Commit Graph

1104690 Commits

Author SHA1 Message Date
Sudeep Holla
5a01bb8efb arch_topology: Avoid parsing through all the CPUs once a outlier CPU is found
There is no point in looping through all the CPU's physical package
identifier to check if it is valid or not once a CPU which is outside
the topology(i.e. outlier CPU) is found.

Let us just break out of the loop early in such case.

Link: https://lore.kernel.org/r/20220704101605.1318280-16-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:29 +01:00
Sudeep Holla
9eb5e54f87 arch_topology: Check for non-negative value rather than -1 for IDs validity
Instead of just comparing the cpu topology IDs with -1 to check their
validity, improve that by checking for a valid non-negative value.

Link: https://lore.kernel.org/r/20220704101605.1318280-15-sudeep.holla@arm.com
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:29 +01:00
Sudeep Holla
3f8283296b arch_topology: Set thread sibling cpumask only within the cluster
Currently the cluster identifier is not set on the DT based platforms.
The reset or default value is -1 for all the CPUs. Once we assign the
cluster identifier values correctly that may result in getting the thread
siblings wrong as the core identifiers can be same for 2 different CPUs
belonging to 2 different cluster.

So, in order to get the thread sibling cpumasks correct, we need to
update them only if the cores they belong are in the same cluster within
the socket. Let us skip updation of the thread sibling cpumaks if the
cluster identifier doesn't match.

This change won't affect even if the cluster identifiers are not set
currently but will avoid any breakage once we set the same correctly.

Link: https://lore.kernel.org/r/20220704101605.1318280-14-sudeep.holla@arm.com
Tested-by: Gavin Shan <gshan@redhat.com>
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:29 +01:00
Sudeep Holla
5b8dc787ce arch_topology: Drop LLC identifier stash from the CPU topology
Since the cacheinfo LLC information is used directly in arch_topology,
there is no need to parse and store the LLC ID information only for
ACPI systems in the CPU topology.

Remove the redundant LLC ID from the generic CPU arch_topology
information.

Link: https://lore.kernel.org/r/20220704101605.1318280-13-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:29 +01:00
Sudeep Holla
798eb5b4d4 arm64: topology: Remove redundant setting of llc_id in CPU topology
Since the cacheinfo LLC information is used directly in arch_topology,
there is no need to parse and fetch the LLC ID information only for
ACPI systems.

Just drop the redundant parsing and setting of llc_id in CPU topology
from ACPI PPTT.

Link: https://lore.kernel.org/r/20220704101605.1318280-12-sudeep.holla@arm.com
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:29 +01:00
Sudeep Holla
f027db2f9a arch_topology: Use the last level cache information from the cacheinfo
The cacheinfo is now initialised early along with the CPU topology
initialisation. Instead of relying on the LLC ID information parsed
separately only with ACPI PPTT elsewhere, migrate to use the similar
information from the cacheinfo.

This is generic for both DT and ACPI systems. The ACPI LLC ID information
parsed separately can now be removed from arch specific code.

Link: https://lore.kernel.org/r/20220704101605.1318280-11-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:29 +01:00
Sudeep Holla
38db9b9546 arch_topology: Add support to parse and detect cache attributes
Currently ACPI populates just the minimum information about the last
level cache from PPTT in order to feed the same to build sched_domains.
Similar support for DT platforms is not present.

In order to enable the same, the entire cache hierarchy information can
be built as part of CPU topoplogy parsing both on ACPI and DT platforms.

Note that this change builds the cacheinfo early even on ACPI systems,
but the current mechanism of building llc_sibling mask remains unchanged.

Link: https://lore.kernel.org/r/20220704101605.1318280-10-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:28 +01:00
Sudeep Holla
521103134a cacheinfo: Align checks in cache_shared_cpu_map_{setup,remove} for readability
The checks to skip the CPU itself or no cacheinfo case are implemented
bit differently though the effect is exactly same. Just align the
implementation in both cache_shared_cpu_map_{setup,remove} just for
improved readability. No functional change.

Link: https://lore.kernel.org/r/20220704101605.1318280-9-sudeep.holla@arm.com
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:28 +01:00
Sudeep Holla
f16d1becf9 cacheinfo: Use cache identifiers to check if the caches are shared if available
The cache identifiers is an optional property on most of the platforms.
The presence of one must be indicated by the CACHE_ID valid bit in the
attributes.

We can use the cache identifiers provided by the firmware to check if
any two cpus share the same cache instead of relying on the fw_token
generated and set in the OS.

Link: https://lore.kernel.org/r/20220704101605.1318280-8-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:28 +01:00
Sudeep Holla
36bbc5b4ff cacheinfo: Allow early detection and population of cache attributes
Some architecture/platforms may need to setup cache properties very
early in the boot along with other cpu topologies so that all these
information can be used to build sched_domains which is used by the
scheduler.

Allow detect_cache_attributes to be called quite early during the boot.

