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Lai Jiangshan aa8684755a workqueue: Remove unneeded lockdep_assert_cpus_held() The commit `19af457573` ("workqueue: Remove cpus_read_lock() from apply_wqattrs_lock()") removes the unneed cpus_read_lock() after the pwq creations and installations have been reworked based on wq_online_cpumask rather than cpu_online_mask making cpus_read_lock() is unneeded during wqattrs changes. But it desn't remove the lockdep_assert_cpus_held() checks during wqattrs changes, which leads to complaints from lockdep reported by kernel test robot: [ 15.726567][ T131] ------------[ cut here ]------------ [ 15.728117][ T131] WARNING: CPU: 1 PID: 131 at kernel/cpu.c:525 lockdep_assert_cpus_held (kernel/cpu.c:525) [ 15.731191][ T131] Modules linked in: floppy(+) parport_pc(+) parport qemu_fw_cfg rtc_cmos [ 15.733423][ T131] CPU: 1 PID: 131 Comm: systemd-udevd Tainted: G T 6.10.0-rc2-00254-g19af45757383 #1 df6f039f42e8818bf9a534449362ebad1aad32e2 [ 15.737011][ T131] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 15.739760][ T131] EIP: lockdep_assert_cpus_held (kernel/cpu.c:525) [ 15.741326][ T131] Code: 97 c2 03 72 20 83 3d f4 73 97 c2 00 74 17 55 89 e5 b8 fc bd 4d c2 ba ff ff ff ff e8 e4 57 d1 00 85 c0 74 06 5d 31 c0 31 d2 c3 <0f> 0b eb f6 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 89 e5 b8 Fix it by removing the unneeded lockdep_assert_cpus_held(). Also remove the unneed cpus_read_lock() from wq_affn_dfl_set(). tj: Dropped the removal of cpus_read_lock/unlock() in wq_affn_dfl_set() to keep this patch fix only. Cc: kernel test robot <oliver.sang@intel.com> Fixes: 19af45757383("workqueue: Remove cpus_read_lock() from apply_wqattrs_lock()") Reported-by: kernel test robot <oliver.sang@intel.com> Closes: https://lore.kernel.org/oe-lkp/202407141846.665c0446-lkp@intel.com Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com> Signed-off-by: Tejun Heo <tj@kernel.org>		2024-07-15 14:01:14 -10:00
arch	ARM: Provide one-byte cmpxchg emulation	2024-07-15 15:19:36 -07:00
block	for-6.11/block-20240710	2024-07-15 14:20:22 -07:00
certs	kbuild: use $(src) instead of $(srctree)/$(src) for source directory	2024-05-10 04:34:52 +09:00
crypto	This push fixes a bug in the new ecc P521 code as well as a buggy	2024-05-20 08:47:54 -07:00
Documentation	cgroup: Changes for v6.11	2024-07-15 16:41:32 -07:00
drivers	Updates for timers, timekeeping and related functionality:	2024-07-15 15:03:09 -07:00
fs	for-6.11/block-20240710	2024-07-15 14:20:22 -07:00
include	cgroup: Changes for v6.11	2024-07-15 16:41:32 -07:00
init	gcc: disable '-Warray-bounds' for gcc-9	2024-06-15 10:43:04 -07:00
io_uring	for-6.11/block-20240710	2024-07-15 14:20:22 -07:00
ipc	ipc: mqueue: remove assignment from IS_ERR argument	2024-07-09 06:47:40 +02:00
kernel	workqueue: Remove unneeded lockdep_assert_cpus_held()	2024-07-15 14:01:14 -10:00
lib	Updates for timers, timekeeping and related functionality:	2024-07-15 15:03:09 -07:00
LICENSES	LICENSES: Add the copyleft-next-0.3.1 license	2022-11-08 15:44:01 +01:00
mm	vfs-6.11.mount.api	2024-07-15 11:31:32 -07:00
net	for-6.11/io_uring-20240714	2024-07-15 13:49:10 -07:00
rust	for-6.11/block-20240710	2024-07-15 14:20:22 -07:00
samples	tracing/treewide: Remove second parameter of __assign_str()	2024-05-22 20:14:47 -04:00
scripts	kbuild: rpm-pkg: avoid the warnings with dtb's listed twice	2024-07-15 03:13:32 +09:00
security	integrity-v6.10-fix	2024-07-05 16:21:54 -07:00
sound	Updates for timers, timekeeping and related functionality:	2024-07-15 15:03:09 -07:00
tools	cgroup: Changes for v6.11	2024-07-15 16:41:32 -07:00
usr	kbuild: use $(src) instead of $(srctree)/$(src) for source directory	2024-05-10 04:34:52 +09:00
virt	KVM fixes for 6.10	2024-06-21 08:03:55 -04:00
.clang-format	clang-format: Update with v6.7-rc4's `for_each` macro list	2023-12-08 23:54:38 +01:00
.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	Add Jeff Kirsher to .get_maintainer.ignore	2024-03-08 11:36:54 +00:00
.gitattributes	.gitattributes: set diff driver for Rust source code files	2023-05-31 17:48:25 +02:00
.gitignore	kbuild: create a list of all built DTB files	2024-02-19 18:20:39 +09:00
.mailmap	for-6.11/block-20240710	2024-07-15 14:20:22 -07:00
.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	pci-v6.10-fixes-2	2024-07-05 12:33:00 -07:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	cgroup: Changes for v6.11	2024-07-15 16:41:32 -07:00
Makefile	Linux 6.10	2024-07-14 15:43:32 -07:00
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.