- Core code:
- Provide a generic wrapper which can be utilized in drivers to handle
the problem of force threaded demultiplex interrupts on RT enabled
kernels. This avoids conditionals and horrible quirks in drivers all
over the place.
- Fix up affected pinctrl and GPIO drivers to make them cleanly RT safe.
- Interrupt drivers:
- A new driver for the FSL MU platform specific MSI implementation.
- Make irqchip_init() available for pure ACPI based systems.
- Provide a functional DT binding for the Realtek RTL interrupt chip.
- The usual DT updates and small code improvements all over the place.
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Merge tag 'irq-core-2022-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull interrupt updates from Thomas Gleixner:
"Core code:
- Provide a generic wrapper which can be utilized in drivers to
handle the problem of force threaded demultiplex interrupts on RT
enabled kernels. This avoids conditionals and horrible quirks in
drivers all over the place
- Fix up affected pinctrl and GPIO drivers to make them cleanly RT
safe
Interrupt drivers:
- A new driver for the FSL MU platform specific MSI implementation
- Make irqchip_init() available for pure ACPI based systems
- Provide a functional DT binding for the Realtek RTL interrupt chip
- The usual DT updates and small code improvements all over the
place"
* tag 'irq-core-2022-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
irqchip: IMX_MU_MSI should depend on ARCH_MXC
irqchip/imx-mu-msi: Fix wrong register offset for 8ulp
irqchip/ls-extirq: Fix invalid wait context by avoiding to use regmap
dt-bindings: irqchip: Describe the IMX MU block as a MSI controller
irqchip: Add IMX MU MSI controller driver
dt-bindings: irqchip: renesas,irqc: Add r8a779g0 support
irqchip/gic-v3: Fix typo in comment
dt-bindings: interrupt-controller: ti,sci-intr: Fix missing reg property in the binding
dt-bindings: irqchip: ti,sci-inta: Fix warning for missing #interrupt-cells
irqchip: Allow extra fields to be passed to IRQCHIP_PLATFORM_DRIVER_END
platform-msi: Export symbol platform_msi_create_irq_domain()
irqchip/realtek-rtl: use parent interrupts
dt-bindings: interrupt-controller: realtek,rtl-intc: require parents
irqchip/realtek-rtl: use irq_domain_add_linear()
irqchip: Make irqchip_init() usable on pure ACPI systems
bcma: gpio: Use generic_handle_irq_safe()
gpio: mlxbf2: Use generic_handle_irq_safe()
platform/x86: intel_int0002_vgpio: Use generic_handle_irq_safe()
ssb: gpio: Use generic_handle_irq_safe()
pinctrl: amd: Use generic_handle_irq_safe()
...
linux-next for a couple of months without, to my knowledge, any negative
reports (or any positive ones, come to that).
- Also the Maple Tree from Liam R. Howlett. An overlapping range-based
tree for vmas. It it apparently slight more efficient in its own right,
but is mainly targeted at enabling work to reduce mmap_lock contention.
Liam has identified a number of other tree users in the kernel which
could be beneficially onverted to mapletrees.
Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat
(https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com).
This has yet to be addressed due to Liam's unfortunately timed
vacation. He is now back and we'll get this fixed up.
- Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer. It uses
clang-generated instrumentation to detect used-unintialized bugs down to
the single bit level.
KMSAN keeps finding bugs. New ones, as well as the legacy ones.
- Yang Shi adds a userspace mechanism (madvise) to induce a collapse of
memory into THPs.
- Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to support
file/shmem-backed pages.
- userfaultfd updates from Axel Rasmussen
- zsmalloc cleanups from Alexey Romanov
- cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and memory-failure
- Huang Ying adds enhancements to NUMA balancing memory tiering mode's
page promotion, with a new way of detecting hot pages.
- memcg updates from Shakeel Butt: charging optimizations and reduced
memory consumption.
- memcg cleanups from Kairui Song.
- memcg fixes and cleanups from Johannes Weiner.
- Vishal Moola provides more folio conversions
- Zhang Yi removed ll_rw_block() :(
- migration enhancements from Peter Xu
- migration error-path bugfixes from Huang Ying
- Aneesh Kumar added ability for a device driver to alter the memory
tiering promotion paths. For optimizations by PMEM drivers, DRM
drivers, etc.
- vma merging improvements from Jakub Matěn.
- NUMA hinting cleanups from David Hildenbrand.
- xu xin added aditional userspace visibility into KSM merging activity.
- THP & KSM code consolidation from Qi Zheng.
- more folio work from Matthew Wilcox.
- KASAN updates from Andrey Konovalov.
- DAMON cleanups from Kaixu Xia.
- DAMON work from SeongJae Park: fixes, cleanups.
- hugetlb sysfs cleanups from Muchun Song.
- Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core.
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Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in
linux-next for a couple of months without, to my knowledge, any
negative reports (or any positive ones, come to that).
- Also the Maple Tree from Liam Howlett. An overlapping range-based
tree for vmas. It it apparently slightly more efficient in its own
right, but is mainly targeted at enabling work to reduce mmap_lock
contention.
Liam has identified a number of other tree users in the kernel which
could be beneficially onverted to mapletrees.
Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat
at [1]. This has yet to be addressed due to Liam's unfortunately
timed vacation. He is now back and we'll get this fixed up.
- Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer. It uses
clang-generated instrumentation to detect used-unintialized bugs down
to the single bit level.
KMSAN keeps finding bugs. New ones, as well as the legacy ones.
- Yang Shi adds a userspace mechanism (madvise) to induce a collapse of
memory into THPs.
- Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to
support file/shmem-backed pages.
- userfaultfd updates from Axel Rasmussen
- zsmalloc cleanups from Alexey Romanov
- cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and
memory-failure
- Huang Ying adds enhancements to NUMA balancing memory tiering mode's
page promotion, with a new way of detecting hot pages.
- memcg updates from Shakeel Butt: charging optimizations and reduced
memory consumption.
- memcg cleanups from Kairui Song.
- memcg fixes and cleanups from Johannes Weiner.
- Vishal Moola provides more folio conversions
- Zhang Yi removed ll_rw_block() :(
- migration enhancements from Peter Xu
- migration error-path bugfixes from Huang Ying
- Aneesh Kumar added ability for a device driver to alter the memory
tiering promotion paths. For optimizations by PMEM drivers, DRM
drivers, etc.
- vma merging improvements from Jakub Matěn.
- NUMA hinting cleanups from David Hildenbrand.
- xu xin added aditional userspace visibility into KSM merging
activity.
- THP & KSM code consolidation from Qi Zheng.
- more folio work from Matthew Wilcox.
- KASAN updates from Andrey Konovalov.
- DAMON cleanups from Kaixu Xia.
- DAMON work from SeongJae Park: fixes, cleanups.
- hugetlb sysfs cleanups from Muchun Song.
- Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core.
