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| author |   Mark Rutland <mark.rutland@arm.com> | 2021-05-25 15:02:00 +0100 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2021-05-26 13:20:49 +0200 |
| commit | 9be85de97786a75f62080de1c0c13656f65cba84 (patch) | |
| tree | fda5463211f1e92135081ba872293f7ebad868e4 /include/linux/atomic.h | |
| parent | futex: Deduplicate cond_resched() invocation in futex_wake_op() (diff) | |
| download | linux-dev-9be85de97786a75f62080de1c0c13656f65cba84.tar.xz linux-dev-9be85de97786a75f62080de1c0c13656f65cba84.zip | |
locking/atomic: make ARCH_ATOMIC a Kconfig symbol
Subsequent patches will move architectures over to the ARCH_ATOMIC API,
after preparing the asm-generic atomic implementations to function with
or without ARCH_ATOMIC.
As some architectures use the asm-generic implementations exclusively
(and don't have a local atomic.h), and to avoid the risk that
ARCH_ATOMIC isn't defined in some cases we expect, let's make the
ARCH_ATOMIC macro a Kconfig symbol instead, so that we can guarantee it
is consistently available where needed.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
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/20210525140232.53872-2-mark.rutland@arm.com
Diffstat (limited to 'include/linux/atomic.h')
| -rw-r--r-- | include/linux/atomic.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/atomic.h b/include/linux/atomic.h index 571a11008ab5..4f8d83f9e480 100644 --- a/include/linux/atomic.h +++ b/include/linux/atomic.h @@ -77,7 +77,7 @@ __ret; \ }) -#ifdef ARCH_ATOMIC +#ifdef CONFIG_ARCH_ATOMIC #include <linux/atomic-arch-fallback.h> #include <asm-generic/atomic-instrumented.h> #else |