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Filename Latest commit message Latest commit date
Yunfeng Ye b6fe34d936 tick/sched: Reduce seqcount held scope in tick_do_update_jiffies64()
[ Upstream commit 94ad2e3cedb82af034f6d97c58022f162b669f9b ]

If jiffies are up to date already (caller lost the race against another
CPU) there is no point to change the sequence count. Doing that just forces
other CPUs into the seqcount retry loop in tick_nohz_next_event() for
nothing.

Just bail out early.

[ tglx: Rewrote most of it ]

Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201117132006.462195901@linutronix.de
Stable-dep-of: e9523a0d8189 ("tick/common: Align tick period with the HZ tick.")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-05-17 11:35:39 +02:00
arch arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step 2023-05-17 11:35:39 +02:00
block blk-iocost: fix divide by 0 error in calc_lcoefs() 2023-03-11 16:43:54 +01:00
certs
crypto asymmetric_keys: log on fatal failures in PE/pkcs7 2023-04-20 12:07:36 +02:00
Documentation media: uapi: add MEDIA_BUS_FMT_METADATA_FIXED media bus format. 2023-05-17 11:35:36 +02:00
drivers regulator: stm32-pwr: fix of_iomap leak 2023-05-17 11:35:38 +02:00
fs erofs: fix potential overflow calculating xattr_isize 2023-05-17 11:35:35 +02:00
include media: uapi: add MEDIA_BUS_FMT_METADATA_FIXED media bus format. 2023-05-17 11:35:36 +02:00
init
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:23:06 +01:00
kernel tick/sched: Reduce seqcount held scope in tick_do_update_jiffies64() 2023-05-17 11:35:39 +02:00
lib debugobject: Prevent init race with static objects 2023-05-17 11:35:39 +02:00
LICENSES
mm mm/swap: fix swap_info_struct race between swapoff and get_swap_pages() 2023-04-20 12:07:35 +02:00
net bluetooth: Perform careful capability checks in hci_sock_ioctl() 2023-05-17 11:35:31 +02:00
samples samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe() 2023-01-18 11:41:26 +01:00
scripts ASN.1: Fix check for strdup() success 2023-04-26 11:24:06 +02:00
security selinux: ensure av_permissions.h is built when needed 2023-05-17 11:35:34 +02:00
sound ASoC: Intel: bytcr_rt5640: Add quirk for the Acer Iconia One 7 B1-750 2023-05-17 11:35:31 +02:00
tools perf sched: Cast PTHREAD_STACK_MIN to int as it may turn into sysconf(__SC_THREAD_STACK_MIN_VALUE) 2023-05-17 11:35:32 +02:00
usr
virt KVM: Destroy target device if coalesced MMIO unregistration fails 2023-03-11 16:44:01 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS net/phy/mdio-i2c: Move header file to include/linux/mdio 2023-02-06 07:52:46 +01:00
Makefile Linux 5.4.242 2023-04-26 11:24:06 +02:00
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 Restructured Text 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.