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Filename Latest commit message Latest commit date
Hoeun Ryu 19659c59af fork: free vmapped stacks in cache when cpus are offline
Using virtually mapped stack, kernel stacks are allocated via vmalloc.

In the current implementation, two stacks per cpu can be cached when
tasks are freed and the cached stacks are used again in task
duplications.  But the cached stacks may remain unfreed even when cpu
are offline.  By adding a cpu hotplug callback to free the cached stacks
when a cpu goes offline, the pages of the cached stacks are not wasted.

Link: http://lkml.kernel.org/r/1487076043-17802-1-git-send-email-hoeun.ryu@gmail.com
Signed-off-by: Hoeun Ryu <hoeun.ryu@gmail.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Mateusz Guzik <mguzik@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-08 17:15:11 -07:00
arch
block
certs
crypto
Documentation
drivers drivers/misc/c2port/c2port-duramar2150.c: checking for NULL instead of IS_ERR() 2017-05-08 17:15:10 -07:00
firmware firmware/Makefile: force recompilation if makefile changes 2017-05-08 17:15:10 -07:00
fs reiserfs: use designated initializers 2017-05-08 17:15:11 -07:00
include jiffies.h: declare jiffies and jiffies_64 with ____cacheline_aligned_in_smp 2017-05-08 17:15:10 -07:00
init
ipc
kernel fork: free vmapped stacks in cache when cpus are offline 2017-05-08 17:15:11 -07:00
lib checkpatch: add ability to find bad uses of vsprintf %p<foo> extensions 2017-05-08 17:15:10 -07:00
mm mm, compaction: finish whole pageblock to reduce fragmentation 2017-05-08 17:15:10 -07:00
net
samples
scripts checkpatch: improve the SUSPECT_CODE_INDENT test 2017-05-08 17:15:11 -07:00
security
sound
tools
usr
virt
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.get_maintainer.ignore
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Makefile make help: add tools help target 2017-05-08 17:15:10 -07:00
README

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

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.