Link: https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com [1]
* tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (555 commits)
hugetlb: allocate vma lock for all sharable vmas
hugetlb: take hugetlb vma_lock when clearing vma_lock->vma pointer
hugetlb: fix vma lock handling during split vma and range unmapping
mglru: mm/vmscan.c: fix imprecise comments
mm/mglru: don't sync disk for each aging cycle
mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol
mm: memcontrol: use do_memsw_account() in a few more places
mm: memcontrol: deprecate swapaccounting=0 mode
mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled
mm/secretmem: remove reduntant return value
mm/hugetlb: add available_huge_pages() func
mm: remove unused inline functions from include/linux/mm_inline.h
selftests/vm: add selftest for MADV_COLLAPSE of uffd-minor memory
selftests/vm: add file/shmem MADV_COLLAPSE selftest for cleared pmd
selftests/vm: add thp collapse shmem testing
selftests/vm: add thp collapse file and tmpfs testing
selftests/vm: modularize thp collapse memory operations
selftests/vm: dedup THP helpers
mm/khugepaged: add tracepoint to hpage_collapse_scan_file()
mm/madvise: add file and shmem support to MADV_COLLAPSE
...
- Add an error message to be printed when a power domain marked as
"always on" is not actually on during initialization (Johan Hovold).
- Extend macros used for defining power management callbacks to allow
conditional exporting of noirq and late/early suspend/resume PM
callbacks (Paul Cercueil).
- Update the turbostat utility:
* Add support for two new platforms (Zhang Rui).
* Adjust energy unit for Sapphire Rapids (Zhang Rui).
* Do not dump TRL if turbo is not supported (Artem Bityutskiy).
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Merge tag 'pm-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These update the turbostat utility, extend the macros used for
defining device power management callbacks and add a diagnostic
message to the generic power domains code.
Specifics:
- Add an error message to be printed when a power domain marked as
"always on" is not actually on during initialization (Johan
Hovold).
- Extend macros used for defining power management callbacks to allow
conditional exporting of noirq and late/early suspend/resume PM
callbacks (Paul Cercueil).
- Update the turbostat utility:
- Add support for two new platforms (Zhang Rui).
- Adjust energy unit for Sapphire Rapids (Zhang Rui).
- Do not dump TRL if turbo is not supported (Artem Bityutskiy)"
* tag 'pm-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
tools/power turbostat: version 2022.10.04
tools/power turbostat: Use standard Energy Unit for SPR Dram RAPL domain
tools/power turbostat: Do not dump TRL if turbo is not supported
tools/power turbostat: Add support for MeteorLake platforms
tools/power turbostat: Add support for RPL-S
PM: Improve EXPORT_*_DEV_PM_OPS macros
PM: domains: log failures to register always-on domains
* Improvements to the CPU topology subsystem, which fix some issues
where RISC-V would report bad topology information.
* The default NR_CPUS has increased to XLEN, and the maximum
configurable value is 512.
* The CD-ROM filesystems have been enabled in the defconfig.
* Support for THP_SWAP has been added for rv64 systems.
There are also a handful of cleanups and fixes throughout the tree.
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Merge tag 'riscv-for-linus-6.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
- Improvements to the CPU topology subsystem, which fix some issues
where RISC-V would report bad topology information.
- The default NR_CPUS has increased to XLEN, and the maximum
configurable value is 512.
- The CD-ROM filesystems have been enabled in the defconfig.
- Support for THP_SWAP has been added for rv64 systems.
There are also a handful of cleanups and fixes throughout the tree.
* tag 'riscv-for-linus-6.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: enable THP_SWAP for RV64
RISC-V: Print SSTC in canonical order
riscv: compat: s/failed/unsupported if compat mode isn't supported
RISC-V: Increase range and default value of NR_CPUS
cpuidle: riscv-sbi: Fix CPU_PM_CPU_IDLE_ENTER_xyz() macro usage
perf: RISC-V: throttle perf events
perf: RISC-V: exclude invalid pmu counters from SBI calls
riscv: enable CD-ROM file systems in defconfig
riscv: topology: fix default topology reporting
arm64: topology: move store_cpu_topology() to shared code
am sending out early due to me travelling next week. There is a
lone mm patch for which Andrew gave an informal ack at
https://lore.kernel.org/linux-mm/20220817102500.440c6d0a3fce296fdf91bea6@linux-foundation.org.
I will send the bulk of ARM work, as well as other
architectures, at the end of next week.
ARM:
* Account stage2 page table allocations in memory stats.
x86:
* Account EPT/NPT arm64 page table allocations in memory stats.
* Tracepoint cleanups/fixes for nested VM-Enter and emulated MSR accesses.
* Drop eVMCS controls filtering for KVM on Hyper-V, all known versions of
Hyper-V now support eVMCS fields associated with features that are
enumerated to the guest.
* Use KVM's sanitized VMCS config as the basis for the values of nested VMX
capabilities MSRs.
* A myriad event/exception fixes and cleanups. Most notably, pending
exceptions morph into VM-Exits earlier, as soon as the exception is
queued, instead of waiting until the next vmentry. This fixed
a longstanding issue where the exceptions would incorrecly become
double-faults instead of triggering a vmexit; the common case of
page-fault vmexits had a special workaround, but now it's fixed
for good.
* A handful of fixes for memory leaks in error paths.
* Cleanups for VMREAD trampoline and VMX's VM-Exit assembly flow.
* Never write to memory from non-sleepable kvm_vcpu_check_block()
* Selftests refinements and cleanups.
* Misc typo cleanups.
Generic:
* remove KVM_REQ_UNHALT
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"The first batch of KVM patches, mostly covering x86.
ARM:
- Account stage2 page table allocations in memory stats
x86:
- Account EPT/NPT arm64 page table allocations in memory stats
- Tracepoint cleanups/fixes for nested VM-Enter and emulated MSR
accesses
- Drop eVMCS controls filtering for KVM on Hyper-V, all known
versions of Hyper-V now support eVMCS fields associated with
features that are enumerated to the guest
- Use KVM's sanitized VMCS config as the basis for the values of
nested VMX capabilities MSRs
- A myriad event/exception fixes and cleanups. Most notably, pending
exceptions morph into VM-Exits earlier, as soon as the exception is
queued, instead of waiting until the next vmentry. This fixed a
longstanding issue where the exceptions would incorrecly become
double-faults instead of triggering a vmexit; the common case of
page-fault vmexits had a special workaround, but now it's fixed for
good
- A handful of fixes for memory leaks in error paths
- Cleanups for VMREAD trampoline and VMX's VM-Exit assembly flow
- Never write to memory from non-sleepable kvm_vcpu_check_block()
- Selftests refinements and cleanups
- Misc typo cleanups
Generic:
- remove KVM_REQ_UNHALT"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (94 commits)
KVM: remove KVM_REQ_UNHALT
KVM: mips, x86: do not rely on KVM_REQ_UNHALT
KVM: x86: never write to memory from kvm_vcpu_check_block()
KVM: x86: Don't snapshot pending INIT/SIPI prior to checking nested events
KVM: nVMX: Make event request on VMXOFF iff INIT/SIPI is pending
KVM: nVMX: Make an event request if INIT or SIPI is pending on VM-Enter
KVM: SVM: Make an event request if INIT or SIPI is pending when GIF is set
KVM: x86: lapic does not have to process INIT if it is blocked
KVM: x86: Rename kvm_apic_has_events() to make it INIT/SIPI specific
KVM: x86: Rename and expose helper to detect if INIT/SIPI are allowed
KVM: nVMX: Make an event request when pending an MTF nested VM-Exit
KVM: x86: make vendor code check for all nested events
mailmap: Update Oliver's email address
KVM: x86: Allow force_emulation_prefix to be written without a reload
KVM: selftests: Add an x86-only test to verify nested exception queueing
KVM: selftests: Use uapi header to get VMX and SVM exit reasons/codes
KVM: x86: Rename inject_pending_events() to kvm_check_and_inject_events()
KVM: VMX: Update MTF and ICEBP comments to document KVM's subtle behavior
KVM: x86: Treat pending TRIPLE_FAULT requests as pending exceptions
KVM: x86: Morph pending exceptions to pending VM-Exits at queue time
...
