples/bpf: Fix tracex2 by using BPF_KSYSCALL macro
Currently, there is a problem with tracex2, as it doesn't print the
histogram properly and the results are misleading. (all results report
as 0)
The problem is caused by a change in arguments of the function to which
the kprobe connects. This tracex2 bpf program uses kprobe (attached
to __x64_sys_write) to figure out the size of the write system call. In
order to achieve this, the third argument 'count' must be intact.
The following is a prototype of the sys_write variant. (checked with
pfunct)
~/git/linux$ pfunct -P fs/read_write.o | grep sys_write
ssize_t ksys_write(unsigned int fd, const char * buf, size_t count);
long int __x64_sys_write(const struct pt_regs * regs);
... cross compile with s390x ...
long int __s390_sys_write(struct pt_regs * regs);
Since the nature of SYSCALL_WRAPPER function wraps the argument once,
additional process of argument extraction is required to properly parse
the argument.
#define BPF_KSYSCALL(name, args...)
... snip ...
struct pt_regs *regs = LINUX_HAS_SYSCALL_WRAPPER \
? (struct pt_regs *)PT_REGS_PARM1(ctx) \
: ctx; \
In order to fix this problem, the BPF_SYSCALL macro has been used. This
reduces the hassle of parsing arguments from pt_regs. Since the macro
uses the CORE version of argument extraction, additional portability
comes too.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221224071527.2292-5-danieltimlee@gmail.com
|
||
|
Daniel T. Lee
|
d4fffba4d0 |
samples/bpf: Change _kern suffix to .bpf with syscall tracing program
Currently old compile rule (CLANG-bpf) doesn't contains VMLINUX_H define
flag which is essential for the bpf program that includes "vmlinux.h".
Also old compile rule doesn't directly specify the compile target as bpf,
instead it uses bunch of extra options with clang followed by long chain
of commands. (e.g. clang | opt | llvm-dis | llc)
In Makefile, there is already new compile rule which is more simple and
neat. And it also has -D__VMLINUX_H__ option. By just changing the _kern
suffix to .bpf will inherit the benefit of the new CLANG-BPF compile
target.
Also, this commit adds dummy gnu/stub.h to the samples/bpf directory.
As commit
|
||
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Daniel T. Lee
|
8a4dd0bcbd |
samples/bpf: Use vmlinux.h instead of implicit headers in syscall tracing program
This commit applies vmlinux.h to syscall tracing program. This change allows the bpf program to refer to the internal structure as a single "vmlinux.h" instead of including each header referenced by the bpf program. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20221224071527.2292-3-danieltimlee@gmail.com |
||
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Daniel T. Lee
|
1d0c5f6f3d |
samples/bpf: Use kyscall instead of kprobe in syscall tracing program
Syscall tracing using kprobe is quite unstable. Since it uses the exact name of the kernel function, the program might broke due to the rename of a function. The problem can also be caused by a changes in the arguments of the function to which the kprobe connects. In this commit, ksyscall is used instead of kprobe. By using ksyscall, libbpf will detect the appropriate kernel function name. (e.g. sys_write -> __s390_sys_write). This eliminates the need to worry about which wrapper function to attach in order to parse arguments. In addition, ksyscall provides more fine method with attaching system call, the coarse SYSCALL helper at trace_common.h can be removed. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20221224071527.2292-2-danieltimlee@gmail.com |
||
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Daniel T. Lee
|
68be98e0f4 |
samples/bpf: fix uninitialized warning with test_current_task_under_cgroup
Currently, compiling samples/bpf with LLVM warns about the uninitialized
use of variable with test_current_task_under_cgroup.
./samples/bpf/test_current_task_under_cgroup_user.c:57:6:
warning: variable 'cg2' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (setup_cgroup_environment())
^~~~~~~~~~~~~~~~~~~~~~~~~~
./samples/bpf/test_current_task_under_cgroup_user.c:106:8:
note: uninitialized use occurs here
close(cg2);
^~~
./samples/bpf/test_current_task_under_cgroup_user.c:57:2:
note: remove the 'if' if its condition is always false
if (setup_cgroup_environment())
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./samples/bpf/test_current_task_under_cgroup_user.c:19:9:
note: initialize the variable 'cg2' to silence this warning
int cg2, idx = 0, rc = 1;
^
= 0
1 warning generated.
This commit resolve this compiler warning by pre-initialize the variable
with error for safeguard.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20221218061453.6287-4-danieltimlee@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
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Daniel T. Lee
|
71135b77aa |
samples/bpf: replace meaningless counter with tracex4
Currently, compiling samples/bpf with LLVM warns about the unused but
set variable with tracex4_user.
./samples/bpf/tracex4_user.c:54:14:
warning: variable 'i' set but not used [-Wunused-but-set-variable]
int map_fd, i, j = 0;
^
1 warning generated.
This commit resolve this compiler warning by replacing the meaningless
counter.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20221218061453.6287-3-danieltimlee@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
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||
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Daniel T. Lee
|
13aa2a9284 |
samples/bpf: remove unused function with test_lru_dist
Currently, compiling samples/bpf with LLVM warns about the unused
function with test_lru_dist.
./samples/bpf/test_lru_dist.c:45:19:
warning: unused function 'list_empty' [-Wunused-function]
static inline int list_empty(const struct list_head *head)
^
1 warning generated.
This commit resolve this compiler warning by removing the abandoned
function.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20221218061453.6287-2-danieltimlee@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
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Linus Torvalds
|
ba54ff1fb6 |
Char/Misc driver changes for 6.2-rc1
Here is the large set of char/misc and other driver subsystem changes for 6.2-rc1. Nothing earth-shattering in here at all, just a lot of new driver development and minor fixes. Highlights include: - fastrpc driver updates - iio new drivers and updates - habanalabs driver updates for new hardware and features - slimbus driver updates - speakup module parameters added to aid in boot time configuration - i2c probe_new conversions for lots of different drivers - other small driver fixes and additions One semi-interesting change in here is the increase of the number of misc dynamic minors available to 1048448 to handle new huge-cpu systems. All of these have been in linux-next for a while with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCY5wrdw8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykSDgCdHjUHS62/UnKdB9rLtyAOFxS/6DgAn2X4Unf8 RN8Mn2mUIiBzyu5p+Zc7 =tK3S -----END PGP SIGNATURE----- Merge tag 'char-misc-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the large set of char/misc and other driver subsystem changes for 6.2-rc1. Nothing earth-shattering in here at all, just a lot of new driver development and minor fixes. Highlights include: - fastrpc driver updates - iio new drivers and updates - habanalabs driver updates for new hardware and features - slimbus driver updates - speakup module parameters added to aid in boot time configuration - i2c probe_new conversions for lots of different drivers - other small driver fixes and additions One semi-interesting change in here is the increase of the number of misc dynamic minors available to 1048448 to handle new huge-cpu systems. All of these have been in linux-next for a while with no reported problems" * tag 'char-misc-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (521 commits) extcon: usbc-tusb320: Convert to i2c's .probe_new() extcon: rt8973: Convert to i2c's .probe_new() extcon: fsa9480: Convert to i2c's .probe_new() extcon: max77843: Replace irqchip mask_invert with unmask_base chardev: fix error handling in cdev_device_add() mcb: mcb-parse: fix error handing in chameleon_parse_gdd() drivers: mcb: fix resource leak in mcb_probe() coresight: etm4x: fix repeated words in comments coresight: cti: Fix null pointer error on CTI init before ETM coresight: trbe: remove cpuhp instance node before remove cpuhp state counter: stm32-lptimer-cnt: fix the check on arr and cmp registers update misc: fastrpc: Add dma_mask to fastrpc_channel_ctx misc: fastrpc: Add mmap request assigning for static PD pool misc: fastrpc: Safekeep mmaps on interrupted invoke misc: fastrpc: Add support for audiopd misc: fastrpc: Rework fastrpc_req_munmap misc: fastrpc: Use fastrpc_map_put in fastrpc_map_create on fail misc: fastrpc: Add fastrpc_remote_heap_alloc misc: fastrpc: Add reserved mem support misc: fastrpc: Rename audio protection domain to root ... |
||
|
Linus Torvalds
|
fe36bb8736 |
Tracing updates for 6.2:
- Add options to the osnoise tracer
o panic_on_stop option that panics the kernel if osnoise is greater than some
user defined threshold.
o preempt option, to test noise while preemption is disabled
o irq option, to test noise when interrupts are disabled
- Add .percent and .graph suffix to histograms to give different outputs
- Add nohitcount to disable showing hitcount in histogram output
- Add new __cpumask() to trace event fields to annotate that a unsigned long
array is a cpumask to user space and should be treated as one.