Link: https://lore.kernel.org/r/20220704101605.1318280-7-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:28 +01:00
Sudeep Holla
cc1cfc47ea cacheinfo: Add support to check if last level cache(LLC) is valid or shared
It is useful to have helper to check if the given two CPUs share last
level cache. We can do that check by comparing fw_token or by comparing
the cache ID. Currently we check just for fw_token as the cache ID is
optional.

This helper can be used to build the llc_sibling during arch specific
topology parsing and feeding information to the sched_domains. This also
helps to get rid of llc_id in the CPU topology as it is sort of duplicate
information.

Also add helper to check if the llc information in cacheinfo is valid
or not.

Link: https://lore.kernel.org/r/20220704101605.1318280-6-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:28 +01:00
Sudeep Holla
9447eb0f15 cacheinfo: Move cache_leaves_are_shared out of CONFIG_OF
cache_leaves_are_shared is already used even with ACPI and PPTT. It
checks if the cache leaves are the shared based on fw_token pointer.
However it is defined conditionally only if CONFIG_OF is enabled which
is wrong.

Move the function cache_leaves_are_shared out of CONFIG_OF and keep it
generic. It also handles the case where both OF and ACPI is not defined.

Link: https://lore.kernel.org/r/20220704101605.1318280-5-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:28 +01:00
Sudeep Holla
b14e8d21f7 cacheinfo: Add helper to access any cache index for a given CPU
The cacheinfo for a given CPU at a given index is used at quite a few
places by fetching the base point for index 0 using the helper
per_cpu_cacheinfo(cpu) and offsetting it by the required index.

Instead, add another helper to fetch the required pointer directly and
use it to simplify and improve readability.

Link: https://lore.kernel.org/r/20220704101605.1318280-4-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:28 +01:00
Sudeep Holla
d4ec840bae cacheinfo: Use of_cpu_device_node_get instead cpu_dev->of_node
The of_cpu_device_node_get takes care of fetching the CPU'd device node
either from cached cpu_dev->of_node if cpu_dev is initialised or uses
of_get_cpu_node to parse and fetch node if cpu_dev isn't available yet.

Just use of_cpu_device_node_get instead of getting the cpu device first
and then using cpu_dev->of_node for two reasons:
1. There is no other use of cpu_dev and can be simplified
2. It enabled the use detect_cache_attributes and hence cache_setup_of_node
   much earlier before the CPUs are registered as devices.

Link: https://lore.kernel.org/r/20220704101605.1318280-3-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:27 +01:00
Sudeep Holla
0d4c331af4 ACPI: PPTT: Use table offset as fw_token instead of virtual address
There is need to use the cache sharing information quite early during
the boot before the secondary cores are up and running. The permanent
memory map for all the ACPI tables(via acpi_permanent_mmap) is turned
on in acpi_early_init() which is quite late for the above requirement.

As a result there is possibility that the ACPI PPTT gets mapped to
different virtual addresses. In such scenarios, using virtual address as
fw_token before the acpi_permanent_mmap is enabled results in different
fw_token for the same cache entity and hence wrong cache sharing
information will be deduced based on the same.

Instead of using virtual address, just use the table offset as the
unique firmware token for the caches. The same offset is used as
ACPI identifiers if the firmware has not set a valid one for other
entries in the ACPI PPTT.

Link: https://lore.kernel.org/r/20220704101605.1318280-2-sudeep.holla@arm.com
Cc: linux-acpi@vger.kernel.org
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2022-07-04 16:22:27 +01:00
Linus Torvalds
f2906aa863 Linux 5.19-rc1 2022-06-05 17:18:54 -07:00
Linus Torvalds
6684cf4290 fix for breakage in #work.fd this window
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-work.fd-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull file descriptor fix from Al Viro:
 "Fix for breakage in #work.fd this window"

* tag 'pull-work.fd-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix the breakage in close_fd_get_file() calling conventions change
2022-06-05 17:14:03 -07:00
Linus Torvalds
815b196c70 Hot fixes for 5.19-rc1.
- fixes for material merged during this merge window
 
 - cc:stable fixes for more longstanding issues
 
 - minor mailmap and MAINTAINERS updates
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Merge tag 'mm-hotfixes-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull mm hotfixes from Andrew Morton:
 "Fixups for various recently-added and longer-term issues and a few
  minor tweaks:

   - fixes for material merged during this merge window

   - cc:stable fixes for more longstanding issues

   - minor mailmap and MAINTAINERS updates"

* tag 'mm-hotfixes-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/oom_kill.c: fix vm_oom_kill_table[] ifdeffery
  x86/kexec: fix memory leak of elf header buffer
  mm/memremap: fix missing call to untrack_pfn() in pagemap_range()
  mm: page_isolation: use compound_nr() correctly in isolate_single_pageblock()
  mm: hugetlb_vmemmap: fix CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON
  MAINTAINERS: add maintainer information for z3fold
  mailmap: update Josh Poimboeuf's email
2022-06-05 17:05:38 -07:00
Linus Torvalds
e17fee8976 A single featurelet for delay accounting. Delayed a bit
because,unusually, it has dependencies on both the mm-stable and
 mm-nonmm-stable queues.
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Merge tag 'mm-nonmm-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull delay-accounting update from Andrew Morton:
 "A single featurette for delay accounting.