Here is the big set of driver core and debug printk changes for 6.1-rc1.
Included in here is:
- dynamic debug updates for the core and the drm subsystem. The
drm changes have all been acked by the relevant maintainers.
- kernfs fixes for syzbot reported problems
- kernfs refactors and updates for cgroup requirements
- magic number cleanups and removals from the kernel tree (they
were not being used and they really did not actually do
anything.)
- other tiny cleanups
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the big set of driver core and debug printk changes for
6.1-rc1. Included in here is:
- dynamic debug updates for the core and the drm subsystem. The drm
changes have all been acked by the relevant maintainers
- kernfs fixes for syzbot reported problems
- kernfs refactors and updates for cgroup requirements
- magic number cleanups and removals from the kernel tree (they were
not being used and they really did not actually do anything)
- other tiny cleanups
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (74 commits)
docs: filesystems: sysfs: Make text and code for ->show() consistent
Documentation: NBD_REQUEST_MAGIC isn't a magic number
a.out: restore CMAGIC
device property: Add const qualifier to device_get_match_data() parameter
drm_print: add _ddebug descriptor to drm_*dbg prototypes
drm_print: prefer bare printk KERN_DEBUG on generic fn
drm_print: optimize drm_debug_enabled for jump-label
drm-print: add drm_dbg_driver to improve namespace symmetry
drm-print.h: include dyndbg header
drm_print: wrap drm_*_dbg in dyndbg descriptor factory macro
drm_print: interpose drm_*dbg with forwarding macros
drm: POC drm on dyndbg - use in core, 2 helpers, 3 drivers.
drm_print: condense enum drm_debug_category
debugfs: use DEFINE_SHOW_ATTRIBUTE to define debugfs_regset32_fops
driver core: use IS_ERR_OR_NULL() helper in device_create_groups_vargs()
Documentation: ENI155_MAGIC isn't a magic number
Documentation: NBD_REPLY_MAGIC isn't a magic number
nbd: remove define-only NBD_MAGIC, previously magic number
Documentation: FW_HEADER_MAGIC isn't a magic number
Documentation: EEPROM_MAGIC_VALUE isn't a magic number
...
This has been a busy release for regmap with one thing and other,
there's been an especially large interest in MMIO regmaps for some
reason. The bulk of the changes are cleanups but there are several user
visible changes too:
- Support for I/O ports in regmap-mmio.
- Support for accelerated noinc operations in regmap-mmio.
- Support for tracing the register values in bulk operations.
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Merge tag 'regmap-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"This has been a busy release for regmap with one thing and other,
there's been an especially large interest in MMIO regmaps for some
reason. The bulk of the changes are cleanups but there are several
user visible changes too:
- Support for I/O ports in regmap-mmio
- Support for accelerated noinc operations in regmap-mmio
- Support for tracing the register values in bulk operations"
* tag 'regmap-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: mmio: replace return 0 with break in switch statement
regmap: spi-avmm: Use swabXX_array() helpers
regmap: mmio: Use swabXX_array() helpers
swab: Add array operations
regmap: trace: Remove unneeded blank lines
regmap: trace: Remove explicit castings
regmap: trace: Remove useless check for NULL for bulk ops
regmap: mmio: Fix rebase error
regmap: check right noinc bounds in debug print
regmap: introduce value tracing for regmap bulk operations
regmap/hexagon: Properly fix the generic IO helpers
regmap: mmio: Support accelerared noinc operations
regmap: Support accelerated noinc operations
regmap: Make use of get_unaligned_be24(), put_unaligned_be24()
regmap: mmio: Fix MMIO accessors to avoid talking to IO port
regmap: mmio: Introduce IO accessors that can talk to IO port
regmap: mmio: Get rid of broken 64-bit IO
regmap: mmio: Remove mmio_relaxed member from context
Always-on PM domains must be on during initialisation or the domain is
currently silently rejected.
Print an error message in case an always-on domain is not on to make it
easier to debug drivers getting this wrong (e.g. by setting an always-on
genpd flag without making sure that the state matches).
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- A new driver for the FSL MU widget that provides platform MSI
- An update for the Realtek RTL irqchip to use a DT binding that
actually describes the hardware
- A handful of DT updates, as well as minor code and spelling fixes
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Merge tag 'irqchip-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates from Marc Zyngier:
- A new driver for the FSL MU widget that provides platform MSI
- An update for the Realtek RTL irqchip to use a DT binding that
actually describes the hardware
- A handful of DT updates, as well as minor code and spelling fixes
Link: https://lore.kernel.org/r/20221002125554.3902840-1-maz@kernel.org
The memory-notify-based approach aims to handle meory-less nodes, however,
it just adds the complexity of code as pointed by David in thread [1].
The handling of memory-less nodes is introduced by commit 4faf8d950e
("hugetlb: handle memory hot-plug events"). >From its commit message, we
cannot find any necessity of handling this case. So, we can simply
register/unregister sysfs entries in register_node/unregister_node to
simlify the code.
BTW, hotplug callback added because in hugetlb_register_all_nodes() we
register sysfs nodes only for N_MEMORY nodes, seeing commit 9b5e5d0fdc,
which said it was a preparation for handling memory-less nodes via memory
hotplug. Since we want to remove memory hotplug, so make sure we only
register per-node sysfs for online (N_ONLINE) nodes in
hugetlb_register_all_nodes().
https://lore.kernel.org/linux-mm/60933ffc-b850-976c-78a0-0ee6e0ea9ef0@redhat.com/ [1]
Link: https://lkml.kernel.org/r/20220914072603.60293-3-songmuchun@bytedance.com
Suggested-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "simplify handling of per-node sysfs creation and removal",
v4.
This patch (of 2):
The following commit offload per-node sysfs creation and removal to a
kworker and did not say why it is needed. And it also said "I don't know
that this is absolutely required". It seems like the author was not sure
as well. Since it only complicates the code, this patch will revert the
changes to simplify the code.
39da08cb07 ("hugetlb: offload per node attribute registrations")
We could use memory hotplug notifier to do per-node sysfs creation and
removal instead of inserting those operations to node registration and
unregistration. Then, it can reduce the code coupling between node.c and
hugetlb.c. Also, it can simplify the code.