- Add trace_trigger kernel command line parameter to enable trace event
triggers at boot up. Useful to trace stack traces, disable tracing and take
snapshots.
- Fix x86/kmmio mmio tracer to work with the updates to lockdep
- Unify the panic and die notifiers
- Add back ftrace_expect reference that is used to extract more information in
the ftrace_bug() code.
- Have trigger filter parsing errors show up in the tracing error log.
- Updated MAINTAINERS file to add kernel tracing mailing list and patchwork
info
- Use IDA to keep track of event type numbers.
- And minor fixes and clean ups
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Merge tag 'trace-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- Add options to the osnoise tracer:
- 'panic_on_stop' option that panics the kernel if osnoise is
greater than some user defined threshold.
- 'preempt' option, to test noise while preemption is disabled
- 'irq' option, to test noise when interrupts are disabled
- Add .percent and .graph suffix to histograms to give different
outputs
- Add nohitcount to disable showing hitcount in histogram output
- Add new __cpumask() to trace event fields to annotate that a unsigned
long array is a cpumask to user space and should be treated as one.
- Add trace_trigger kernel command line parameter to enable trace event
triggers at boot up. Useful to trace stack traces, disable tracing
and take snapshots.
- Fix x86/kmmio mmio tracer to work with the updates to lockdep
- Unify the panic and die notifiers
- Add back ftrace_expect reference that is used to extract more
information in the ftrace_bug() code.
- Have trigger filter parsing errors show up in the tracing error log.
- Updated MAINTAINERS file to add kernel tracing mailing list and
patchwork info
- Use IDA to keep track of event type numbers.
- And minor fixes and clean ups
* tag 'trace-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (44 commits)
tracing: Fix cpumask() example typo
tracing: Improve panic/die notifiers
ftrace: Prevent RCU stall on PREEMPT_VOLUNTARY kernels
tracing: Do not synchronize freeing of trigger filter on boot up
tracing: Remove pointer (asterisk) and brackets from cpumask_t field
tracing: Have trigger filter parsing errors show up in error_log
x86/mm/kmmio: Remove redundant preempt_disable()
tracing: Fix infinite loop in tracing_read_pipe on overflowed print_trace_line
Documentation/osnoise: Add osnoise/options documentation
tracing/osnoise: Add preempt and/or irq disabled options
tracing/osnoise: Add PANIC_ON_STOP option
Documentation/osnoise: Escape underscore of NO_ prefix
tracing: Fix some checker warnings
tracing/osnoise: Make osnoise_options static
tracing: remove unnecessary trace_trigger ifdef
ring-buffer: Handle resize in early boot up
tracing/hist: Fix issue of losting command info in error_log
tracing: Fix issue of missing one synthetic field
tracing/hist: Fix out-of-bound write on 'action_data.var_ref_idx'
tracing/hist: Fix wrong return value in parse_action_params()
...
|
||
|
Linus Torvalds
|
785d21ba2f |
VFIO updates for v6.2-rc1
- Replace deprecated git://github.com link in MAINTAINERS. (Palmer Dabbelt)
- Simplify vfio/mlx5 with module_pci_driver() helper. (Shang XiaoJing)
- Drop unnecessary buffer from ACPI call. (Rafael Mendonca)
- Correct latent missing include issue in iova-bitmap and fix support
for unaligned bitmaps. Follow-up with better fix through refactor.
(Joao Martins)
- Rework ccw mdev driver to split private data from parent structure,
better aligning with the mdev lifecycle and allowing us to remove
a temporary workaround. (Eric Farman)
- Add an interface to get an estimated migration data size for a device,
allowing userspace to make informed decisions, ex. more accurately
predicting VM downtime. (Yishai Hadas)
- Fix minor typo in vfio/mlx5 array declaration. (Yishai Hadas)
- Simplify module and Kconfig through consolidating SPAPR/EEH code and
config options and folding virqfd module into main vfio module.
(Jason Gunthorpe)
- Fix error path from device_register() across all vfio mdev and sample
drivers. (Alex Williamson)
- Define migration pre-copy interface and implement for vfio/mlx5
devices, allowing portions of the device state to be saved while the
device continues operation, towards reducing the stop-copy state
size. (Jason Gunthorpe, Yishai Hadas, Shay Drory)
- Implement pre-copy for hisi_acc devices. (Shameer Kolothum)
- Fixes to mdpy mdev driver remove path and error path on probe.
(Shang XiaoJing)
- vfio/mlx5 fixes for incorrect return after copy_to_user() fault and
incorrect buffer freeing. (Dan Carpenter)
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Merge tag 'vfio-v6.2-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Replace deprecated git://github.com link in MAINTAINERS (Palmer
Dabbelt)
- Simplify vfio/mlx5 with module_pci_driver() helper (Shang XiaoJing)
- Drop unnecessary buffer from ACPI call (Rafael Mendonca)
- Correct latent missing include issue in iova-bitmap and fix support
for unaligned bitmaps. Follow-up with better fix through refactor
(Joao Martins)
- Rework ccw mdev driver to split private data from parent structure,
better aligning with the mdev lifecycle and allowing us to remove a
temporary workaround (Eric Farman)
- Add an interface to get an estimated migration data size for a
device, allowing userspace to make informed decisions, ex. more
accurately predicting VM downtime (Yishai Hadas)
- Fix minor typo in vfio/mlx5 array declaration (Yishai Hadas)
- Simplify module and Kconfig through consolidating SPAPR/EEH code and
config options and folding virqfd module into main vfio module (Jason
Gunthorpe)
- Fix error path from device_register() across all vfio mdev and sample
drivers (Alex Williamson)
- Define migration pre-copy interface and implement for vfio/mlx5
devices, allowing portions of the device state to be saved while the
device continues operation, towards reducing the stop-copy state size
(Jason Gunthorpe, Yishai Hadas, Shay Drory)
- Implement pre-copy for hisi_acc devices (Shameer Kolothum)
- Fixes to mdpy mdev driver remove path and error path on probe (Shang
XiaoJing)
- vfio/mlx5 fixes for incorrect return after copy_to_user() fault and
incorrect buffer freeing (Dan Carpenter)
* tag 'vfio-v6.2-rc1' of https://github.com/awilliam/linux-vfio: (42 commits)
vfio/mlx5: error pointer dereference in error handling
vfio/mlx5: fix error code in mlx5vf_precopy_ioctl()
samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe()
hisi_acc_vfio_pci: Enable PRE_COPY flag
hisi_acc_vfio_pci: Move the dev compatibility tests for early check
hisi_acc_vfio_pci: Introduce support for PRE_COPY state transitions
hisi_acc_vfio_pci: Add support for precopy IOCTL
vfio/mlx5: Enable MIGRATION_PRE_COPY flag
vfio/mlx5: Fallback to STOP_COPY upon specific PRE_COPY error
vfio/mlx5: Introduce multiple loads
vfio/mlx5: Consider temporary end of stream as part of PRE_COPY
vfio/mlx5: Introduce vfio precopy ioctl implementation
vfio/mlx5: Introduce SW headers for migration states
vfio/mlx5: Introduce device transitions of PRE_COPY
vfio/mlx5: Refactor to use queue based data chunks
vfio/mlx5: Refactor migration file state
vfio/mlx5: Refactor MKEY usage
vfio/mlx5: Refactor PD usage
vfio/mlx5: Enforce a single SAVE command at a time
vfio: Extend the device migration protocol with PRE_COPY
...
