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Mark Rutland d0e03218ca locking/atomic: atomic: simplify ifdeffery
Now that asm-generic/atomic.h is only used by architectures without any
architecture-specific atomic definitions, we know that there will be no
architecture-specific implementations to override, and can remove the
ifdeffery this has previously required, bringing it into line with
asm-generic/atomic64.h.

At the same time, we can implement atomic_add() and atomic_sub()
directly using ATOMIC_OP(), since we know architectures won't provide
atomic_add_return() or atomic_sub_return().

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210525140232.53872-9-mark.rutland@arm.com
2021-05-26 13:20:50 +02:00
arch locking/atomic: openrisc: avoid asm-generic/atomic.h 2021-05-26 13:20:49 +02:00
block block-5.13-2021-05-09 2021-05-09 13:25:14 -07:00
certs
crypto
Documentation * Lots of bug fixes. 2021-05-10 12:30:45 -07:00
drivers fbmem: fix horribly incorrect placement of __maybe_unused 2021-05-09 14:03:33 -07:00
fs for-5.13-rc1-part2-tag 2021-05-11 09:43:16 -07:00
include locking/atomic: atomic: simplify ifdeffery 2021-05-26 13:20:50 +02:00
init
ipc
kernel futex: Deduplicate cond_resched() invocation in futex_wake_op() 2021-05-25 17:30:15 +02:00
lib
LICENSES
mm
net locking/atomic: net: use linux/atomic.h for xchg & cmpxchg 2021-05-26 13:20:49 +02:00
samples
scripts
security
sound
tools selftests: futex: Expand timeout test 2021-05-12 20:44:59 +02:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
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Makefile Linux 5.13-rc1 2021-05-09 14:17:44 -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.