  Delayed a bit because, unusually, it had dependencies on both the
  mm-stable and mm-nonmm-stable queues"

* tag 'mm-nonmm-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  delayacct: track delays from write-protect copy
2022-06-05 16:58:27 -07:00
Linus Torvalds
e1cff7002b bluetooth: don't use bitmaps for random flag accesses
The bluetooth code uses our bitmap infrastructure for the two bits (!)
of connection setup flags, and in the process causes odd problems when
it converts between a bitmap and just the regular values of said bits.

It's completely pointless to do things like bitmap_to_arr32() to convert
a bitmap into a u32.  It shoudln't have been a bitmap in the first
place.  The reason to use bitmaps is if you have arbitrary number of
bits you want to manage (not two!), or if you rely on the atomicity
guarantees of the bitmap setting and clearing.

The code could use an "atomic_t" and use "atomic_or/andnot()" to set and
clear the bit values, but considering that it then copies the bitmaps
around with "bitmap_to_arr32()" and friends, there clearly cannot be a
lot of atomicity requirements.

So just use a regular integer.

In the process, this avoids the warnings about erroneous use of
bitmap_from_u64() which were triggered on 32-bit architectures when
conversion from a u64 would access two words (and, surprise, surprise,
only one word is needed - and indeed overkill - for a 2-bit bitmap).

That was always problematic, but the compiler seems to notice it and
warn about the invalid pattern only after commit 0a97953fd2 ("lib: add
bitmap_{from,to}_arr64") changed the exact implementation details of
'bitmap_from_u64()', as reported by Sudip Mukherjee and Stephen Rothwell.

Fixes: fe92ee6425 ("Bluetooth: hci_core: Rework hci_conn_params flags")
Link: https://lore.kernel.org/all/YpyJ9qTNHJzz0FHY@debian/
Link: https://lore.kernel.org/all/20220606080631.0c3014f2@canb.auug.org.au/
Link: https://lore.kernel.org/all/20220605162537.1604762-1-yury.norov@gmail.com/
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Cc: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-06-05 16:28:41 -07:00
Al Viro
40a1926022 fix the breakage in close_fd_get_file() calling conventions change
It used to grab an extra reference to struct file rather than
just transferring to caller the one it had removed from descriptor
table.  New variant doesn't, and callers need to be adjusted.

Reported-and-tested-by: syzbot+47dd250f527cb7bebf24@syzkaller.appspotmail.com
Fixes: 6319194ec5 ("Unify the primitives for file descriptor closing")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2022-06-05 15:03:03 -04:00
Linus Torvalds
d717180e7f A single fix for x86/SGX to prevent that memory which is allocated for an
SGX enclave is accounted to the wrong memory control group.
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Merge tag 'x86-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 SGX fix from Thomas Gleixner:
 "A single fix for x86/SGX to prevent that memory which is allocated for
  an SGX enclave is accounted to the wrong memory control group"

* tag 'x86-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sgx: Set active memcg prior to shmem allocation
2022-06-05 11:00:43 -07:00
Linus Torvalds
0b7da15c21 Use PAGE_ALIGNED() instead of open coding it in the x86/mm code.
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Merge tag 'x86-mm-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 mm cleanup from Thomas Gleixner:
 "Use PAGE_ALIGNED() instead of open coding it in the x86/mm code"

* tag 'x86-mm-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Use PAGE_ALIGNED(x) instead of IS_ALIGNED(x, PAGE_SIZE)
2022-06-05 10:57:35 -07:00
Linus Torvalds
9784edd73a X86 microcode updates:
- Disable late microcode loading by default. Unless the HW people get
     their act together and provide a required minimum version in the
     microcode header for making a halfways informed decision its just
     lottery and broken.
 
   - Warn and taint the kernel when microcode is loaded late
 
   - Remove the old unused microcode loader interface
 
   - Remove a redundant perf callback from the microcode loader
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Merge tag 'x86-microcode-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 microcode updates from Thomas Gleixner:

 - Disable late microcode loading by default. Unless the HW people get
   their act together and provide a required minimum version in the
   microcode header for making a halfways informed decision its just
   lottery and broken.