|
||
|
Linus Torvalds
|
94a855111e |
- Add the call depth tracking mitigation for Retbleed which has
been long in the making. It is a lighterweight software-only fix for Skylake-based cores where enabling IBRS is a big hammer and causes a significant performance impact. What it basically does is, it aligns all kernel functions to 16 bytes boundary and adds a 16-byte padding before the function, objtool collects all functions' locations and when the mitigation gets applied, it patches a call accounting thunk which is used to track the call depth of the stack at any time. When that call depth reaches a magical, microarchitecture-specific value for the Return Stack Buffer, the code stuffs that RSB and avoids its underflow which could otherwise lead to the Intel variant of Retbleed. This software-only solution brings a lot of the lost performance back, as benchmarks suggest: https://lore.kernel.org/all/20220915111039.092790446@infradead.org/ That page above also contains a lot more detailed explanation of the whole mechanism - Implement a new control flow integrity scheme called FineIBT which is based on the software kCFI implementation and uses hardware IBT support where present to annotate and track indirect branches using a hash to validate them - Other misc fixes and cleanups -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmOZp5EACgkQEsHwGGHe VUrZFxAAvi/+8L0IYSK4mKJvixGbTFjxN/Swo2JVOfs34LqGUT6JaBc+VUMwZxdb VMTFIZ3ttkKEodjhxGI7oGev6V8UfhI37SmO2lYKXpQVjXXnMlv/M+Vw3teE38CN gopi+xtGnT1IeWQ3tc/Tv18pleJ0mh5HKWiW+9KoqgXj0wgF9x4eRYDz1TDCDA/A iaBzs56j8m/FSykZHnrWZ/MvjKNPdGlfJASUCPeTM2dcrXQGJ93+X2hJctzDte0y Nuiw6Y0htfFBE7xoJn+sqm5Okr+McoUM18/CCprbgSKYk18iMYm3ZtAi6FUQZS1A ua4wQCf49loGp15PO61AS5d3OBf5D3q/WihQRbCaJvTVgPp9sWYnWwtcVUuhMllh ZQtBU9REcVJ/22bH09Q9CjBW0VpKpXHveqQdqRDViLJ6v/iI6EFGmD24SW/VxyRd 73k9MBGrL/dOf1SbEzdsnvcSB3LGzp0Om8o/KzJWOomrVKjBCJy16bwTEsCZEJmP i406m92GPXeaN1GhTko7vmF0GnkEdJs1GVCZPluCAxxbhHukyxHnrjlQjI4vC80n Ylc0B3Kvitw7LGJsPqu+/jfNHADC/zhx1qz/30wb5cFmFbN1aRdp3pm8JYUkn+l/ zri2Y6+O89gvE/9/xUhMohzHsWUO7xITiBavewKeTP9GSWybWUs= =cRy1 -----END PGP SIGNATURE----- Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 core updates from Borislav Petkov: - Add the call depth tracking mitigation for Retbleed which has been long in the making. It is a lighterweight software-only fix for Skylake-based cores where enabling IBRS is a big hammer and causes a significant performance impact. What it basically does is, it aligns all kernel functions to 16 bytes boundary and adds a 16-byte padding before the function, objtool collects all functions' locations and when the mitigation gets applied, it patches a call accounting thunk which is used to track the call depth of the stack at any time. When that call depth reaches a magical, microarchitecture-specific value for the Return Stack Buffer, the code stuffs that RSB and avoids its underflow which could otherwise lead to the Intel variant of Retbleed. This software-only solution brings a lot of the lost performance back, as benchmarks suggest: https://lore.kernel.org/all/20220915111039.092790446@infradead.org/ That page above also contains a lot more detailed explanation of the whole mechanism - Implement a new control flow integrity scheme called FineIBT which is based on the software kCFI implementation and uses hardware IBT support where present to annotate and track indirect branches using a hash to validate them - Other misc fixes and cleanups * tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (80 commits) x86/paravirt: Use common macro for creating simple asm paravirt functions x86/paravirt: Remove clobber bitmask from .parainstructions x86/debug: Include percpu.h in debugreg.h to get DECLARE_PER_CPU() et al x86/cpufeatures: Move X86_FEATURE_CALL_DEPTH from bit 18 to bit 19 of word 11, to leave space for WIP X86_FEATURE_SGX_EDECCSSA bit x86/Kconfig: Enable kernel IBT by default x86,pm: Force out-of-line memcpy() objtool: Fix weak hole vs prefix symbol objtool: Optimize elf_dirty_reloc_sym() x86/cfi: Add boot time hash randomization x86/cfi: Boot time selection of CFI scheme x86/ibt: Implement FineIBT objtool: Add --cfi to generate the .cfi_sites section x86: Add prefix symbols for function padding objtool: Add option to generate prefix symbols objtool: Avoid O(bloody terrible) behaviour -- an ode to libelf objtool: Slice up elf_create_section_symbol() kallsyms: Revert "Take callthunks into account" x86: Unconfuse CONFIG_ and X86_FEATURE_ namespaces x86/retpoline: Fix crash printing warning x86/paravirt: Fix a !PARAVIRT build warning ... |
||
Steven Rostedt (Google)
|
eb9d58947d |
tracing: Fix cpumask() example typo
The sample code for using cpumask used the wrong field for the __get_cpumask() helper. It used "cpus" which is the bitmask (but would still give a proper example) instead of the "cpum" that was there to be used. Although it produces the same output, fix it, because it's an example and is confusing in how to properly use the cpumask() macro. Link: https://lore.kernel.org/linux-trace-kernel/20221213221227.56560374@gandalf.local.home Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
7e68dd7d07 |
Networking changes for 6.2.
Core
----
- Allow live renaming when an interface is up
- Add retpoline wrappers for tc, improving considerably the
performances of complex queue discipline configurations.
- Add inet drop monitor support.
- A few GRO performance improvements.
- Add infrastructure for atomic dev stats, addressing long standing
data races.
- De-duplicate common code between OVS and conntrack offloading
infrastructure.
- A bunch of UBSAN_BOUNDS/FORTIFY_SOURCE improvements.
- Netfilter: introduce packet parser for tunneled packets
- Replace IPVS timer-based estimators with kthreads to scale up
the workload with the number of available CPUs.
- Add the helper support for connection-tracking OVS offload.
BPF
---
- Support for user defined BPF objects: the use case is to allocate
own objects, build own object hierarchies and use the building
blocks to build own data structures flexibly, for example, linked
lists in BPF.
- Make cgroup local storage available to non-cgroup attached BPF
programs.
- Avoid unnecessary deadlock detection and failures wrt BPF task
storage helpers.
- A relevant bunch of BPF verifier fixes and improvements.
- Veristat tool improvements to support custom filtering, sorting,
and replay of results.
- Add LLVM disassembler as default library for dumping JITed code.
- Lots of new BPF documentation for various BPF maps.
- Add bpf_rcu_read_{,un}lock() support for sleepable programs.
- Add RCU grace period chaining to BPF to wait for the completion
of access from both sleepable and non-sleepable BPF programs.
- Add support storing struct task_struct objects as kptrs in maps.
- Improve helper UAPI by explicitly defining BPF_FUNC_xxx integer
values.
- Add libbpf *_opts API-variants for bpf_*_get_fd_by_id() functions.
Protocols
---------
- TCP: implement Protective Load Balancing across switch links.
- TCP: allow dynamically disabling TCP-MD5 static key, reverting
back to fast[er]-path.
- UDP: Introduce optional per-netns hash lookup table.
- IPv6: simplify and cleanup sockets disposal.
- Netlink: support different type policies for each generic
netlink operation.
- MPTCP: add MSG_FASTOPEN and FastOpen listener side support.
- MPTCP: add netlink notification support for listener sockets
events.
- SCTP: add VRF support, allowing sctp sockets binding to VRF
devices.
- Add bridging MAC Authentication Bypass (MAB) support.
- Extensions for Ethernet VPN bridging implementation to better
support multicast scenarios.
- More work for Wi-Fi 7 support, comprising conversion of all
the existing drivers to internal TX queue usage.
- IPSec: introduce a new offload type (packet offload) allowing
complete header processing and crypto offloading.
- IPSec: extended ack support for more descriptive XFRM error
reporting.