Link: https://lkml.kernel.org/r/20220914072603.60293-1-songmuchun@bytedance.com
Link: https://lkml.kernel.org/r/20220914072603.60293-2-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
- Add isupport for Tiger Lake in no-HWP mode to intel_pstate (Doug
Smythies).
- Update the AMD P-state driver (Perry Yuan):
* Fix wrong lowest perf fetch.
* Map desired perf into pstate scope for powersave governor.
* Update pstate frequency transition delay time.
* Fix initial highest_perf value.
* Clean up.
- Move max CPU capacity to sugov_policy in the schedutil cpufreq
governor (Lukasz Luba).
- Add SM6115 to cpufreq-dt blocklist (Adam Skladowski).
- Add support for Tegra239 and minor cleanups (Sumit Gupta, ye xingchen,
and Yang Yingliang).
- Add freq qos for qcom cpufreq driver and minor cleanups (Xuewen Yan,
and Viresh Kumar).
- Minor cleanups around functions called at module_init() (Xiu Jianfeng).
- Use module_init and add module_exit for bmips driver (Zhang Jianhua).
- Add AlderLake-N support to intel_idle (Zhang Rui).
- Replace strlcpy() with unused retval with strscpy() in intel_idle
(Wolfram Sang).
- Remove redundant check from cpuidle_switch_governor() (Yu Liao).
- Replace strlcpy() with unused retval with strscpy() in the powernv
cpuidle driver (Wolfram Sang).
- Drop duplicate word from a comment in the coupled cpuidle driver
(Jason Wang).
- Make rpm_resume() return -EINPROGRESS if RPM_NOWAIT is passed to it
in the flags and the device is about to resume (Rafael Wysocki).
- Add extra debugging statement for multiple active IRQs to system
wakeup handling code (Mario Limonciello).
- Replace strlcpy() with unused retval with strscpy() in the core
system suspend support code (Wolfram Sang).
- Update the intel_rapl power capping driver:
* Use standard Energy Unit for SPR Dram RAPL domain (Zhang Rui).
* Add support for RAPTORLAKE_S (Zhang Rui).
* Fix UBSAN shift-out-of-bounds issue (Chao Qin).
- Handle -EPROBE_DEFER when regulator is not probed on
mtk-ci-devfreq.c (AngeloGioacchino Del Regno).
- Fix message typo and use dev_err_probe() in rockchip-dfi.c
(Christophe JAILLET).
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Merge tag 'pm-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These add support for some new hardware, extend the existing hardware
support, fix some issues and clean up code
Specifics:
- Add isupport for Tiger Lake in no-HWP mode to intel_pstate (Doug
Smythies)
- Update the AMD P-state driver (Perry Yuan):
- Fix wrong lowest perf fetch
- Map desired perf into pstate scope for powersave governor
- Update pstate frequency transition delay time
- Fix initial highest_perf value
- Clean up
- Move max CPU capacity to sugov_policy in the schedutil cpufreq
governor (Lukasz Luba)
- Add SM6115 to cpufreq-dt blocklist (Adam Skladowski)
- Add support for Tegra239 and minor cleanups (Sumit Gupta, ye
xingchen, and Yang Yingliang)
- Add freq qos for qcom cpufreq driver and minor cleanups (Xuewen
Yan, and Viresh Kumar)
- Minor cleanups around functions called at module_init() (Xiu
Jianfeng)
- Use module_init and add module_exit for bmips driver (Zhang
Jianhua)
- Add AlderLake-N support to intel_idle (Zhang Rui)
- Replace strlcpy() with unused retval with strscpy() in intel_idle
(Wolfram Sang)
- Remove redundant check from cpuidle_switch_governor() (Yu Liao)
- Replace strlcpy() with unused retval with strscpy() in the powernv
cpuidle driver (Wolfram Sang)
- Drop duplicate word from a comment in the coupled cpuidle driver
(Jason Wang)
- Make rpm_resume() return -EINPROGRESS if RPM_NOWAIT is passed to it
in the flags and the device is about to resume (Rafael Wysocki)
- Add extra debugging statement for multiple active IRQs to system
wakeup handling code (Mario Limonciello)
- Replace strlcpy() with unused retval with strscpy() in the core
system suspend support code (Wolfram Sang)
- Update the intel_rapl power capping driver:
- Use standard Energy Unit for SPR Dram RAPL domain (Zhang Rui).
- Add support for RAPTORLAKE_S (Zhang Rui).
- Fix UBSAN shift-out-of-bounds issue (Chao Qin)
- Handle -EPROBE_DEFER when regulator is not probed on
mtk-ci-devfreq.c (AngeloGioacchino Del Regno)
- Fix message typo and use dev_err_probe() in rockchip-dfi.c
(Christophe JAILLET)"
* tag 'pm-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (29 commits)
cpufreq: qcom-cpufreq-hw: Add cpufreq qos for LMh
cpufreq: Add __init annotation to module init funcs
cpufreq: tegra194: change tegra239_cpufreq_soc to static
PM / devfreq: rockchip-dfi: Fix an error message
PM / devfreq: mtk-cci: Handle sram regulator probe deferral
powercap: intel_rapl: Use standard Energy Unit for SPR Dram RAPL domain
PM: runtime: Return -EINPROGRESS from rpm_resume() in the RPM_NOWAIT case
intel_idle: Add AlderLake-N support
powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue
cpufreq: tegra194: Add support for Tegra239
cpufreq: qcom-cpufreq-hw: Fix uninitialized throttled_freq warning
cpufreq: intel_pstate: Add Tigerlake support in no-HWP mode
powercap: intel_rapl: Add support for RAPTORLAKE_S
cpufreq: amd-pstate: Fix initial highest_perf value
cpuidle: Remove redundant check in cpuidle_switch_governor()
PM: wakeup: Add extra debugging statement for multiple active IRQs
cpufreq: tegra194: Remove the unneeded result variable
PM: suspend: move from strlcpy() with unused retval to strscpy()
intel_idle: move from strlcpy() with unused retval to strscpy()
cpuidle: powernv: move from strlcpy() with unused retval to strscpy()
...
- Reimplement acpi_get_pci_dev() using the list of physical devices
associated with the given ACPI device object (Rafael Wysocki).
- Rename ACPI device object reference counting functions (Rafael
Wysocki).
- Rearrange ACPI device object initialization code (Rafael Wysocki).
- Drop parent field from struct acpi_device (Rafael Wysocki).
- Extend the the int3472-tps68470 driver to support multiple consumers
of a single TPS68470 along with the requisite framework-level
support (Daniel Scally).
- Filter out non-memory resources in is_memory(), add a helper
function to find all memory type resources of an ACPI device object
and use that function in 3 places (Heikki Krogerus).
- Add IRQ override quirks for Asus Vivobook K3402ZA/K3502ZA and ASUS
model S5402ZA (Tamim Khan, Kellen Renshaw).
- Fix acpi_dev_state_d0() kerneldoc (Sakari Ailus).
- Fix up suspend-to-idle support on ASUS Rembrandt laptops (Mario
Limonciello).
- Clean up ACPI platform devices support code (Andy Shevchenko, John
Garry).