 - Warn and taint the kernel when microcode is loaded late

 - Remove the old unused microcode loader interface

 - Remove a redundant perf callback from the microcode loader

* tag 'x86-microcode-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode: Remove unnecessary perf callback
  x86/microcode: Taint and warn on late loading
  x86/microcode: Default-disable late loading
  x86/microcode: Rip out the OLD_INTERFACE
2022-06-05 10:55:23 -07:00
Linus Torvalds
a925128092 A set of small x86 cleanups:
- Remove unused headers in the IDT code
 
   - Kconfig indendation and comment fixes
 
   - Fix all 'the the' typos in one go instead of waiting for bots to fix
     one at a time.
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Merge tag 'x86-cleanups-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cleanups from Thomas Gleixner:
 "A set of small x86 cleanups:

   - Remove unused headers in the IDT code

   - Kconfig indendation and comment fixes

   - Fix all 'the the' typos in one go instead of waiting for bots to
     fix one at a time"

* tag 'x86-cleanups-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Fix all occurences of the "the the" typo
  x86/idt: Remove unused headers
  x86/Kconfig: Fix indentation of arch/x86/Kconfig.debug
  x86/Kconfig: Fix indentation and add endif comments to arch/x86/Kconfig
2022-06-05 10:53:41 -07:00
Linus Torvalds
1fd9f4ce84 Use strlcpy() instead of strscpy() in arch_setup()
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Merge tag 'x86-boot-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 boot update from Thomas Gleixner:
 "Use strlcpy() instead of strscpy() in arch_setup()"

* tag 'x86-boot-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/setup: Use strscpy() to replace deprecated strlcpy()
2022-06-05 10:49:42 -07:00
Linus Torvalds
c049ecc523 Clockevent/clocksource updates:
- Device tree bindings for MT8186
 
    - Tell the kernel that the RISC-V SBI timer stops in deeper power states
 
    - Make device tree parsing in sp804 more robust
 
    - Dead code removal and tiny fixes here and there
 
    - Add the missing SPDX identifiers
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Merge tag 'timers-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull clockevent/clocksource updates from Thomas Gleixner:

 - Device tree bindings for MT8186

 - Tell the kernel that the RISC-V SBI timer stops in deeper power
   states

 - Make device tree parsing in sp804 more robust

 - Dead code removal and tiny fixes here and there

 - Add the missing SPDX identifiers

* tag 'timers-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/oxnas-rps: Fix irq_of_parse_and_map() return value
  clocksource/drivers/timer-ti-dm: Remove unnecessary NULL check
  clocksource/drivers/timer-sun5i: Convert to SPDX identifier
  clocksource/drivers/timer-sun4i: Convert to SPDX identifier
  clocksource/drivers/pistachio: Convert to SPDX identifier
  clocksource/drivers/orion: Convert to SPDX identifier
  clocksource/drivers/lpc32xx: Convert to SPDX identifier
  clocksource/drivers/digicolor: Convert to SPDX identifier
  clocksource/drivers/armada-370-xp: Convert to SPDX identifier
  clocksource/drivers/mips-gic-timer: Convert to SPDX identifier
  clocksource/drivers/jcore: Convert to SPDX identifier
  clocksource/drivers/bcm_kona: Convert to SPDX identifier
  clocksource/drivers/sp804: Avoid error on multiple instances
  clocksource/drivers/riscv: Events are stopped during CPU suspend
  clocksource/drivers/ixp4xx: Drop boardfile probe path
  dt-bindings: timer: Add compatible for Mediatek MT8186
2022-06-05 10:47:06 -07:00
Linus Torvalds
bc1e02c3e5 Fix the fallout of sysctl code move which placed the init function wrong.
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Merge tag 'sched-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Thomas Gleixner:
 "Fix the fallout of sysctl code move which placed the init function
  wrong"

* tag 'sched-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/autogroup: Fix sysctl move
2022-06-05 10:42:40 -07:00
Linus Torvalds
fa11c28046 Two small perf updates:
- Make the ICL event constraints match reality
 
   - Remove a unused local variable
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Merge tag 'perf-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:

  - Make the ICL event constraints match reality

  - Remove a unused local variable

* tag 'perf-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Remove unused local variable
  perf/x86/intel: Fix event constraints for ICL
2022-06-05 10:40:31 -07:00
Linus Torvalds
5cc47d4a92 Trivial indentation fix in Kconfig
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Merge tag 'perf-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixlet from Thomas Gleixner:
 "Trivial indentation fix in Kconfig"

* tag 'perf-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/Kconfig: Fix indentation in the Kconfig file
2022-06-05 10:39:20 -07:00
Linus Torvalds
44688ffd11 A set of objtool fixes:
- Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
     noreturn.
 
   - Allow architectures to select uaccess validation
 
   - Use the non-instrumented bit test for test_cpu_has() to prevent escape
     from non-instrumentable regions.
 
   - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
     from non-instrumentable regions.
 
   - Mark a few tiny inline as __always_inline to prevent GCC from bringing
     them out of line and instrumenting them.
 
   - Mark the empty stub context_tracking_enabled() as always inline as GCC
     brings them out of line and instruments the empty shell.
 