- RXRPC: increase SACK table size and move processing into a
per-local endpoint kernel thread, reducing considerably the
required locking.
- IEEE 802154: synchronous send frame and extended filtering
support, initial support for scanning available 15.4 networks.
- Tun: bump the link speed from 10Mbps to 10Gbps.
- Tun/VirtioNet: implement UDP segmentation offload support.
Driver API
----------
- PHY/SFP: improve power level switching between standard
level 1 and the higher power levels.
- New API for netdev <-> devlink_port linkage.
- PTP: convert existing drivers to new frequency adjustment
implementation.
- DSA: add support for rx offloading.
- Autoload DSA tagging driver when dynamically changing protocol.
- Add new PCP and APPTRUST attributes to Data Center Bridging.
- Add configuration support for 800Gbps link speed.
- Add devlink port function attribute to enable/disable RoCE and
migratable.
- Extend devlink-rate to support strict prioriry and weighted fair
queuing.
- Add devlink support to directly reading from region memory.
- New device tree helper to fetch MAC address from nvmem.
- New big TCP helper to simplify temporary header stripping.
New hardware / drivers
----------------------
- Ethernet:
- Marvel Octeon CNF95N and CN10KB Ethernet Switches.
- Marvel Prestera AC5X Ethernet Switch.
- WangXun 10 Gigabit NIC.
- Motorcomm yt8521 Gigabit Ethernet.
- Microchip ksz9563 Gigabit Ethernet Switch.
- Microsoft Azure Network Adapter.
- Linux Automation 10Base-T1L adapter.
- PHY:
- Aquantia AQR112 and AQR412.
- Motorcomm YT8531S.
- PTP:
- Orolia ART-CARD.
- WiFi:
- MediaTek Wi-Fi 7 (802.11be) devices.
- RealTek rtw8821cu, rtw8822bu, rtw8822cu and rtw8723du USB
devices.
- Bluetooth:
- Broadcom BCM4377/4378/4387 Bluetooth chipsets.
- Realtek RTL8852BE and RTL8723DS.
- Cypress.CYW4373A0 WiFi + Bluetooth combo device.
Drivers
-------
- CAN:
- gs_usb: bus error reporting support.
- kvaser_usb: listen only and bus error reporting support.
- Ethernet NICs:
- Intel (100G):
- extend action skbedit to RX queue mapping.
- implement devlink-rate support.
- support direct read from memory.
- nVidia/Mellanox (mlx5):
- SW steering improvements, increasing rules update rate.
- Support for enhanced events compression.
- extend H/W offload packet manipulation capabilities.
- implement IPSec packet offload mode.
- nVidia/Mellanox (mlx4):
- better big TCP support.
- Netronome Ethernet NICs (nfp):
- IPsec offload support.
- add support for multicast filter.
- Broadcom:
- RSS and PTP support improvements.
- AMD/SolarFlare:
- netlink extened ack improvements.
- add basic flower matches to offload, and related stats.
- Virtual NICs:
- ibmvnic: introduce affinity hint support.
- small / embedded:
- FreeScale fec: add initial XDP support.
- Marvel mv643xx_eth: support MII/GMII/RGMII modes for Kirkwood.
- TI am65-cpsw: add suspend/resume support.
- Mediatek MT7986: add RX wireless wthernet dispatch support.
- Realtek 8169: enable GRO software interrupt coalescing per
default.
- Ethernet high-speed switches:
- Microchip (sparx5):
- add support for Sparx5 TC/flower H/W offload via VCAP.
- Mellanox mlxsw:
- add 802.1X and MAC Authentication Bypass offload support.
- add ip6gre support.
- Embedded Ethernet switches:
- Mediatek (mtk_eth_soc):
- improve PCS implementation, add DSA untag support.
- enable flow offload support.
- Renesas:
- add rswitch R-Car Gen4 gPTP support.
- Microchip (lan966x):
- add full XDP support.
- add TC H/W offload via VCAP.
- enable PTP on bridge interfaces.
- Microchip (ksz8):
- add MTU support for KSZ8 series.
- Qualcomm 802.11ax WiFi (ath11k):
- support configuring channel dwell time during scan.
- MediaTek WiFi (mt76):
- enable Wireless Ethernet Dispatch (WED) offload support.
- add ack signal support.
- enable coredump support.
- remain_on_channel support.
- Intel WiFi (iwlwifi):
- enable Wi-Fi 7 Extremely High Throughput (EHT) PHY capabilities.
- 320 MHz channels support.
- RealTek WiFi (rtw89):
- new dynamic header firmware format support.
- wake-over-WLAN support.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Allow live renaming when an interface is up
- Add retpoline wrappers for tc, improving considerably the
performances of complex queue discipline configurations
- Add inet drop monitor support
- A few GRO performance improvements
- Add infrastructure for atomic dev stats, addressing long standing
data races
- De-duplicate common code between OVS and conntrack offloading
infrastructure
- A bunch of UBSAN_BOUNDS/FORTIFY_SOURCE improvements
- Netfilter: introduce packet parser for tunneled packets
- Replace IPVS timer-based estimators with kthreads to scale up the
workload with the number of available CPUs
- Add the helper support for connection-tracking OVS offload
BPF:
- Support for user defined BPF objects: the use case is to allocate
own objects, build own object hierarchies and use the building
blocks to build own data structures flexibly, for example, linked
lists in BPF
- Make cgroup local storage available to non-cgroup attached BPF
programs
- Avoid unnecessary deadlock detection and failures wrt BPF task
storage helpers
- A relevant bunch of BPF verifier fixes and improvements
- Veristat tool improvements to support custom filtering, sorting,
and replay of results
- Add LLVM disassembler as default library for dumping JITed code
- Lots of new BPF documentation for various BPF maps
- Add bpf_rcu_read_{,un}lock() support for sleepable programs
- Add RCU grace period chaining to BPF to wait for the completion of
access from both sleepable and non-sleepable BPF programs
- Add support storing struct task_struct objects as kptrs in maps
- Improve helper UAPI by explicitly defining BPF_FUNC_xxx integer
values
- Add libbpf *_opts API-variants for bpf_*_get_fd_by_id() functions
Protocols:
- TCP: implement Protective Load Balancing across switch links
- TCP: allow dynamically disabling TCP-MD5 static key, reverting back
to fast[er]-path
- UDP: Introduce optional per-netns hash lookup table
- IPv6: simplify and cleanup sockets disposal
- Netlink: support different type policies for each generic netlink
operation
- MPTCP: add MSG_FASTOPEN and FastOpen listener side support
- MPTCP: add netlink notification support for listener sockets events
- SCTP: add VRF support, allowing sctp sockets binding to VRF devices
- Add bridging MAC Authentication Bypass (MAB) support
- Extensions for Ethernet VPN bridging implementation to better
support multicast scenarios
- More work for Wi-Fi 7 support, comprising conversion of all the
existing drivers to internal TX queue usage
- IPSec: introduce a new offload type (packet offload) allowing
complete header processing and crypto offloading
- IPSec: extended ack support for more descriptive XFRM error
reporting
- RXRPC: increase SACK table size and move processing into a
per-local endpoint kernel thread, reducing considerably the
required locking
- IEEE 802154: synchronous send frame and extended filtering support,
initial support for scanning available 15.4 networks
- Tun: bump the link speed from 10Mbps to 10Gbps
- Tun/VirtioNet: implement UDP segmentation offload support
Driver API:
- PHY/SFP: improve power level switching between standard level 1 and
the higher power levels
- New API for netdev <-> devlink_port linkage
- PTP: convert existing drivers to new frequency adjustment
implementation
- DSA: add support for rx offloading
- Autoload DSA tagging driver when dynamically changing protocol
- Add new PCP and APPTRUST attributes to Data Center Bridging
- Add configuration support for 800Gbps link speed
- Add devlink port function attribute to enable/disable RoCE and
migratable
- Extend devlink-rate to support strict prioriry and weighted fair
queuing
- Add devlink support to directly reading from region memory
- New device tree helper to fetch MAC address from nvmem
