diff options
| author | Uros Bizjak <ubizjak@gmail.com> | 2024-05-28 16:43:13 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-03 19:30:02 -0700 |
| commit | 21664442be1bf79094dd9d21b8833acbfbd80ea7 (patch) | |
| tree | 8dfb8832422b524539b4b9ecd56261c6ab3bd36a | |
| parent | fefc6e6631ff43427e81f08c8e49f7787ff0213a (diff) | |
percpu: add __this_cpu_try_cmpxchg()
Add __this_cpu_try_cmpxchg() version of the percpu op.
Link: https://lkml.kernel.org/r/20240528144345.5980-1-ubizjak@gmail.com
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Acked-by: Dennis Zhou <dennis@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | include/linux/percpu-defs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h index ec3573119923..8efce7414fad 100644 --- a/include/linux/percpu-defs.h +++ b/include/linux/percpu-defs.h @@ -475,6 +475,12 @@ do { \ raw_cpu_cmpxchg(pcp, oval, nval); \ }) +#define __this_cpu_try_cmpxchg(pcp, ovalp, nval) \ +({ \ + __this_cpu_preempt_check("try_cmpxchg"); \ + raw_cpu_try_cmpxchg(pcp, ovalp, nval); \ +}) + #define __this_cpu_sub(pcp, val) __this_cpu_add(pcp, -(typeof(pcp))(val)) #define __this_cpu_inc(pcp) __this_cpu_add(pcp, 1) #define __this_cpu_dec(pcp) __this_cpu_sub(pcp, 1) |