   - Annotate ex_handler_msr_mce() as dead end
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Merge tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fixes from Thomas Gleixner:

 - Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
   noreturn

 - Allow architectures to select uaccess validation

 - Use the non-instrumented bit test for test_cpu_has() to prevent
   escape from non-instrumentable regions

 - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
   from non-instrumentable regions

 - Mark a few tiny inline as __always_inline to prevent GCC from
   bringing them out of line and instrumenting them

 - Mark the empty stub context_tracking_enabled() as always inline as
   GCC brings them out of line and instruments the empty shell

 - Annotate ex_handler_msr_mce() as dead end

* tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/extable: Annotate ex_handler_msr_mce() as a dead end
  context_tracking: Always inline empty stubs
  x86: Always inline on_thread_stack() and current_top_of_stack()
  jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds
  x86/cpu: Elide KCSAN for cpu_has() and friends
  objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn
  objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
2022-06-05 09:45:27 -07:00
Linus Torvalds
b2c9a83d26 SCSI misc on 20220604
Mostly small bug fixes plus other trivial updates.  The major change
 of note is moving ufs out of scsi and a minor update to lpfc vmid
 handling.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "Mostly small bug fixes plus other trivial updates.

  The major change of note is moving ufs out of scsi and a minor update
  to lpfc vmid handling"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits)
  scsi: qla2xxx: Remove unused 'ql_dm_tgt_ex_pct' parameter
  scsi: qla2xxx: Remove setting of 'req' and 'rsp' parameters
  scsi: mpi3mr: Fix kernel-doc
  scsi: lpfc: Add support for ATTO Fibre Channel devices
  scsi: core: Return BLK_STS_TRANSPORT for ALUA transitioning
  scsi: sd_zbc: Prevent zone information memory leak
  scsi: sd: Fix potential NULL pointer dereference
  scsi: mpi3mr: Rework mrioc->bsg_device model to fix warnings
  scsi: myrb: Fix up null pointer access on myrb_cleanup()
  scsi: core: Unexport scsi_bus_type
  scsi: sd: Don't call blk_cleanup_disk() in sd_probe()
  scsi: ufs: ufshcd: Delete unnecessary NULL check
  scsi: isci: Fix typo in comment
  scsi: pmcraid: Fix typo in comment
  scsi: smartpqi: Fix typo in comment
  scsi: qedf: Fix typo in comment
  scsi: esas2r: Fix typo in comment
  scsi: storvsc: Fix typo in comment
  scsi: ufs: Split the drivers/scsi/ufs directory
  scsi: qla1280: Remove redundant variable
  ...
2022-06-05 09:25:12 -07:00
Linus Torvalds
2981436374 hte: New subsystem for v5.19-rc1
This contains the new HTE subsystem that has been in the works for a
 couple of months now. The infrastructure provided allows for drivers to
 register as hardware timestamp providers, while consumers will be able
 to request events that they are interested in (such as GPIOs and IRQs)
 to be timestamped by the hardware providers.
 
 Note that this currently supports only one provider, but there seems to
 be enough interest in this functionality and we expect to see more
 drivers added once this is merged.
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Merge tag 'hte/for-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux

Pull hardware timestamping subsystem from Thierry Reding:
 "This contains the new HTE (hardware timestamping engine) subsystem
  that has been in the works for a couple of months now.

  The infrastructure provided allows for drivers to register as hardware
  timestamp providers, while consumers will be able to request events
  that they are interested in (such as GPIOs and IRQs) to be timestamped
  by the hardware providers.

  Note that this currently supports only one provider, but there seems
  to be enough interest in this functionality and we expect to see more
  drivers added once this is merged"

[ Linus Walleij mentions the Intel PMC in the Elkhart and Tiger Lake
  platforms as another future timestamp provider ]

* tag 'hte/for-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  dt-bindings: timestamp: Correct id path
  dt-bindings: Renamed hte directory to timestamp
  hte: Uninitialized variable in hte_ts_get()
  hte: Fix off by one in hte_push_ts_ns()
  hte: Fix possible use-after-free in tegra_hte_test_remove()
  hte: Remove unused including <linux/version.h>
  MAINTAINERS: Add HTE Subsystem
  hte: Add Tegra HTE test driver
  tools: gpio: Add new hardware clock type
  gpiolib: cdev: Add hardware timestamp clock type
  gpio: tegra186: Add HTE support
  gpiolib: Add HTE support
  dt-bindings: Add HTE bindings
  hte: Add Tegra194 HTE kernel provider
  drivers: Add hardware timestamp engine (HTE) subsystem
  Documentation: Add HTE subsystem guide
2022-06-05 09:12:28 -07:00
Linus Torvalds
71e80720db Kbuild updates for v5.19 (2nd)
- Fix build regressions for parisc, csky, nios2, openrisc
 
  - Simplify module builds for CONFIG_LTO_CLANG and CONFIG_X86_KERNEL_IBT
 
  - Remove arch/parisc/nm, which was presumably a workaround for old tools
 
  - Check the odd combination of EXPORT_SYMBOL and 'static' precisely
 
  - Make external module builds robust against "too long argument error"
 
  - Support j, k keys for moving the cursor in nconfig
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Merge tag 'kbuild-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - Fix build regressions for parisc, csky, nios2, openrisc