- New big TCP helper to simplify temporary header stripping
New hardware / drivers:
- Ethernet:
- Marvel Octeon CNF95N and CN10KB Ethernet Switches
- Marvel Prestera AC5X Ethernet Switch
- WangXun 10 Gigabit NIC
- Motorcomm yt8521 Gigabit Ethernet
- Microchip ksz9563 Gigabit Ethernet Switch
- Microsoft Azure Network Adapter
- Linux Automation 10Base-T1L adapter
- PHY:
- Aquantia AQR112 and AQR412
- Motorcomm YT8531S
- PTP:
- Orolia ART-CARD
- WiFi:
- MediaTek Wi-Fi 7 (802.11be) devices
- RealTek rtw8821cu, rtw8822bu, rtw8822cu and rtw8723du USB
devices
- Bluetooth:
- Broadcom BCM4377/4378/4387 Bluetooth chipsets
- Realtek RTL8852BE and RTL8723DS
- Cypress.CYW4373A0 WiFi + Bluetooth combo device
Drivers:
- CAN:
- gs_usb: bus error reporting support
- kvaser_usb: listen only and bus error reporting support
- Ethernet NICs:
- Intel (100G):
- extend action skbedit to RX queue mapping
- implement devlink-rate support
- support direct read from memory
- nVidia/Mellanox (mlx5):
- SW steering improvements, increasing rules update rate
- Support for enhanced events compression
- extend H/W offload packet manipulation capabilities
- implement IPSec packet offload mode
- nVidia/Mellanox (mlx4):
- better big TCP support
- Netronome Ethernet NICs (nfp):
- IPsec offload support
- add support for multicast filter
- Broadcom:
- RSS and PTP support improvements
- AMD/SolarFlare:
- netlink extened ack improvements
- add basic flower matches to offload, and related stats
- Virtual NICs:
- ibmvnic: introduce affinity hint support
- small / embedded:
- FreeScale fec: add initial XDP support
- Marvel mv643xx_eth: support MII/GMII/RGMII modes for Kirkwood
- TI am65-cpsw: add suspend/resume support
- Mediatek MT7986: add RX wireless wthernet dispatch support
- Realtek 8169: enable GRO software interrupt coalescing per
default
- Ethernet high-speed switches:
- Microchip (sparx5):
- add support for Sparx5 TC/flower H/W offload via VCAP
- Mellanox mlxsw:
- add 802.1X and MAC Authentication Bypass offload support
- add ip6gre support
- Embedded Ethernet switches:
- Mediatek (mtk_eth_soc):
- improve PCS implementation, add DSA untag support
- enable flow offload support
- Renesas:
- add rswitch R-Car Gen4 gPTP support
- Microchip (lan966x):
- add full XDP support
- add TC H/W offload via VCAP
- enable PTP on bridge interfaces
- Microchip (ksz8):
- add MTU support for KSZ8 series
- Qualcomm 802.11ax WiFi (ath11k):
- support configuring channel dwell time during scan
- MediaTek WiFi (mt76):
- enable Wireless Ethernet Dispatch (WED) offload support
- add ack signal support
- enable coredump support
- remain_on_channel support
- Intel WiFi (iwlwifi):
- enable Wi-Fi 7 Extremely High Throughput (EHT) PHY capabilities
- 320 MHz channels support
- RealTek WiFi (rtw89):
- new dynamic header firmware format support
- wake-over-WLAN support"
* tag 'net-next-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2002 commits)
ipvs: fix type warning in do_div() on 32 bit
net: lan966x: Remove a useless test in lan966x_ptp_add_trap()
net: ipa: add IPA v4.7 support
dt-bindings: net: qcom,ipa: Add SM6350 compatible
bnxt: Use generic HBH removal helper in tx path
IPv6/GRO: generic helper to remove temporary HBH/jumbo header in driver
selftests: forwarding: Add bridge MDB test
selftests: forwarding: Rename bridge_mdb test
bridge: mcast: Support replacement of MDB port group entries
bridge: mcast: Allow user space to specify MDB entry routing protocol
bridge: mcast: Allow user space to add (*, G) with a source list and filter mode
bridge: mcast: Add support for (*, G) with a source list and filter mode
bridge: mcast: Avoid arming group timer when (S, G) corresponds to a source
bridge: mcast: Add a flag for user installed source entries
bridge: mcast: Expose __br_multicast_del_group_src()
bridge: mcast: Expose br_multicast_new_group_src()
bridge: mcast: Add a centralized error path
bridge: mcast: Place netlink policy before validation functions
bridge: mcast: Split (*, G) and (S, G) addition into different functions
bridge: mcast: Do not derive entry type from its filter mode
...
|
||
|
Linus Torvalds
|
299e2b1967 |
Landlock updates for v6.2-rc1
-----BEGIN PGP SIGNATURE----- iIYEABYIAC4WIQSVyBthFV4iTW/VU1/l49DojIL20gUCY5b27RAcbWljQGRpZ2lr b2QubmV0AAoJEOXj0OiMgvbSg9YA/0K10H+VsGt1+qqR4+w9SM7SFzbgszrV3Yw9 rwiPgaPVAP9rxXPr2bD2hAk7/Lv9LeJ2kfM9RzMErP1A6UsC5YVbDA== =mAG7 -----END PGP SIGNATURE----- Merge tag 'landlock-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux Pull landlock updates from Mickaël Salaün: "This adds file truncation support to Landlock, contributed by Günther Noack. As described by Günther [1], the goal of these patches is to work towards a more complete coverage of file system operations that are restrictable with Landlock. The known set of currently unsupported file system operations in Landlock is described at [2]. Out of the operations listed there, truncate is the only one that modifies file contents, so these patches should make it possible to prevent the direct modification of file contents with Landlock. The new LANDLOCK_ACCESS_FS_TRUNCATE access right covers both the truncate(2) and ftruncate(2) families of syscalls, as well as open(2) with the O_TRUNC flag. This includes usages of creat() in the case where existing regular files are overwritten. Additionally, this introduces a new Landlock security blob associated with opened files, to track the available Landlock access rights at the time of opening the file. This is in line with Unix's general approach of checking the read and write permissions during open(), and associating this previously checked authorization with the opened file. An ongoing patch documents this use case [3]. In order to treat truncate(2) and ftruncate(2) calls differently in an LSM hook, we split apart the existing security_path_truncate hook into security_path_truncate (for truncation by path) and security_file_truncate (for truncation of previously opened files)" Link: https://lore.kernel.org/r/20221018182216.301684-1-gnoack3000@gmail.com [1] Link: https://www.kernel.org/doc/html/v6.1/userspace-api/landlock.html#filesystem-flags [2] Link: https://lore.kernel.org/r/20221209193813.972012-1-mic@digikod.net [3] * tag 'landlock-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: samples/landlock: Document best-effort approach for LANDLOCK_ACCESS_FS_REFER landlock: Document Landlock's file truncation support samples/landlock: Extend sample tool to support LANDLOCK_ACCESS_FS_TRUNCATE selftests/landlock: Test ftruncate on FDs created by memfd_create(2) selftests/landlock: Test FD passing from restricted to unrestricted processes selftests/landlock: Locally define __maybe_unused selftests/landlock: Test open() and ftruncate() in multiple scenarios selftests/landlock: Test file truncation support landlock: Support file truncation landlock: Document init_layer_masks() helper landlock: Refactor check_access_path_dual() into is_access_to_paths_allowed() security: Create file_truncate hook from path_truncate hook |
||
Shang XiaoJing
|
d1f0f50fbb |
samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe()
Add missing pci_disable_device() in fail path of mdpy_fb_probe().
Besides, fix missing release functions in mdpy_fb_remove().
Fixes:
|
||
Alex Williamson
|
ce3895735c |
vfio/ap/ccw/samples: Fix device_register() unwind path
We always need to call put_device() if device_register() fails. All vfio drivers calling device_register() include a similar unwind stack via gotos, therefore split device_unregister() into its device_del() and put_device() components in the unwind path, and add a goto target to handle only the put_device() requirement. Reported-by: Ruan Jinjie <ruanjinjie@huawei.com> Link: https://lore.kernel.org/all/20221118032827.3725190-1-ruanjinjie@huawei.com Fixes: |
||
Gary Guo
|
b13c9880f9 |
rust: macros: take string literals in module!
