diff options
| author | Davidlohr Bueso <dave@stgolabs.net> | 2015-09-30 13:03:11 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-10-06 17:28:19 +0200 |
| commit | 63ab7bd0d450b726b88fa4b932f151b98cee2557 (patch) | |
| tree | f0c6505750c3e1889e813916778f6f974936d10f /include/linux/atomic.h | |
| parent | 82fc167c392a1700f9adbde639730ee8c8122474 (diff) | |
locking/asm-generic: Add _{relaxed|acquire|release}() variants for inc/dec atomics
Similar to what we have for regular add/sub calls. For now, no actual arch
implements them, so everyone falls back to the default atomics... iow,
nothing changes. These will be used in future primitives.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul E.McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1443643395-17016-2-git-send-email-dave@stgolabs.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/atomic.h')
| -rw-r--r-- | include/linux/atomic.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/include/linux/atomic.h b/include/linux/atomic.h index e326469bb9d6..27e580d232ca 100644 --- a/include/linux/atomic.h +++ b/include/linux/atomic.h @@ -90,6 +90,30 @@ static inline int atomic_read_ctrl(const atomic_t *v) #endif #endif /* atomic_add_return_relaxed */ +/* atomic_inc_return_relaxed */ +#ifndef atomic_inc_return_relaxed +#define atomic_inc_return_relaxed atomic_inc_return +#define atomic_inc_return_acquire atomic_inc_return +#define atomic_inc_return_release atomic_inc_return + +#else /* atomic_inc_return_relaxed */ + +#ifndef atomic_inc_return_acquire +#define atomic_inc_return_acquire(...) \ + __atomic_op_acquire(atomic_inc_return, __VA_ARGS__) +#endif + +#ifndef atomic_inc_return_release +#define atomic_inc_return_release(...) \ + __atomic_op_release(atomic_inc_return, __VA_ARGS__) +#endif + +#ifndef atomic_inc_return +#define atomic_inc_return(...) \ + __atomic_op_fence(atomic_inc_return, __VA_ARGS__) +#endif +#endif /* atomic_inc_return_relaxed */ + /* atomic_sub_return_relaxed */ #ifndef atomic_sub_return_relaxed #define atomic_sub_return_relaxed atomic_sub_return @@ -114,6 +138,30 @@ static inline int atomic_read_ctrl(const atomic_t *v) #endif #endif /* atomic_sub_return_relaxed */ +/* atomic_dec_return_relaxed */ +#ifndef atomic_dec_return_relaxed +#define atomic_dec_return_relaxed atomic_dec_return +#define atomic_dec_return_acquire atomic_dec_return +#define atomic_dec_return_release atomic_dec_return + +#else /* atomic_dec_return_relaxed */ + +#ifndef atomic_dec_return_acquire +#define atomic_dec_return_acquire(...) \ + __atomic_op_acquire(atomic_dec_return, __VA_ARGS__) +#endif + +#ifndef atomic_dec_return_release +#define atomic_dec_return_release(...) \ + __atomic_op_release(atomic_dec_return, __VA_ARGS__) +#endif + +#ifndef atomic_dec_return +#define atomic_dec_return(...) \ + __atomic_op_fence(atomic_dec_return, __VA_ARGS__) +#endif +#endif /* atomic_dec_return_relaxed */ + /* atomic_xchg_relaxed */ #ifndef atomic_xchg_relaxed #define atomic_xchg_relaxed atomic_xchg @@ -194,6 +242,31 @@ static inline int atomic_read_ctrl(const atomic_t *v) #endif #endif /* atomic64_add_return_relaxed */ +/* atomic64_inc_return_relaxed */ +#ifndef atomic64_inc_return_relaxed +#define atomic64_inc_return_relaxed atomic64_inc_return +#define atomic64_inc_return_acquire atomic64_inc_return +#define atomic64_inc_return_release atomic64_inc_return + +#else /* atomic64_inc_return_relaxed */ + +#ifndef atomic64_inc_return_acquire +#define atomic64_inc_return_acquire(...) \ + __atomic_op_acquire(atomic64_inc_return, __VA_ARGS__) +#endif + +#ifndef atomic64_inc_return_release +#define atomic64_inc_return_release(...) \ + __atomic_op_release(atomic64_inc_return, __VA_ARGS__) +#endif + +#ifndef atomic64_inc_return +#define atomic64_inc_return(...) \ + __atomic_op_fence(atomic64_inc_return, __VA_ARGS__) +#endif +#endif /* atomic64_inc_return_relaxed */ + + /* atomic64_sub_return_relaxed */ #ifndef atomic64_sub_return_relaxed #define atomic64_sub_return_relaxed atomic64_sub_return @@ -218,6 +291,30 @@ static inline int atomic_read_ctrl(const atomic_t *v) #endif #endif /* atomic64_sub_return_relaxed */ +/* atomic64_dec_return_relaxed */ +#ifndef atomic64_dec_return_relaxed +#define atomic64_dec_return_relaxed atomic64_dec_return +#define atomic64_dec_return_acquire atomic64_dec_return +#define atomic64_dec_return_release atomic64_dec_return + +#else /* atomic64_dec_return_relaxed */ + +#ifndef atomic64_dec_return_acquire +#define atomic64_dec_return_acquire(...) \ + __atomic_op_acquire(atomic64_dec_return, __VA_ARGS__) +#endif + +#ifndef atomic64_dec_return_release +#define atomic64_dec_return_release(...) \ + __atomic_op_release(atomic64_dec_return, __VA_ARGS__) +#endif + +#ifndef atomic64_dec_return +#define atomic64_dec_return(...) \ + __atomic_op_fence(atomic64_dec_return, __VA_ARGS__) +#endif +#endif /* atomic64_dec_return_relaxed */ + /* atomic64_xchg_relaxed */ #ifndef atomic64_xchg_relaxed #define atomic64_xchg_relaxed atomic64_xchg |