 - Simplify module builds for CONFIG_LTO_CLANG and CONFIG_X86_KERNEL_IBT

 - Remove arch/parisc/nm, which was presumably a workaround for old
   tools

 - Check the odd combination of EXPORT_SYMBOL and 'static' precisely

 - Make external module builds robust against "too long argument error"

 - Support j, k keys for moving the cursor in nconfig

* tag 'kbuild-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
  kbuild: Allow to select bash in a modified environment
  scripts: kconfig: nconf: make nconfig accept jk keybindings
  modpost: use fnmatch() to simplify match()
  modpost: simplify mod->name allocation
  kbuild: factor out the common objtool arguments
  kbuild: move vmlinux.o link to scripts/Makefile.vmlinux_o
  kbuild: clean .tmp_* pattern by make clean
  kbuild: remove redundant cleanups in scripts/link-vmlinux.sh
  kbuild: rebuild multi-object modules when objtool is updated
  kbuild: add cmd_and_savecmd macro
  kbuild: make *.mod rule robust against too long argument error
  kbuild: make built-in.a rule robust against too long argument error
  kbuild: check static EXPORT_SYMBOL* by script instead of modpost
  parisc: remove arch/parisc/nm
  kbuild: do not create *.prelink.o for Clang LTO or IBT
  kbuild: replace $(linked-object) with CONFIG options
  kbuild: do not try to parse *.cmd files for objects provided by compiler
  kbuild: replace $(if A,A,B) with $(or A,B) in scripts/Makefile.modpost
  modpost: squash if...else-if in find_elf_symbol2()
  modpost: reuse ARRAY_SIZE() macro for section_mismatch()
  ...
2022-06-05 09:06:03 -07:00
Linus Torvalds
952923ddc0 Several cleanups in fs/namei.c.
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Merge tag 'pull-18-rc1-work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs pathname updates from Al Viro:
 "Several cleanups in fs/namei.c"

* tag 'pull-18-rc1-work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  namei: cleanup double word in comment
  get rid of dead code in legitimize_root()
  fs/namei.c:reserve_stack(): tidy up the call of try_to_unlazy()
2022-06-04 19:07:15 -07:00
Linus Torvalds
cbd76edeab Cleanups (and one fix) around struct mount handling.
The fix is usermode_driver.c one - once you've done kern_mount(), you
 must kern_unmount(); simple mntput() will end up with a leak.  Several
 failure exits in there messed up that way...  In practice you won't
 hit those particular failure exits without fault injection, though.
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Merge tag 'pull-18-rc1-work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull mount handling updates from Al Viro:
 "Cleanups (and one fix) around struct mount handling.

  The fix is usermode_driver.c one - once you've done kern_mount(), you
  must kern_unmount(); simple mntput() will end up with a leak. Several
  failure exits in there messed up that way... In practice you won't hit
  those particular failure exits without fault injection, though"

* tag 'pull-18-rc1-work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  move mount-related externs from fs.h to mount.h
  blob_to_mnt(): kern_unmount() is needed to undo kern_mount()
  m->mnt_root->d_inode->i_sb is a weird way to spell m->mnt_sb...
  linux/mount.h: trim includes
  uninline may_mount() and don't opencode it in fspick(2)/fsopen(2)
2022-06-04 19:00:05 -07:00
Linus Torvalds
dbe0ee4661 Descriptor handling cleanups
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Merge tag 'pull-18-rc1-work.fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull file descriptor updates from Al Viro.

 - Descriptor handling cleanups

* tag 'pull-18-rc1-work.fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  Unify the primitives for file descriptor closing
  fs: remove fget_many and fput_many interface
  io_uring_enter(): don't leave f.flags uninitialized
2022-06-04 18:52:00 -07:00
Linus Torvalds
d66016c5cd Nine cifs/smb3 client fixes. Includes DFS fixes, some cleanup of leagcy SMB1 code, duplicated message cleanup and a double free and deadlock fix
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Merge tag '5.19-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs client fixes from Steve French:
 "Nine cifs/smb3 client fixes.

  Includes DFS fixes, some cleanup of leagcy SMB1 code, duplicated
  message cleanup and a double free and deadlock fix"

* tag '5.19-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix uninitialized pointer in error case in dfs_cache_get_tgt_share
  cifs: skip trailing separators of prefix paths
  cifs: update internal module number
  cifs: version operations for smb20 unneeded when legacy support disabled
  cifs: do not build smb1ops if legacy support is disabled
  cifs: fix potential deadlock in direct reclaim
  cifs: when extending a file with falloc we should make files not-sparse
  cifs: remove repeated debug message on cifs_put_smb_ses()
  cifs: fix potential double free during failed mount
2022-06-04 17:42:33 -07:00
Schspa Shi
42ce60aa5a kbuild: Allow to select bash in a modified environment
This fixes the build error when the system has a default bash version
which is too old to support associative array variables.