Instead of taking binary string literals, take string ones instead,
making it easier for users to define a module, i.e. instead of
calling `module!` like:
module! {
...
name: b"rust_minimal",
...
}
now it is called as:
module! {
...
name: "rust_minimal",
...
}
Module names, aliases and license strings are restricted to
ASCII only. However, the author and the description allows UTF-8.
For simplicity (avoid parsing), escape sequences and raw string
literals are not yet handled.
Link: https://github.com/Rust-for-Linux/linux/issues/252
Link: https://lore.kernel.org/lkml/YukvvPOOu8uZl7+n@yadro.com/
Signed-off-by: Gary Guo <gary@garyguo.net>
[Reworded, adapted for upstream and applied latest changes]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
|
||
Miguel Ojeda
|
c3630df66f |
rust: samples: add rust_print example
Add example to exercise the printing macros (`pr_*!`) introduced in the previous patches. Reviewed-by: Finn Behrens <me@kloenk.dev> Reviewed-by: Wei Liu <wei.liu@kernel.org> Tested-by: Sergio González Collado <sergio.collado@gmail.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
||
|
Jakub Kicinski
|
d6dc62fca6 |
bpf-next-for-netdev
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Daniel Borkmann says:
====================
bpf-next 2022-11-25
We've added 101 non-merge commits during the last 11 day(s) which contain
a total of 109 files changed, 8827 insertions(+), 1129 deletions(-).
The main changes are:
1) Support for user defined BPF objects: the use case is to allocate own
objects, build own object hierarchies and use the building blocks to
build own data structures flexibly, for example, linked lists in BPF,
from Kumar Kartikeya Dwivedi.
2) Add bpf_rcu_read_{,un}lock() support for sleepable programs,
from Yonghong Song.
3) Add support storing struct task_struct objects as kptrs in maps,
from David Vernet.
4) Batch of BPF map documentation improvements, from Maryam Tahhan
and Donald Hunter.
5) Improve BPF verifier to propagate nullness information for branches
of register to register comparisons, from Eduard Zingerman.
6) Fix cgroup BPF iter infra to hold reference on the start cgroup,
from Hou Tao.
7) Fix BPF verifier to not mark fentry/fexit program arguments as trusted
given it is not the case for them, from Alexei Starovoitov.
8) Improve BPF verifier's realloc handling to better play along with dynamic
runtime analysis tools like KASAN and friends, from Kees Cook.
9) Remove legacy libbpf mode support from bpftool,
from Sahid Orentino Ferdjaoui.
10) Rework zero-len skb redirection checks to avoid potentially breaking
existing BPF test infra users, from Stanislav Fomichev.
11) Two small refactorings which are independent and have been split out
of the XDP queueing RFC series, from Toke Høiland-Jørgensen.
12) Fix a memory leak in LSM cgroup BPF selftest, from Wang Yufen.
13) Documentation on how to run BPF CI without patch submission,
from Daniel Müller.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
====================
Link: https://lore.kernel.org/r/20221125012450.441-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Rong Tao
|
19a2bdbaad |
samples/bpf: Fix wrong allocation size in xdp_router_ipv4_user
prefix_key->data allocates three bytes using alloca(), but four bytes are actually accessed in the program. Signed-off-by: Rong Tao <rongtao@cestc.cn> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/tencent_F9E2E81922B0C181D05B96DAE5AB0ACE6B06@qq.com |
||
|
Steven Rostedt (Google)
|
8230f27b1c |
tracing: Add __cpumask to denote a trace event field that is a cpumask_t
The trace events have a __bitmask field that can be used for anything that requires bitmasks. Although currently it is only used for CPU masks, it could be used in the future for any type of bitmasks. There is some user space tooling that wants to know if a field is a CPU mask and not just some random unsigned long bitmask. Introduce "__cpumask()" helper functions that work the same as the current __bitmask() helpers but displays in the format file: field:__data_loc cpumask_t *[] mask; offset:36; size:4; signed:0; Instead of: field:__data_loc unsigned long[] mask; offset:32; size:4; signed:0; The main difference is the type. Instead of "unsigned long" it is "cpumask_t *". Note, this type field needs to be a real type in the __dynamic_array() logic that both __cpumask and__bitmask use, but the comparison field requires it to be a scalar type whereas cpumask_t is a structure (non-scalar). But everything works when making it a pointer. Valentin added changes to remove the need of passing in "nr_bits" and the __cpumask will always use nr_cpumask_bits as its size. Link: https://lkml.kernel.org/r/20221014080456.1d32b989@rorschach.local.home Requested-by: Valentin Schneider <vschneid@redhat.com> Reviewed-by: Valentin Schneider <vschneid@redhat.com> Signed-off-by: Valentin Schneider <vschneid@redhat.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
Andy Shevchenko
|
1dbb4f0235 |
virt: acrn: Mark the uuid field as unused
After the commits for userspace (see Link tags below) the uuid field is not being used in the ACRN code. Update kernel to reflect these changes, i.e. do the following: - adding a comment explaining that it's not used anymore - replacing the specific type by a raw buffer - updating the example code accordingly The advertised field confused users and actually never been used. So the wrong part here is that kernel puts something which userspace never used and hence this may confuse a reader of this code. Note, that there is only a single tool that had been prepared a year ago for these forthcoming changes in the kernel. Link: https://github.com/projectacrn/acrn-hypervisor/commit/da0d24326ed6 Link: https://github.com/projectacrn/acrn-hypervisor/commit/bb0327e70097 Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20221116162956.72658-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Tiezhu Yang
|
6dcd6d0152 |
samples: pktgen: Use "grep -E" instead of "egrep"
The latest version of grep claims the egrep is now obsolete so the build now contains warnings that look like: egrep: warning: egrep is obsolescent; using grep -E fix this up by moving the related file to use "grep -E" instead. sed -i "s/egrep/grep -E/g" `grep egrep -rwl samples/pktgen` Here are the steps to install the latest grep: wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz tar xf grep-3.8.tar.gz cd grep-3.8 && ./configure && make sudo make install export PATH=/usr/local/bin:$PATH Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Link: https://lore.kernel.org/r/1668826504-32162-1-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
Colin Ian King
|
2364b5060d |
samples/hid: Fix spelling mistake "wihout" -> "without"
There is a spelling mistake in a comment and a usage message. Fix them. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> |
||
|
Tiezhu Yang
|
ee748cd95e |
bpf, samples: Use "grep -E" instead of "egrep"
The latest version of grep (3.8+) claims the egrep is now obsolete so the build now contains warnings that look like: egrep: warning: egrep is obsolescent; using grep -E Fix this up by moving the related file to use "grep -E" instead. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/bpf/1668765001-12477-1-git-send-email-yangtiezhu@loongson.cn |
||
|
Benjamin Tissoires
|
a56a256933 |
samples/hid: add Surface Dial example
Add a more complete HID-BPF example. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> |
||
|
Benjamin Tissoires
|
6008105b4f |
samples/hid: add new hid BPF example
Everything should be available in the selftest part of the tree, but providing an example without uhid and hidraw will be more easy to follow for users. This example will probably ever only work on the Etekcity Scroll 6E because we need to adapt the various raw values to the actual device. On that device, the X and Y axis will be swapped and inverted, and on any other device, chances are high that the device will not work until Ctrl-C is hit. The Makefiles are taken from samples/bpf to not reinvent the wheel and to force using in-kernel libbpf and bpftool. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> |
||
Eric Farman
|
913447d06f |
vfio: Remove vfio_free_device
With the "mess" sorted out, we should be able to inline the
vfio_free_device call introduced by commit
|
||
|
Rong Tao
|
e5659e4e19 |
samples/bpf: Fix sockex3 error: Missing BPF prog type
since commit 450b167fb9be("libbpf: clean up SEC() handling"),
sec_def_matches() does not recognize "socket/xxx" as "socket", therefore,
the BPF program type is not recognized.
Instead of sockex3_user.c parsing section names to get the BPF program fd.
We use the program array map to assign a static index to each BPF program
(get inspired by selftests/bpf progs/test_prog_array_init.c).
