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Filename Latest commit message Latest commit date
Oleg Nesterov b772434be0 signal: simplify set_user_sigmask/restore_user_sigmask
task->saved_sigmask and ->restore_sigmask are only used in the ret-from-
syscall paths.  This means that set_user_sigmask() can save ->blocked in
->saved_sigmask and do set_restore_sigmask() to indicate that ->blocked
was modified.

This way the callers do not need 2 sigset_t's passed to set/restore and
restore_user_sigmask() renamed to restore_saved_sigmask_unless() turns
into the trivial helper which just calls restore_saved_sigmask().

Link: http://lkml.kernel.org/r/20190606113206.GA9464@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Eric Wong <e@80x24.org>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: David Laight <David.Laight@aculab.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-07-16 19:23:24 -07:00
arch powerpc: define syscall_get_error() 2019-07-16 19:23:24 -07:00
block
certs
crypto
Documentation coda: change Coda's user api to use 64-bit time_t in timespec 2019-07-16 19:23:23 -07:00
drivers kernel: fix typos and some coding style in comments 2019-07-16 19:23:21 -07:00
fs signal: simplify set_user_sigmask/restore_user_sigmask 2019-07-16 19:23:24 -07:00
include signal: simplify set_user_sigmask/restore_user_sigmask 2019-07-16 19:23:24 -07:00
init init/Kconfig: fix neighboring typos 2019-07-16 19:23:22 -07:00
ipc
kernel signal: simplify set_user_sigmask/restore_user_sigmask 2019-07-16 19:23:24 -07:00
lib lib/rbtree: avoid generating code twice for the cached versions 2019-07-16 19:23:22 -07:00
LICENSES
mm mm: fix the MAP_UNINITIALIZED flag 2019-07-16 19:23:21 -07:00
net pci-v5.3-changes 2019-07-15 20:44:49 -07:00
samples Kbuild updates for v5.3 2019-07-12 16:03:16 -07:00
scripts checkpatch.pl: warn on duplicate sysctl local variable 2019-07-16 19:23:22 -07:00
security Merge branch 'akpm' (patches from Andrew) 2019-07-12 11:40:28 -07:00
sound kernel: fix typos and some coding style in comments 2019-07-16 19:23:21 -07:00
tools selftests/ptrace: add a test case for PTRACE_GET_SYSCALL_INFO 2019-07-16 19:23:24 -07:00
usr
virt ARM: 2019-07-12 15:35:14 -07:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS for-linus-20190715 2019-07-15 21:20:52 -07:00
Makefile Kbuild updates for v5.3 2019-07-12 16:03:16 -07:00
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.