diff options
| author | Uros Bizjak <ubizjak@gmail.com> | 2023-04-05 16:17:06 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-04-29 09:09:02 +0200 |
| commit | e6ce9d741163af0b846637ce6550ae8a671b1588 (patch) | |
| tree | ec57055469cac285783af882458823c34ad838b8 /include/linux/atomic/atomic-instrumented.h | |
| parent | 286deb7ec03d941664ac3ffaff58814b454adf65 (diff) | |
locking/atomic: Add generic try_cmpxchg{,64}_local() support
Add generic support for try_cmpxchg{,64}_local() and their falbacks.
These provides the generic try_cmpxchg_local family of functions
from the arch_ prefixed version, also adding explicit instrumentation.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20230405141710.3551-2-ubizjak@gmail.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/atomic/atomic-instrumented.h')
| -rw-r--r-- | include/linux/atomic/atomic-instrumented.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/include/linux/atomic/atomic-instrumented.h b/include/linux/atomic/atomic-instrumented.h index 0496816738ca..245ba661c493 100644 --- a/include/linux/atomic/atomic-instrumented.h +++ b/include/linux/atomic/atomic-instrumented.h @@ -2132,6 +2132,24 @@ atomic_long_dec_if_positive(atomic_long_t *v) arch_sync_cmpxchg(__ai_ptr, __VA_ARGS__); \ }) +#define try_cmpxchg_local(ptr, oldp, ...) \ +({ \ + typeof(ptr) __ai_ptr = (ptr); \ + typeof(oldp) __ai_oldp = (oldp); \ + instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \ + instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \ + arch_try_cmpxchg_local(__ai_ptr, __ai_oldp, __VA_ARGS__); \ +}) + +#define try_cmpxchg64_local(ptr, oldp, ...) \ +({ \ + typeof(ptr) __ai_ptr = (ptr); \ + typeof(oldp) __ai_oldp = (oldp); \ + instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \ + instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \ + arch_try_cmpxchg64_local(__ai_ptr, __ai_oldp, __VA_ARGS__); \ +}) + #define cmpxchg_double(ptr, ...) \ ({ \ typeof(ptr) __ai_ptr = (ptr); \ @@ -2149,4 +2167,4 @@ atomic_long_dec_if_positive(atomic_long_t *v) }) #endif /* _LINUX_ATOMIC_INSTRUMENTED_H */ -// 1b485de9cbaa4900de59e14ee2084357eaeb1c3a +// 97fe4d79aa058d2164df824632cbc4f716d2a407 |