The build error log as fellowing:
linux/scripts/check-local-export: line 11: declare: -A: invalid option
declare: usage: declare [-afFirtx] [-p] [name[=value] ...]

Signed-off-by: Schspa Shi <schspa@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05 06:20:58 +09:00
Isak Ellmer
2bbb486162 scripts: kconfig: nconf: make nconfig accept jk keybindings
Make nconfig accept jk keybindings for movement in addition to arrow
keys.

Signed-off-by: Isak Ellmer <isak01@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05 06:20:57 +09:00
Masahiro Yamada
a89227d769 modpost: use fnmatch() to simplify match()
Replace the own implementation for wildcard (glob) matching with
a function call to fnmatch().

Also, change the return type to 'bool'.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05 06:20:57 +09:00
Masahiro Yamada
8c9ce89c5b modpost: simplify mod->name allocation
mod->name is set to the ELF filename with the suffix ".o" stripped.

The current code calls strdup() and free() to manipulate the string,
but a simpler approach is to pass new_module() with the name length
subtracted by 2.

Also, check if the passed filename ends with ".o" before stripping it.

The current code blindly chops the suffix:

    tmp[strlen(tmp) - 2] = '\0'

It will cause buffer under-run if strlen(tmp) < 2;

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-06-05 06:20:57 +09:00
Masahiro Yamada
b42d230650 kbuild: factor out the common objtool arguments
scripts/Makefile.build and scripts/link-vmlinux.sh have similar setups
for the objtool arguments.

It was difficult to factor out them because all the vmlinux build rules
were written in a shell script. It is somewhat tedious to touch the two
files every time a new objtool option is supported.

To reduce the code duplication, move the objtool for vmlinux.o into
scripts/Makefile.vmlinux_o. Then, move the common macros to Makefile.lib
so they are shared between Makefile.build and Makefile.vmlinux_o.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-05 06:20:57 +09:00
Masahiro Yamada
5d45950dfb kbuild: move vmlinux.o link to scripts/Makefile.vmlinux_o
This is a preparation for moving the objtool rule in the next commit.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-05 06:20:57 +09:00
Masahiro Yamada
b0d6207bad kbuild: clean .tmp_* pattern by make clean
Change the "make clean" rule to remove all the .tmp_* files.

.tmp_objdiff is the only exception, which should be removed by
"make mrproper".

Rename the record directory of objdiff, .tmp_objdiff to .objdiff to
avoid the removal by "make clean".

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-05 06:20:57 +09:00
Linus Torvalds
d0e60d46bc Bitmap patches for 5.19-rc1
This series includes the following patchsets:
  - bitmap: optimize bitmap_weight() usage(w/o bitmap_weight_cmp), from me;
  - lib/bitmap.c make bitmap_print_bitmask_to_buf parseable, from Mauro
    Carvalho Chehab;
  - include/linux/find: Fix documentation, from Anna-Maria Behnsen;
  - bitmap: fix conversion from/to fix-sized arrays, from me;
  - bitmap: Fix return values to be unsigned, from Kees Cook.
 
 It has been in linux-next for at least a week with no problems.
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Merge tag 'bitmap-for-5.19-rc1' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:

 - bitmap: optimize bitmap_weight() usage, from me

 - lib/bitmap.c make bitmap_print_bitmask_to_buf parseable, from Mauro
   Carvalho Chehab

 - include/linux/find: Fix documentation, from Anna-Maria Behnsen

 - bitmap: fix conversion from/to fix-sized arrays, from me

 - bitmap: Fix return values to be unsigned, from Kees Cook

It has been in linux-next for at least a week with no problems.

* tag 'bitmap-for-5.19-rc1' of https://github.com/norov/linux: (31 commits)
  nodemask: Fix return values to be unsigned
  bitmap: Fix return values to be unsigned
  KVM: x86: hyper-v: replace bitmap_weight() with hweight64()
  KVM: x86: hyper-v: fix type of valid_bank_mask
  ia64: cleanup remove_siblinginfo()
  drm/amd/pm: use bitmap_{from,to}_arr32 where appropriate
  KVM: s390: replace bitmap_copy with bitmap_{from,to}_arr64 where appropriate
  lib/bitmap: add test for bitmap_{from,to}_arr64
  lib: add bitmap_{from,to}_arr64
  lib/bitmap: extend comment for bitmap_(from,to)_arr32()
  include/linux/find: Fix documentation
  lib/bitmap.c make bitmap_print_bitmask_to_buf parseable
  MAINTAINERS: add cpumask and nodemask files to BITMAP_API
  arch/x86: replace nodes_weight with nodes_empty where appropriate
  mm/vmstat: replace cpumask_weight with cpumask_empty where appropriate
  clocksource: replace cpumask_weight with cpumask_empty in clocksource.c
  genirq/affinity: replace cpumask_weight with cpumask_empty where appropriate
  irq: mips: replace cpumask_weight with cpumask_empty where appropriate
  drm/i915/pmu: replace cpumask_weight with cpumask_empty where appropriate
  arch/x86: replace cpumask_weight with cpumask_empty where appropriate
  ...
2022-06-04 14:04:27 -07:00
Linus Torvalds
23df9ba64b parisc architecture fixes & updates for kernel v5.19-rc1
A fix to prevent crash at bootup if CONFIG_SCHED_MC is enabled, and
 add auto-detection of primary graphics card for framebuffer driver.
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Merge tag 'for-5.19/parisc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull more parisc architecture updates from Helge Deller:
 "A fix to prevent crash at bootup if CONFIG_SCHED_MC is enabled, and
  add auto-detection of primary graphics card for framebuffer driver"