- Clean up ACPI bus management code (Andy Shevchenko, ye xingchen).
- Add support for multiple DMA windows with different offsets to the
ACPI device enumeration code and use it on LoongArch (Jianmin Lv).
- Clean up the ACPI LPSS (Intel SoC) driver (Andy Shevchenko).
- Add a quirk for Dell Inspiron 14 2-in-1 for StorageD3Enable (Mario
Limonciello).
- Drop unused dev_fmt() and redundant 'HMAT' prefix from the HMAT
parsing code (Liu Shixin).
- Make ACPI FPDT parsing code avoid calling acpi_os_map_memory() on
invalid physical addresses (Hans de Goede).
- Silence missing-declarations warning related to Apple device
properties management (Lukas Wunner).
- Disable frequency invariance in the CPPC library if registers used
by cppc_get_perf_ctrs() are accessed via PCC (Jeremy Linton).
- Add ACPI disabled check to acpi_cpc_valid() (Perry Yuan).
- Fix Tx acknowledge in the PCC address space handler (Huisong Li).
- Use wait_for_completion_timeout() for PCC mailbox operations (Huisong
Li).
- Release resources on PCC address space setup failure path (Rafael
Mendonca).
- Remove unneeded result variables from APEI code (ye xingchen).
- Print total number of records found during BERT log parsing (Dmitry
Monakhov).
- Drop support for 3 _OSI strings that should not be necessary any
more and update documentation on custom _OSI strings so that adding
new ones is not encouraged any more (Mario Limonciello).
- Drop unneeded result variable from ec_write() (ye xingchen).
- Remove the leftover struct acpi_ac_bl from the ACPI AC driver (Hanjun
Guo).
- Reorder symbols to get rid of a few forward declarations in the ACPI
fan driver (Uwe Kleine-König).
- Add Toshiba Satellite/Portege Z830 ACPI backlight quirk (Arvid
Norlander).
- Add ARM DMA-330 controller to the supported list in the ACPI AMBA
driver (Vijayenthiran Subramaniam).
- Drop references to non-functional 01.org/linux-acpi web site from
MAINTAINERS and Kconfig help texts (Rafael Wysocki).
- Replace strlcpy() with unused retval with strscpy() in the ACPI
support code (Wolfram Sang).
- Do not initialize ret in main() in the pfrut utility (Shi junming).
- Drop useless ACPI DSDT override documentation (Rafael Wysocki).
- Fix a few typos and wording mistakes in the ACPI device enumeration
documentation (Jean Delvare).
- Introduce acpi_dev_uid_to_integer() to convert a _UID string into an
integer value (Andy Shevchenko).
- Use acpi_dev_uid_to_integer() in several places to unify _UID
handling (Andy Shevchenko).
- Drop unused pnpid32_to_pnpid() declaration from PNP code (Gaosheng
Cui).
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Merge tag 'acpi-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"ACPI and PNP updates for 6.1-rc1.
These rearrange the ACPI device object initialization code (to get rid
of a redundant parent pointer from struct acpi_device among other
things), unify the _UID handling, drop support for some _OSI strings
that should not be necessary any more, add new IDs to support more
hardware and some more quirks, fix a few issues and clean up code all
over.
Specifics:
- Reimplement acpi_get_pci_dev() using the list of physical devices
associated with the given ACPI device object (Rafael Wysocki)
- Rename ACPI device object reference counting functions (Rafael
Wysocki)
- Rearrange ACPI device object initialization code (Rafael Wysocki)
- Drop parent field from struct acpi_device (Rafael Wysocki)
- Extend the the int3472-tps68470 driver to support multiple
consumers of a single TPS68470 along with the requisite
framework-level support (Daniel Scally)
- Filter out non-memory resources in is_memory(), add a helper
function to find all memory type resources of an ACPI device object
and use that function in 3 places (Heikki Krogerus)
- Add IRQ override quirks for Asus Vivobook K3402ZA/K3502ZA and ASUS
model S5402ZA (Tamim Khan, Kellen Renshaw)
- Fix acpi_dev_state_d0() kerneldoc (Sakari Ailus)
- Fix up suspend-to-idle support on ASUS Rembrandt laptops (Mario
Limonciello)
- Clean up ACPI platform devices support code (Andy Shevchenko, John
Garry)
- Clean up ACPI bus management code (Andy Shevchenko, ye xingchen)
- Add support for multiple DMA windows with different offsets to the
ACPI device enumeration code and use it on LoongArch (Jianmin Lv)
- Clean up the ACPI LPSS (Intel SoC) driver (Andy Shevchenko)
- Add a quirk for Dell Inspiron 14 2-in-1 for StorageD3Enable (Mario
Limonciello)
- Drop unused dev_fmt() and redundant 'HMAT' prefix from the HMAT
parsing code (Liu Shixin)
- Make ACPI FPDT parsing code avoid calling acpi_os_map_memory() on
invalid physical addresses (Hans de Goede)
- Silence missing-declarations warning related to Apple device
properties management (Lukas Wunner)
- Disable frequency invariance in the CPPC library if registers used
by cppc_get_perf_ctrs() are accessed via PCC (Jeremy Linton)
- Add ACPI disabled check to acpi_cpc_valid() (Perry Yuan)
- Fix Tx acknowledge in the PCC address space handler (Huisong Li)
- Use wait_for_completion_timeout() for PCC mailbox operations
(Huisong Li)
- Release resources on PCC address space setup failure path (Rafael
Mendonca)
- Remove unneeded result variables from APEI code (ye xingchen)
- Print total number of records found during BERT log parsing (Dmitry
Monakhov)
- Drop support for 3 _OSI strings that should not be necessary any
more and update documentation on custom _OSI strings so that adding
new ones is not encouraged any more (Mario Limonciello)
- Drop unneeded result variable from ec_write() (ye xingchen)
- Remove the leftover struct acpi_ac_bl from the ACPI AC driver
(Hanjun Guo)
- Reorder symbols to get rid of a few forward declarations in the
ACPI fan driver (Uwe Kleine-König)
- Add Toshiba Satellite/Portege Z830 ACPI backlight quirk (Arvid
Norlander)
- Add ARM DMA-330 controller to the supported list in the ACPI AMBA
driver (Vijayenthiran Subramaniam)
- Drop references to non-functional 01.org/linux-acpi web site from
MAINTAINERS and Kconfig help texts (Rafael Wysocki)
- Replace strlcpy() with unused retval with strscpy() in the ACPI
support code (Wolfram Sang)
- Do not initialize ret in main() in the pfrut utility (Shi junming)
- Drop useless ACPI DSDT override documentation (Rafael Wysocki)
- Fix a few typos and wording mistakes in the ACPI device enumeration
documentation (Jean Delvare)
- Introduce acpi_dev_uid_to_integer() to convert a _UID string into
an integer value (Andy Shevchenko)
- Use acpi_dev_uid_to_integer() in several places to unify _UID
handling (Andy Shevchenko)
- Drop unused pnpid32_to_pnpid() declaration from PNP code (Gaosheng
Cui)"
* tag 'acpi-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (79 commits)
ACPI: LPSS: Deduplicate skipping device in acpi_lpss_create_device()
ACPI: LPSS: Replace loop with first entry retrieval
ACPI: x86: s2idle: Add another ID to s2idle_dmi_table
ACPI: x86: s2idle: Fix a NULL pointer dereference
MAINTAINERS: Drop records pointing to 01.org/linux-acpi
ACPI: Kconfig: Drop link to https://01.org/linux-acpi
ACPI: docs: Drop useless DSDT override documentation
ACPI: DPTF: Drop stale link from Kconfig help
ACPI: x86: s2idle: Add a quirk for ASUSTeK COMPUTER INC. ROG Flow X13
ACPI: x86: s2idle: Add a quirk for Lenovo Slim 7 Pro 14ARH7
ACPI: x86: s2idle: Add a quirk for ASUS ROG Zephyrus G14
ACPI: x86: s2idle: Add a quirk for ASUS TUF Gaming A17 FA707RE
ACPI: x86: s2idle: Add module parameter to prefer Microsoft GUID
ACPI: x86: s2idle: If a new AMD _HID is missing assume Rembrandt
ACPI: x86: s2idle: Move _HID handling for AMD systems into structures
platform/x86: int3472: Add board data for Surface Go2 IR camera
platform/x86: int3472: Support multiple gpio lookups in board data
platform/x86: int3472: Support multiple clock consumers
ACPI: bus: Add iterator for dependent devices
ACPI: scan: Add acpi_dev_get_next_consumer_dev()
...
