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Paul E. McKenney 4d80b8e196 rcu: Restrict RCU_STRICT_GRACE_PERIOD to at most four CPUs 
Kernels built with CONFIG_RCU_STRICT_GRACE_PERIOD=y can experience
significant lock contention due to RCU's resulting focus on ending grace
periods as soon as possible.  This is OK, but only if there are not very
many CPUs.  This commit therefore puts this Kconfig option off-limits
to systems with more than four CPUs.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2021-05-10 16:22:54 -07:00
arch
Handle power-gating of AMD IOMMU perf counters properly when they are used.
2021-05-09 13:00:26 -07:00
block
block-5.13-2021-05-09
2021-05-09 13:25:14 -07:00
certs
Kbuild updates for v5.13 (2nd)
2021-05-08 10:00:11 -07:00
crypto
for-5.13/drivers-2021-04-27
2021-04-28 14:39:37 -07:00
Documentation
A set of scheduler updates:
2021-05-09 13:14:34 -07:00
drivers
fbmem: fix horribly incorrect placement of __maybe_unused
2021-05-09 14:03:33 -07:00
fs
3 small SMB3 chmultichannel related changesets (also for stable)
2021-05-09 13:19:29 -07:00
include
rcu: Reject RCU_LOCKDEP_WARN() false positives
2021-05-10 16:22:54 -07:00
init
Merge branch 'akpm' (patches from Andrew)
2021-05-07 00:34:51 -07:00
ipc
ipc/sem.c: spelling fix
2021-05-07 00:26:34 -07:00
kernel
rcu: Restrict RCU_STRICT_GRACE_PERIOD to at most four CPUs
2021-05-10 16:22:54 -07:00
lib
Kbuild updates for v5.13 (2nd)
2021-05-08 10:00:11 -07:00
LICENSES
LICENSES: Add the CC-BY-4.0 license
2020-12-08 10:33:27 -07:00
mm
rcu: Fix typo in comment: kthead -> kthread
2021-05-10 15:45:58 -07:00
net
Networking fixes for 5.13-rc1, including fixes from bpf, can
2021-05-08 08:31:46 -07:00
samples
Kbuild updates for v5.13 (2nd)
2021-05-08 10:00:11 -07:00
scripts
Kbuild updates for v5.13 (2nd)
2021-05-08 10:00:11 -07:00
security
Simple code cleanup
2021-05-05 12:08:06 -07:00
sound
sound fixes for 5.13-rc1
2021-05-07 11:40:18 -07:00
tools
Kbuild updates for v5.13 (2nd)
2021-05-08 10:00:11 -07:00
usr
.gitignore: prefix local generated files with a slash
2021-05-02 00:43:35 +09:00
virt
KVM: Boost vCPU candidate in user mode which is delivering interrupt
2021-04-21 12:20:03 -04:00
.clang-format
cxl for 5.12
2021-02-24 09:38:36 -08:00
.cocciconfig
…
.get_maintainer.ignore
Opt out of scripts/get_maintainer.pl
2019-05-16 10:53:40 -07:00
.gitattributes
.gitattributes: use 'dts' diff driver for dts files
2019-12-04 19:44:11 -08:00
.gitignore
.gitignore: ignore only top-level modules.builtin
2021-05-02 00:43:35 +09:00
.mailmap
It's been a relatively busy cycle in docsland, though more than usually
2021-04-26 13:22:43 -07:00
COPYING
COPYING: state that all contributions really are covered by this file
2020-02-10 13:32:20 -08:00
CREDITS
MAINTAINERS: move Murali Karicheri to credits
2021-04-29 15:47:30 -07:00
Kbuild
kbuild: rename hostprogs-y/always to hostprogs/always-y
2020-02-04 01:53:07 +09:00
Kconfig
kbuild: ensure full rebuild when the compiler is updated
2020-05-12 13:28:33 +09:00
MAINTAINERS
Networking fixes for 5.13-rc1, including fixes from bpf, can
2021-05-08 08:31:46 -07:00
Makefile
Linux 5.13-rc1
2021-05-09 14:17:44 -07:00
README
Drop all 00-INDEX files from Documentation/
2018-09-09 15:08:58 -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 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.
Description
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