Therefore, use SEC("socket") as section name instead of SEC("socket/xxx"),
so that the BPF program is parsed to SOCKET_FILTER type. The "missing BPF
prog type" problem is solved.
How to reproduce this error:
$ cd samples/bpf
$ sudo ./sockex3
libbpf: prog 'bpf_func_PARSE_IP': missing BPF prog type, check ELF section name 'socket/3'
libbpf: prog 'bpf_func_PARSE_IP': failed to load: -22
libbpf: failed to load object './sockex3_kern.o'
ERROR: loading BPF object file failed
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/tencent_EBA3C18864069E42175946973C2ACBAF5408@qq.com
|
||
Günther Noack
|
f6e53fb2d7
|
samples/landlock: Document best-effort approach for LANDLOCK_ACCESS_FS_REFER
Add a comment to clarify how to handle best-effort backwards compatibility for LANDLOCK_ACCESS_FS_REFER. The "refer" access is special because these operations are always forbidden in ABI 1, unlike most other operations, which are permitted when using Landlock ABI levels where they are not supported yet. Signed-off-by: Günther Noack <gnoack3000@gmail.com> Link: https://lore.kernel.org/r/20221107181651.4555-1-gnoack3000@gmail.com Signed-off-by: Mickaël Salaün <mic@digikod.net> |
||
|
Rong Tao
|
1baa7e3800 |
samples/bpf: Fix tracex2 error: No such file or directory
since commit c504e5c2f964("net: skb: introduce kfree_skb_reason()")
kfree_skb() is replaced by kfree_skb_reason() and kfree_skb() is set to
the inline function. So, we replace kprobe/kfree_skb with
kprobe/kfree_skb_reason to solve the tracex2 error.
$ cd samples/bpf
$ sudo ./tracex2
libbpf: prog 'bpf_prog2': failed to create kprobe 'kfree_skb+0x0' perf event: No such file or directory
ERROR: bpf_program__attach failed
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/tencent_0F0DAE84C0B3C42E0B550E5E9F47A9114D09@qq.com
|
||
Kang Minchul
|
3a07dcf8f5 |
samples/bpf: Fix typo in README
Fix 'cofiguration' typo in BPF samples README. Signed-off-by: Kang Minchul <tegongkang@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20221030180254.34138-1-tegongkang@gmail.com |
||
Daniel Müller
|
2c4d72d66b |
samples/bpf: Fix typos in README
This change fixes some typos found in the BPF samples README file. Signed-off-by: Daniel Müller <deso@posteo.net> Acked-by: David Vernet <void@manifault.com> Link: https://lore.kernel.org/r/20221018163231.1926462-1-deso@posteo.net Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> |
||
Shaomin Deng
|
01dea9548f |
samples/bpf: Fix double word in comments
Remove the repeated word "by" in comments. Signed-off-by: Shaomin Deng <dengshaomin@cdjrlc.com> Link: https://lore.kernel.org/r/20221017142303.8299-1-dengshaomin@cdjrlc.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> |
||
Gerhard Engleder
|
7a698edf95 |
samples/bpf: Fix MAC address swapping in xdp2_kern
xdp2_kern rewrites and forwards packets out on the same interface.
Forwarding still works but rewrite got broken when xdp multibuffer
support has been added.
With xdp multibuffer a local copy of the packet has been introduced. The
MAC address is now swapped in the local copy, but the local copy in not
written back.
Fix MAC address swapping be adding write back of modified packet.
Fixes:
|
||
|
Gerhard Engleder
|
05ee658c65 |
samples/bpf: Fix map iteration in xdp1_user
BPF map iteration in xdp1_user results in endless loop without any
output, because the return value of bpf_map_get_next_key() is checked
against the wrong value.
Other call locations of bpf_map_get_next_key() check for equal 0 for
continuing the iteration. xdp1_user checks against unequal -1. This is
wrong for a function which can return arbitrary negative errno values,
because a return value of e.g. -2 results in an endless loop.
With this fix xdp1_user is printing statistics again:
proto 0: 1 pkt/s
proto 0: 1 pkt/s
proto 17: 107383 pkt/s
proto 17: 881655 pkt/s
proto 17: 882083 pkt/s
proto 17: 881758 pkt/s
Fixes:
|
||
|
Günther Noack
|
faeb919766
|
samples/landlock: Extend sample tool to support LANDLOCK_ACCESS_FS_TRUNCATE
Update the sandboxer sample to restrict truncate actions. This is automatically enabled by default if the running kernel supports LANDLOCK_ACCESS_FS_TRUNCATE, except for the paths listed in the LL_FS_RW environment variable. Signed-off-by: Günther Noack <gnoack3000@gmail.com> Link: https://lore.kernel.org/r/20221018182216.301684-11-gnoack3000@gmail.com Signed-off-by: Mickaël Salaün <mic@digikod.net> |
||
Peter Zijlstra
|
ee3e2469b3 |
x86/ftrace: Make it call depth tracking aware
Since ftrace has trampolines, don't use thunks for the __fentry__ site but instead require that every function called from there includes accounting. This very much includes all the direct-call functions. Additionally, ftrace uses ROP tricks in two places: - return_to_handler(), and - ftrace_regs_caller() when pt_regs->orig_ax is set by a direct-call. return_to_handler() already uses a retpoline to replace an indirect-jump to defeat IBT, since this is a jump-type retpoline, make sure there is no accounting done and ALTERNATIVE the RET into a ret. ftrace_regs_caller() does much the same and gets the same treatment. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20220915111148.927545073@infradead.org |
||
|
Linus Torvalds
|
d3cf405133 |
VFIO updates for v6.1-rc1
- Prune private items from vfio_pci_core.h to a new internal header,
fix missed function rename, and refactor vfio-pci interrupt defines.
(Jason Gunthorpe)
- Create consistent naming and handling of ioctls with a function per
ioctl for vfio-pci and vfio group handling, use proper type args
where available. (Jason Gunthorpe)
- Implement a set of low power device feature ioctls allowing userspace
to make use of power states such as D3cold where supported.
(Abhishek Sahu)
- Remove device counter on vfio groups, which had restricted the page
pinning interface to singleton groups to account for limitations in
the type1 IOMMU backend. Document usage as limited to emulated IOMMU
devices, ie. traditional mdev devices where this restriction is
consistent. (Jason Gunthorpe)
- Correct function prefix in hisi_acc driver incurred during previous
refactoring. (Shameer Kolothum)
- Correct typo and remove redundant warning triggers in vfio-fsl driver.
(Christophe JAILLET)
- Introduce device level DMA dirty tracking uAPI and implementation in
the mlx5 variant driver (Yishai Hadas & Joao Martins)
- Move much of the vfio_device life cycle management into vfio core,
simplifying and avoiding duplication across drivers. This also
facilitates adding a struct device to vfio_device which begins the
introduction of device rather than group level user support and fills
a gap allowing userspace identify devices as vfio capable without
implicit knowledge of the driver. (Kevin Tian & Yi Liu)
- Split vfio container handling to a separate file, creating a more
well defined API between the core and container code, masking IOMMU
backend implementation from the core, allowing for an easier future
transition to an iommufd based implementation of the same.
(Jason Gunthorpe)
- Attempt to resolve race accessing the iommu_group for a device
between vfio releasing DMA ownership and removal of the device from
the IOMMU driver. Follow-up with support to allow vfio_group to
exist with NULL iommu_group pointer to support existing userspace
use cases of holding the group file open. (Jason Gunthorpe)
- Fix error code and hi/lo register manipulation issues in the hisi_acc
variant driver, along with various code cleanups. (Longfang Liu)
- Fix a prior regression in GVT-g group teardown, resulting in
unreleased resources. (Jason Gunthorpe)
- A significant cleanup and simplification of the mdev interface,
consolidating much of the open coded per driver sysfs interface
support into the mdev core. (Christoph Hellwig)
- Simplification of tracking and locking around vfio_groups that
fall out from previous refactoring. (Jason Gunthorpe)
- Replace trivial open coded f_ops tests with new helper.