Merge cpuidle changes, PM core changes and power capping changes for
6.1-rc1:
- Add AlderLake-N support to intel_idle (Zhang Rui).
- Replace strlcpy() with unused retval with strscpy() in intel_idle
(Wolfram Sang).
- Remove redundant check from cpuidle_switch_governor() (Yu Liao).
- Replace strlcpy() with unused retval with strscpy() in the powernv
cpuidle driver (Wolfram Sang).
- Drop duplicate word from a comment in the coupled cpuidle driver
(Jason Wang).
- Make rpm_resume() return -EINPROGRESS if RPM_NOWAIT is passed to it
in the flags and the device is about to resume (Rafael Wysocki).
- Add extra debugging statement for multiple active IRQs to system
wakeup handling code (Mario Limonciello).
- Replace strlcpy() with unused retval with strscpy() in the core
system suspend support code (Wolfram Sang).
- Update the intel_rapl power capping driver:
* Use standard Energy Unit for SPR Dram RAPL domain (Zhang Rui).
* Add support for RAPTORLAKE_S (Zhang Rui).
* Fix UBSAN shift-out-of-bounds issue (Chao Qin).
* pm-cpuidle:
intel_idle: Add AlderLake-N support
cpuidle: Remove redundant check in cpuidle_switch_governor()
intel_idle: move from strlcpy() with unused retval to strscpy()
cpuidle: powernv: move from strlcpy() with unused retval to strscpy()
cpuidle: coupled: Drop duplicate word from a comment
* pm-core:
PM: runtime: Return -EINPROGRESS from rpm_resume() in the RPM_NOWAIT case
* pm-sleep:
PM: wakeup: Add extra debugging statement for multiple active IRQs
PM: suspend: move from strlcpy() with unused retval to strscpy()
* powercap:
powercap: intel_rapl: Use standard Energy Unit for SPR Dram RAPL domain
powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue
powercap: intel_rapl: Add support for RAPTORLAKE_S
Merge new material related to CPPC, PCC, APEI and OSI strings handling
for 6.1-rc1:
- Disable frequency invariance in the CPPC library if registers used
by cppc_get_perf_ctrs() are accessed via PCC (Jeremy Linton).
- Add ACPI disabled check to acpi_cpc_valid() (Perry Yuan).
- Fix Tx acknowledge in the PCC address space handler (Huisong Li).
- Use wait_for_completion_timeout() for PCC mailbox operations (Huisong
Li).
- Release resources on PCC address space setup failure path (Rafael
Mendonca).
- Remove unneeded result variables from APEI code (ye xingchen).
- Print total number of records found during BERT log parsing (Dmitry
Monakhov).
- Drop support for 3 _OSI strings that should not be necessary any
more and update documentation on custom _OSI strings so that adding
new ones is not encouraged any more (Mario Limonciello).
* acpi-cppc:
ACPI: CPPC: Disable FIE if registers in PCC regions
ACPI: CPPC: Add ACPI disabled check to acpi_cpc_valid()
* acpi-pcc:
ACPI: PCC: Fix Tx acknowledge in the PCC address space handler
ACPI: PCC: replace wait_for_completion()
ACPI: PCC: Release resources on address space setup failure path
* acpi-apei:
ACPI: APEI: Remove unneeded result variables
ACPI: APEI: Add BERT error log footer
* acpi-osi:
ACPI: OSI: Update Documentation on custom _OSI strings
ACPI: OSI: Remove Linux-HPI-Hybrid-Graphics _OSI string
ACPI: OSI: Remove Linux-Lenovo-NV-HDMI-Audio _OSI string
ACPI: OSI: Remove Linux-Dell-Video _OSI string
The prospective callers of rpm_resume() passing RPM_NOWAIT to it may
be confused when it returns 0 without actually resuming the device
which may happen if the device is suspending at the given time and it
will only resume when the suspend in progress has completed. To avoid
that confusion, return -EINPROGRESS from rpm_resume() in that case.
Since none of the current callers passing RPM_NOWAIT to rpm_resume()
check its return value, this change has no functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Add const qualifier to the device_get_match_data() parameter.
Some of the future users may utilize this function without
forcing the type.
All the same, dev_fwnode() may be used with a const qualifier.
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220922135410.49694-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use IS_ERR_OR_NULL() helper in device_create_groups_vargs() to simplify code
and improve readiblity. No functional change.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220914140753.3799982-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In following scenario(diagram), when one thread X running dev_coredumpm()
adds devcd device to the framework which sends uevent notification to
userspace and another thread Y reads this uevent and call to
devcd_data_write() which eventually try to delete the queued timer that
is not initialized/queued yet.
So, debug object reports some warning and in the meantime, timer is
initialized and queued from X path. and from Y path, it gets reinitialized
again and timer->entry.pprev=NULL and try_to_grab_pending() stucks.
To fix this, introduce mutex and a boolean flag to serialize the behaviour.
cpu0(X) cpu1(Y)
dev_coredump() uevent sent to user space
device_add() ======================> user space process Y reads the
uevents writes to devcd fd
which results into writes to
devcd_data_write()
mod_delayed_work()
try_to_grab_pending()
del_timer()
debug_assert_init()
INIT_DELAYED_WORK()
schedule_delayed_work()
debug_object_fixup()
timer_fixup_assert_init()
timer_setup()
do_init_timer()
/*
Above call reinitializes
the timer to
timer->entry.pprev=NULL
and this will be checked
later in timer_pending() call.
*/
timer_pending()
!hlist_unhashed_lockless(&timer->entry)
!h->pprev
/*
del_timer() checks h->pprev and finds
it to be NULL due to which
try_to_grab_pending() stucks.
