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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2023-11-22 18:29:42 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2023-11-23 15:50:35 +0100 |
| commit | 55495a7c8845a2d788c870b90c4883f5ab2f2363 (patch) | |
| tree | 57b3bf70ca4c43ec668ea9a098656da35797f83a /include/asm-generic/atomic.h | |
| parent | d6c0e2ea68baf76e22956f3c089c84d7fb17ab8d (diff) | |
| download | barebox-55495a7c8845a2d788c870b90c4883f5ab2f2363.tar.gz barebox-55495a7c8845a2d788c870b90c4883f5ab2f2363.tar.xz | |
include: asm-generic/atomic.h: define atomic_cmpxchg
We already define a generic cmpxchg implementation, so add one that
operates on atomic_t as well.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20231122172951.376531-12-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include/asm-generic/atomic.h')
| -rw-r--r-- | include/asm-generic/atomic.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h index 27b0f73b48..74429e1c37 100644 --- a/include/asm-generic/atomic.h +++ b/include/asm-generic/atomic.h @@ -116,6 +116,8 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) *addr &= ~mask; } +#define atomic_cmpxchg(v, o, n) cmpxchg(&((v)->counter), o, n) + /* Atomic operations are already serializing on ARM */ #define smp_mb__before_atomic_dec() barrier() #define smp_mb__after_atomic_dec() barrier() |