(Alex Williamson)
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Merge tag 'vfio-v6.1-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Prune private items from vfio_pci_core.h to a new internal header,
fix missed function rename, and refactor vfio-pci interrupt defines
(Jason Gunthorpe)
- Create consistent naming and handling of ioctls with a function per
ioctl for vfio-pci and vfio group handling, use proper type args
where available (Jason Gunthorpe)
- Implement a set of low power device feature ioctls allowing userspace
to make use of power states such as D3cold where supported (Abhishek
Sahu)
- Remove device counter on vfio groups, which had restricted the page
pinning interface to singleton groups to account for limitations in
the type1 IOMMU backend. Document usage as limited to emulated IOMMU
devices, ie. traditional mdev devices where this restriction is
consistent (Jason Gunthorpe)
- Correct function prefix in hisi_acc driver incurred during previous
refactoring (Shameer Kolothum)
- Correct typo and remove redundant warning triggers in vfio-fsl driver
(Christophe JAILLET)
- Introduce device level DMA dirty tracking uAPI and implementation in
the mlx5 variant driver (Yishai Hadas & Joao Martins)
- Move much of the vfio_device life cycle management into vfio core,
simplifying and avoiding duplication across drivers. This also
facilitates adding a struct device to vfio_device which begins the
introduction of device rather than group level user support and fills
a gap allowing userspace identify devices as vfio capable without
implicit knowledge of the driver (Kevin Tian & Yi Liu)
- Split vfio container handling to a separate file, creating a more
well defined API between the core and container code, masking IOMMU
backend implementation from the core, allowing for an easier future
transition to an iommufd based implementation of the same (Jason
Gunthorpe)
- Attempt to resolve race accessing the iommu_group for a device
between vfio releasing DMA ownership and removal of the device from
the IOMMU driver. Follow-up with support to allow vfio_group to exist
with NULL iommu_group pointer to support existing userspace use cases
of holding the group file open (Jason Gunthorpe)
- Fix error code and hi/lo register manipulation issues in the hisi_acc
variant driver, along with various code cleanups (Longfang Liu)
- Fix a prior regression in GVT-g group teardown, resulting in
unreleased resources (Jason Gunthorpe)
- A significant cleanup and simplification of the mdev interface,
consolidating much of the open coded per driver sysfs interface
support into the mdev core (Christoph Hellwig)
- Simplification of tracking and locking around vfio_groups that fall
out from previous refactoring (Jason Gunthorpe)
- Replace trivial open coded f_ops tests with new helper (Alex
Williamson)
* tag 'vfio-v6.1-rc1' of https://github.com/awilliam/linux-vfio: (77 commits)
vfio: More vfio_file_is_group() use cases
vfio: Make the group FD disassociate from the iommu_group
vfio: Hold a reference to the iommu_group in kvm for SPAPR
vfio: Add vfio_file_is_group()
vfio: Change vfio_group->group_rwsem to a mutex
vfio: Remove the vfio_group->users and users_comp
vfio/mdev: add mdev available instance checking to the core
vfio/mdev: consolidate all the description sysfs into the core code
vfio/mdev: consolidate all the available_instance sysfs into the core code
vfio/mdev: consolidate all the name sysfs into the core code
vfio/mdev: consolidate all the device_api sysfs into the core code
vfio/mdev: remove mtype_get_parent_dev
vfio/mdev: remove mdev_parent_dev
vfio/mdev: unexport mdev_bus_type
vfio/mdev: remove mdev_from_dev
vfio/mdev: simplify mdev_type handling
vfio/mdev: embedd struct mdev_parent in the parent data structure
vfio/mdev: make mdev.h standalone includable
drm/i915/gvt: simplify vgpu configuration management
drm/i915/gvt: fix a memory leak in intel_gvt_init_vgpu_types
...
|
||
|
Linus Torvalds
|
cdf072acb5 |
Tracing updates for 6.1:
Major changes:
- Changed location of tracing repo from personal git repo to:
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
- Added Masami Hiramatsu as co-maintainer
- Updated MAINTAINERS file to separate out FTRACE as it is
more than just TRACING.
Minor changes:
- Added Mark Rutland as FTRACE reviewer
- Updated user_events to make it on its way to remove the BROKEN tag.
The changes should now be acceptable but will run it through
a cycle and hopefully we can remove the BROKEN tag next release.
- Added filtering to eprobes
- Added a delta time to the benchmark trace event
- Have the histogram and filter callbacks called via a switch
statement instead of indirect functions. This speeds it up to
avoid retpolines.
- Add a way to wake up ring buffer waiters waiting for the
ring buffer to fill up to its watermark.
- New ioctl() on the trace_pipe_raw file to wake up ring buffer
waiters.
- Wake up waiters when the ring buffer is disabled.
A reader may block when the ring buffer is disabled,
but if it was blocked when the ring buffer is disabled
it should then wake up.
Fixes:
- Allow splice to read partially read ring buffer pages
Fixes splice never moving forward.
- Fix inverted compare that made the "shortest" ring buffer
wait queue actually the longest.
- Fix a race in the ring buffer between resetting a page when
a writer goes to another page, and the reader.
- Fix ftrace accounting bug when function hooks are added at
boot up before the weak functions are set to "disabled".
- Fix bug that freed a user allocated snapshot buffer when
enabling a tracer.
- Fix possible recursive locks in osnoise tracer
- Fix recursive locking direct functions
- And other minor clean ups and fixes
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Merge tag 'trace-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
"Major changes:
- Changed location of tracing repo from personal git repo to:
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
- Added Masami Hiramatsu as co-maintainer
- Updated MAINTAINERS file to separate out FTRACE as it is more than
just TRACING.
Minor changes:
- Added Mark Rutland as FTRACE reviewer
- Updated user_events to make it on its way to remove the BROKEN tag.
The changes should now be acceptable but will run it through a
cycle and hopefully we can remove the BROKEN tag next release.
- Added filtering to eprobes
- Added a delta time to the benchmark trace event
- Have the histogram and filter callbacks called via a switch
statement instead of indirect functions. This speeds it up to avoid
retpolines.
- Add a way to wake up ring buffer waiters waiting for the ring
buffer to fill up to its watermark.
- New ioctl() on the trace_pipe_raw file to wake up ring buffer
waiters.
- Wake up waiters when the ring buffer is disabled. A reader may
block when the ring buffer is disabled, but if it was blocked when
the ring buffer is disabled it should then wake up.
Fixes:
- Allow splice to read partially read ring buffer pages. This fixes
splice never moving forward.
- Fix inverted compare that made the "shortest" ring buffer wait
queue actually the longest.
- Fix a race in the ring buffer between resetting a page when a
writer goes to another page, and the reader.
- Fix ftrace accounting bug when function hooks are added at boot up
before the weak functions are set to "disabled".
- Fix bug that freed a user allocated snapshot buffer when enabling a
tracer.
- Fix possible recursive locks in osnoise tracer
- Fix recursive locking direct functions
- Other minor clean ups and fixes"
* tag 'trace-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (44 commits)
ftrace: Create separate entry in MAINTAINERS for function hooks
tracing: Update MAINTAINERS to reflect new tracing git repo
tracing: Do not free snapshot if tracer is on cmdline
ftrace: Still disable enabled records marked as disabled
tracing/user_events: Move pages/locks into groups to prepare for namespaces
tracing: Add Masami Hiramatsu as co-maintainer
tracing: Remove unused variable 'dups'
MAINTAINERS: add myself as a tracing reviewer
ring-buffer: Fix race between reset page and reading page
tracing/user_events: Update ABI documentation to align to bits vs bytes
tracing/user_events: Use bits vs bytes for enabled status page data
tracing/user_events: Use refcount instead of atomic for ref tracking
tracing/user_events: Ensure user provided strings are safely formatted
tracing/user_events: Use WRITE instead of READ for io vector import
tracing/user_events: Use NULL for strstr checks
tracing: Fix spelling mistake "preapre" -> "prepare"
tracing: Wake up waiters when tracing is disabled
tracing: Add ioctl() to force ring buffer waiters to wake up
tracing: Wake up ring buffer waiters on closing of the file
ring-buffer: Add ring_buffer_wake_waiters()
...
|