*/
Link: https://lore.kernel.org/lkml/2e1f81e2-428c-f11f-ce92-eb11048cb271@quicinc.com/
Signed-off-by: Mukesh Ojha <quic_mojha@quicinc.com>
Link: https://lore.kernel.org/r/1663073424-13663-1-git-send-email-quic_mojha@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This merges the driver core changes in 6.0-rc7 into driver-core-next as
they are needed here as well for testing.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Variable min_stride is assigned a value that is never read, fix this by
replacing the return 0 with a break statement. This also makes the case
statement consistent with the other cases in the switch statement.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220922080445.818020-1-colin.i.king@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This reverts commit 71066545b4.
It causes boot problems on some systems, so revert it for now until it
is worked out.
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Saravana Kannan <saravanak@google.com>
Fixes: 71066545b4 ("driver core: Set fw_devlink.strict=1 by default")
Reported-by: Olof Johansson <olof@lixom.net>
Link: https://lore.kernel.org/r/CAOesGMjQHhTUMBGHQcME4JBkZCof2NEQ4gaM1GWFgH40+LN9AQ@mail.gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 6.0-rc5 into driver-core-next
We need the driver core and debugfs changes in this branch.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Directly check state of struct memory_block, no need a single function.
Link: https://lkml.kernel.org/r/20220827112043.187028-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Here are some small driver core and debugfs fixes for 6.0-rc5.
Included in here are:
- multiple attempts to get the arch_topology code to work properly on
non-cluster SMT systems. First attempt caused build breakages in
linux-next and 0-day, second try worked.
- debugfs fixes for a long-suffering memory leak. The pattern of
debugfs_remove(debugfs_lookup(...)) turns out to leak dentries, so
add debugfs_lookup_and_remove() to fix this problem. Also fix up
the scheduler debug code that highlighted this problem. Fixes for
other subsystems will be trickling in over the next few months for
this same issue once the debugfs function is merged.
All of these have been in linux-next since Wednesday with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are some small driver core and debugfs fixes for 6.0-rc5.
Included in here are:
- multiple attempts to get the arch_topology code to work properly on
non-cluster SMT systems. First attempt caused build breakages in
linux-next and 0-day, second try worked.
- debugfs fixes for a long-suffering memory leak. The pattern of
debugfs_remove(debugfs_lookup(...)) turns out to leak dentries, so
add debugfs_lookup_and_remove() to fix this problem. Also fix up
the scheduler debug code that highlighted this problem. Fixes for
other subsystems will be trickling in over the next few months for
this same issue once the debugfs function is merged.
All of these have been in linux-next since Wednesday with no reported
problems"
* tag 'driver-core-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
arch_topology: Make cluster topology span at least SMT CPUs
sched/debug: fix dentry leak in update_sched_domain_debugfs
debugfs: add debugfs_lookup_and_remove()
driver core: fix driver_set_override() issue with empty strings
Revert "arch_topology: Make cluster topology span at least SMT CPUs"
arch_topology: Make cluster topology span at least SMT CPUs
make_class_name has been removed since
commit 39aba963d9 ("driver core: remove CONFIG_SYSFS_DEPRECATED_V2
but keep it for block devices"), so remove it.
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Link: https://lore.kernel.org/r/20220909063337.1146151-1-cuigaosheng1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A fix for how we handle controller constraints on SPI message sizes,
only impacting systems with SPI controllers with very low limits like
the AMD controller used in the Steam Deck.
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Merge tag 'regmap-fix-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fix from Mark Brown:
"A fix for how we handle controller constraints on SPI message sizes,
only impacting systems with SPI controllers with very low limits like
the AMD controller used in the Steam Deck"
* tag 'regmap-fix-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: spi: Reserve space for register address/padding
Currently cpu_clustergroup_mask() will return CPU mask if cluster span more
or the same CPUs as cpu_coregroup_mask(). This will result topology borken
on non-Cluster SMT machines when building with CONFIG_SCHED_CLUSTER=y.
Test with:
qemu-system-aarch64 -enable-kvm -machine virt \
-net none \
-cpu host \
-bios ./QEMU_EFI.fd \
-m 2G \
-smp 48,sockets=2,cores=12,threads=2 \
-kernel $Image \
-initrd $Rootfs \
-nographic
-append "rdinit=init console=ttyAMA0 sched_verbose loglevel=8"
We'll get below error:
[ 3.084568] BUG: arch topology borken
[ 3.084570] the SMT domain not a subset of the CLS domain
Since cluster is a level higher than SMT, fix this by making cluster
spans at least SMT CPUs.
Fixes: bfcc439743 ("arch_topology: Limit span of cpu_clustergroup_mask()")
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Ionela Voinescu <ionela.voinescu@arm.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20220905122615.12946-1-yangyicong@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since we have a few helpers to swab elements of a given size in an array
use them instead of open coded variants.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220831212744.56435-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Since we have a few helpers to swab elements of a given size in an array
use them instead of open coded variants.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220831212744.56435-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
There is a few unneeded blank lines in some of event definitions,
remove them in order to make those definitions consistent with
the rest.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220901132336.33234-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
There is no need to have explicit castings to the same type the
variables are of. Remove the explicit castings.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20220901132336.33234-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
If the buffer pointer is NULL we already are in troubles since
regmap bulk API expects caller to provide valid parameters,
it dereferences that without any checks before we call for
traces.
Moreover, the current code will print garbage in the case of
buffer is NULL and length is not 0.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220901132336.33234-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Python likes to send an empty string for some sysfs files, including the
driver_override field. When commit 23d99baf9d ("PCI: Use
driver_set_override() instead of open-coding") moved the PCI core to use
the driver core function instead of hand-rolling their own handler, this
showed up as a regression from some userspace tools, like DPDK.
Fix this up by actually looking at the length of the string first
instead of trusting that userspace got it correct.
Fixes: 23d99baf9d ("PCI: Use driver_set_override() instead of open-coding")
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: stable <stable@kernel.org>
Reported-by: Stephen Hemminger <stephen@networkplumber.org>
Tested-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220901163734.3583106-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since commit cb1f65c1e1 ("PM: s2idle: ACPI: Fix wakeup interrupts
handling") was introduced the kernel can now handle multiple
simultaneous interrupts during wakeup. Ths uncovered some existing
subtle firmware bugs where multiple IRQs are unintentionally active.
To help with fixing those bugs add an extra message when PM debugging
is enabled that can show the individual IRQs triggered as if a variety
are fired they'll potentially be lost as /sys/power/pm_wakeup_irq only
contains the first one that triggered the wakeup after resume is
complete but all may be needed to demonstrate the whole picture.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215770
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
[ rjw: Added empty line after if () ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This reverts commit 6b66ca0bac as it
breaks the build on some arches as reported by the kernel test robot.
Link: https://lore.kernel.org/r/202209030824.SouwDV5M-lkp@intel.com
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 6b66ca0bac ("arch_topology: Make cluster topology span at least SMT CPUs")
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Ionela Voinescu <ionela.voinescu@arm.com>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently cpu_clustergroup_mask() will return CPU mask if cluster span more
or the same CPUs as cpu_coregroup_mask(). This will result topology borken
on non-Cluster SMT machines when building with CONFIG_SCHED_CLUSTER=y.