* tag 'for-5.19/parisc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc/stifb: Keep track of hardware path of graphics card
  parisc/stifb: Implement fb_is_primary_device()
  parisc: fix a crash with multicore scheduler
2022-06-04 13:50:23 -07:00
Linus Torvalds
4ccbe91de9 xen: branch for v5.19-rc1b
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Merge tag 'for-linus-5.19-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull more xen updates from Juergen Gross:
 "Two cleanup patches for Xen related code and (more important) an
  update of MAINTAINERS for Xen, as Boris Ostrovsky decided to step
  down"

* tag 'for-linus-5.19-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: replace xen_remap() with memremap()
  MAINTAINERS: Update Xen maintainership
  xen: switch gnttab_end_foreign_access() to take a struct page pointer
2022-06-04 13:42:53 -07:00
Linus Torvalds
45b2e5ad68 perf tools changes for v5.19: 3rd batch
- Synthesize task events for pre-existing threads when using 'perf lock --threads',
   as we need to show task names.
 
 - Fix unwinding with ld.lld (>= version 10.0) linked objects, where
   .eh_frame_hdr and .text are in different PT_LOAD program headers, which makes
   perf record --call-graph dwarf fail with such obkects.
 
 - Check if 'perf record' hangs in the ARM SPE (Statistical Profiling Extensions)
   'perf test' entry when recording a workload with forks.
 
 - Trace physical address for Arm SPE events, needed for 'perf c2c' to locate
   the memory node for samples.
 
 - Fix sorting in percent_rmt_hitm_cmp() in 'perf c2c'.
 
 - Further support for Intel hybrid systems in the evlist and 'perf record' code.
 
 - Update IBM s/390 vendor event JSON tables.
 
 - Add metrics (JSON) for Intel Sapphirerapids.
 
 - Update metrics for Intel Alderlake.
 
 - Correct typo of sysf 'event_source' directory in the documentation.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v5.19-2022-06-04' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull more perf tools updates from Arnaldo Carvalho de Melo:

 - Synthesize task events for pre-existing threads when using 'perf lock
   --threads', as we need to show task names.

 - Fix unwinding with ld.lld (>= version 10.0) linked objects, where
  .eh_frame_hdr and .text are in different PT_LOAD program headers,
   which makes perf record --call-graph dwarf fail with such obkects.

 - Check if 'perf record' hangs in the ARM SPE (Statistical Profiling
   Extensions) 'perf test' entry when recording a workload with forks.

 - Trace physical address for Arm SPE events, needed for 'perf c2c' to
   locate the memory node for samples.

 - Fix sorting in percent_rmt_hitm_cmp() in 'perf c2c'.

 - Further support for Intel hybrid systems in the evlist and 'perf
   record' code.

 - Update IBM s/390 vendor event JSON tables.

 - Add metrics (JSON) for Intel Sapphirerapids.

 - Update metrics for Intel Alderlake.

 - Correct typo of sysf 'event_source' directory in the documentation.

* tag 'perf-tools-for-v5.19-2022-06-04' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf vendor events intel: Update metrics for Alderlake
  perf vendor events intel: Add metrics for Sapphirerapids
  perf c2c: Fix sorting in percent_rmt_hitm_cmp()
  perf mem: Trace physical address for Arm SPE events
  perf list: Update event description for IBM zEC12/zBC12 to latest level
  perf list: Update event description for IBM z196/z114 to latest level
  perf list: Update event description for IBM z15 to latest level
  perf list: Update event description for IBM z14 to latest level
  perf list: Update event description for IBM z13 to latest level
  perf list: Update event description for IBM z10 to latest level
  perf list: Add IBM z16 event description for s390
  perf record: Support sample-read topdown metric group for hybrid platforms
  perf lock: Change to synthesize task events
  perf unwind: Fix segbase for ld.lld linked objects
  perf test arm-spe: Check if perf-record hangs when recording workload with forks
  perf docs: Correct typo of event_sources
  perf evlist: Extend arch_evsel__must_be_in_group to support hybrid systems
2022-06-04 13:33:12 -07:00
Steve French
ee3c8019cc cifs: fix uninitialized pointer in error case in dfs_cache_get_tgt_share
Set default value of ppath to null.

Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
2022-06-04 13:33:42 -05:00