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David Thompson 46be1f5aae platform/mellanox: mlxbf-pmc: add sysfs_attr_init() to count_clock init 
[ Upstream commit a7b4747d8e ]

The lock-related debug logic (CONFIG_LOCK_STAT) in the kernel is noting
the following warning when the BlueField-3 SOC is booted:

  BUG: key ffff00008a3402a8 has not been registered!
  ------------[ cut here ]------------
  DEBUG_LOCKS_WARN_ON(1)
  WARNING: CPU: 4 PID: 592 at kernel/locking/lockdep.c:4801 lockdep_init_map_type+0x1d4/0x2a0
<snip>
  Call trace:
   lockdep_init_map_type+0x1d4/0x2a0
   __kernfs_create_file+0x84/0x140
   sysfs_add_file_mode_ns+0xcc/0x1cc
   internal_create_group+0x110/0x3d4
   internal_create_groups.part.0+0x54/0xcc
   sysfs_create_groups+0x24/0x40
   device_add+0x6e8/0x93c
   device_register+0x28/0x40
   __hwmon_device_register+0x4b0/0x8a0
   devm_hwmon_device_register_with_groups+0x7c/0xe0
   mlxbf_pmc_probe+0x1e8/0x3e0 [mlxbf_pmc]
   platform_probe+0x70/0x110

The mlxbf_pmc driver must call sysfs_attr_init() during the
initialization of the "count_clock" data structure to avoid
this warning.

Fixes: 5efc800975 ("platform/mellanox: mlxbf-pmc: Add support for monitoring cycle count")
Reviewed-by: Shravan Kumar Ramani <shravankr@nvidia.com>
Signed-off-by: David Thompson <davthompson@nvidia.com>
Link: https://patch.msgid.link/20251013155605.3589770-1-davthompson@nvidia.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-29 14:10:18 +01:00
arch s390/mm: Use __GFP_ACCOUNT for user page table allocations 2025-10-29 14:10:17 +01:00
block block: Remove elevator_lock usage from blkg_conf frozen operations 2025-10-23 16:24:37 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: essiv - Check ssize for decryption and in-place encryption 2025-10-19 16:37:14 +02:00
Documentation arm64: errata: Apply workarounds for Neoverse-V3AE 2025-10-23 16:24:38 +02:00
drivers platform/mellanox: mlxbf-pmc: add sysfs_attr_init() to count_clock init 2025-10-29 14:10:18 +01:00
fs smb: server: let smb_direct_flush_send_list() invalidate a remote key first 2025-10-29 14:10:17 +01:00
include cgroup/misc: fix misc_res_type kernel-doc warning 2025-10-29 14:10:15 +01:00
init init: handle bootloader identifier in kernel parameters 2025-10-19 16:37:27 +02:00
io_uring io_uring: protect mem region deregistration 2025-10-23 16:24:22 +02:00
ipc vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
kernel sched/fair: Block delayed tasks on throttled hierarchy during dequeue 2025-10-29 14:10:15 +01:00
lib lib/genalloc: fix device leak in of_gen_pool_get() 2025-10-19 16:37:28 +02:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm slab: reset slab->obj_ext when freeing and it is OBJEXTS_ALLOC_FAIL 2025-10-23 16:24:21 +02:00
net tls: don't rely on tx_work during send() 2025-10-23 16:24:31 +02:00
rust rust: cpufreq: fix formatting 2025-10-23 16:24:38 +02:00
samples 15 hotfixes. 11 are cc:stable and the remainder address post-6.16 issues 2025-09-17 21:34:26 -07:00
scripts kbuild: Add '.rel.*' strip pattern for vmlinux 2025-10-19 16:37:15 +02:00
security KEYS: trusted_tpm1: Compare HMAC values in constant time 2025-10-19 16:37:28 +02:00
sound ASoC: amd/sdw_utils: avoid NULL deref when devm_kasprintf() fails 2025-10-23 16:24:37 +02:00
tools selftests: arg_parsing: Ensure data is flushed to disk before reading. 2025-10-23 16:24:37 +02:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt Merge tag 'kvm-x86-no_assignment-6.17' of https://github.com/kvm-x86/linux into HEAD 2025-07-29 08:36:42 -04:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore gitignore: allow .pylintrc to be tracked 2025-07-02 17:10:04 -06:00
.mailmap 7 hotfixes. 4 are cc:stable and the remainder address post-6.16 issues or 2025-09-28 09:32:00 -07:00
.pylintrc docs: add a .pylintrc file with sys path for docs scripts 2025-04-09 12:10:33 -06:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: retire Boris from TLS maintainers 2025-08-26 17:36:01 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS i2c-for-6.17-rc8 2025-09-28 13:19:23 -07:00
Makefile Unbreak 'make tools/*' for user-space targets 2025-10-29 14:10:18 +01:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.