Test with:
qemu-system-aarch64 -enable-kvm -machine virt \
-net none \
-cpu host \
-bios ./QEMU_EFI.fd \
-m 2G \
-smp 48,sockets=2,cores=12,threads=2 \
-kernel $Image \
-initrd $Rootfs \
-nographic \
-append "rdinit=init console=ttyAMA0 sched_verbose loglevel=8"
We'll get below error:
[ 3.084568] BUG: arch topology borken
[ 3.084570] the SMT domain not a subset of the CLS domain
Since cluster is a level higher than SMT, fix this by making cluster
spans at least SMT CPUs.
Fixes: bfcc439743 ("arch_topology: Limit span of cpu_clustergroup_mask()")
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Ionela Voinescu <ionela.voinescu@arm.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20220825092007.8129-1-yangyicong@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the gfp flag used for the memory allocation already has __GFP_ZERO,
then there is no need to explicitly clear the "struct devres_node". It is
already zeroed.
This saves a few cycles when using devm_zalloc() and co.
In the case of devres_alloc() (which calls __devres_alloc_node()), the
compiler could remove the test and the memset() because it should be able
to see that the __GFP_ZERO flag is set.
So this would make the code both faster and smaller.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/d255bd871484e63cdd628e819f929e2df59afb02.1658352383.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the case of firmware-upload, an instance of struct fw_upload is
allocated in firmware_upload_register(). This data needs to be freed
in fw_dev_release(). Create a new fw_upload_free() function in
sysfs_upload.c to handle the firmware-upload specific memory frees
and incorporate the missing kfree call for the fw_upload structure.
Fixes: 97730bbb24 ("firmware_loader: Add firmware-upload support")
Cc: stable <stable@kernel.org>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Link: https://lore.kernel.org/r/20220831002518.465274-1-russell.h.weight@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the following code within firmware_upload_unregister(), the call to
device_unregister() could result in the dev_release function freeing the
fw_upload_priv structure before it is dereferenced for the call to
module_put(). This bug was found by the kernel test robot using
CONFIG_KASAN while running the firmware selftests.
device_unregister(&fw_sysfs->dev);
module_put(fw_upload_priv->module);
The problem is fixed by copying fw_upload_priv->module to a local variable
for use when calling device_unregister().
Fixes: 97730bbb24 ("firmware_loader: Add firmware-upload support")
Cc: stable <stable@kernel.org>
Reported-by: kernel test robot <oliver.sang@intel.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Link: https://lore.kernel.org/r/20220829174557.437047-1-russell.h.weight@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Architectures which do not have cacheinfo such as ARM 32-bit would spit
out the following during boot:
Early cacheinfo failed, ret = -2
Treat -ENOENT specifically to silence this error since it means that the
platform does not support reporting its cache information.
Fixes: 3fcbf1c77d ("arch_topology: Fix cache attributes detection in the CPU hotplug path")
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Michael Walle <michael@walle.cc>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220805230736.1562801-1-f.fainelli@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Both __device_attach_driver() and __driver_attach() check the return
code of the bus_type.match() function to see if the device needs to be
added to the deferred probe list. After adding the device to the list,
the logic attempts to bind the device to the driver anyway, as if the
device had matched with the driver, which is not correct.
If __device_attach_driver() detects that the device in question is not
ready to match with a driver on the bus, then it doesn't make sense for
the device to attempt to bind with the current driver or continue
attempting to match with any of the other drivers on the bus. So, update
the logic in __device_attach_driver() to reflect this.
If __driver_attach() detects that a driver tried to match with a device
that is not ready to match yet, then the driver should not attempt to bind
with the device. However, the driver can still attempt to match and bind
with other devices on the bus, as drivers can be bound to multiple
devices. So, update the logic in __driver_attach() to reflect this.
Fixes: 656b8035b0 ("ARM: 8524/1: driver cohandle -EPROBE_DEFER from bus_type.match()")
Cc: stable@vger.kernel.org
Cc: Saravana Kannan <saravanak@google.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Saravana Kannan <saravanak@google.com>
Signed-off-by: Isaac J. Manjarres <isaacmanjarres@google.com>
Link: https://lore.kernel.org/r/20220817184026.3468620-1-isaacmanjarres@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A dangling pointless "ret 0" was left in and some unneeded
whitespace can go too.
Fixes: 81c0386c13 ("regmap: mmio: Support accelerared noinc operations")
Reported-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220831141303.501548-1-linus.walleij@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Make acpi_cpc_valid() check if ACPI is disabled, so that its callers
don't need to check that separately. This will also cause the AMD
pstate driver to refuse to load right away when ACPI is disabled.
Also update the warning message in amd_pstate_init() to mention the
ACPI disabled case for completeness.
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
[ rjw: Subject edits, new changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
We keep track of several kernel memory stats (total kernel memory, page
tables, stack, vmalloc, etc) on multiple levels (global, per-node,
per-memcg, etc). These stats give insights to users to how much memory
is used by the kernel and for what purposes.
Currently, memory used by KVM mmu is not accounted in any of those
kernel memory stats. This patch series accounts the memory pages
used by KVM for page tables in those stats in a new
NR_SECONDARY_PAGETABLE stat. This stat can be later extended to account
for other types of secondary pages tables (e.g. iommu page tables).
KVM has a decent number of large allocations that aren't for page
tables, but for most of them, the number/size of those allocations
scales linearly with either the number of vCPUs or the amount of memory
assigned to the VM. KVM's secondary page table allocations do not scale
linearly, especially when nested virtualization is in use.
From a KVM perspective, NR_SECONDARY_PAGETABLE will scale with KVM's
per-VM pages_{4k,2m,1g} stats unless the guest is doing something
bizarre (e.g. accessing only 4kb chunks of 2mb pages so that KVM is
forced to allocate a large number of page tables even though the guest
isn't accessing that much memory). However, someone would need to either
understand how KVM works to make that connection, or know (or be told) to
go look at KVM's stats if they're running VMs to better decipher the stats.
Furthermore, having NR_PAGETABLE side-by-side with NR_SECONDARY_PAGETABLE
is informative. For example, when backing a VM with THP vs. HugeTLB,
NR_SECONDARY_PAGETABLE is roughly the same, but NR_PAGETABLE is an order
of magnitude higher with THP. So having this stat will at the very least
prove to be useful for understanding tradeoffs between VM backing types,
and likely even steer folks towards potential optimizations.
The original discussion with more details about the rationale:
https://lore.kernel.org/all/87ilqoi77b.wl-maz@kernel.org
This stat will be used by subsequent patches to count KVM mmu
memory usage.
Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Acked-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220823004639.2387269-2-yosryahmed@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
We were using the wrong bound in the debug prints: this
needs to be the number of elements, not the number of bytes,
since we're indexing into an element-size typed array.
Fixes: c20cc099b3 ("regmap: Support accelerated noinc operations")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220823135700.265019-1-linus.walleij@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
