Mark Rutland ec570320b0 locking/atomic: Correct (cmp)xchg() instrumentation ... All xchg() and cmpxchg() ops are atomic RMWs, but currently we instrument these with instrument_atomic_write() rather than instrument_atomic_read_write(), missing the read aspect. Similarly, all try_cmpxchg() ops are non-atomic RMWs on *oldp, but we instrument these accesses with instrument_atomic_write() rather than instrument_read_write(), missing the read aspect and erroneously marking these as atomic. Fix the instrumentation for both points. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20230413160644.490976-1-mark.rutland@arm.com Cc: Linus Torvalds <torvalds@linux-foundation.org>		2023-04-29 09:09:31 +02:00
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atomic-arch-fallback.h	locking/atomic: Add generic try_cmpxchg{,64}_local() support	2023-04-29 09:09:02 +02:00
atomic-instrumented.h	locking/atomic: Correct (cmp)xchg() instrumentation	2023-04-29 09:09:31 +02:00
atomic-long.h	atomics: Provide atomic_add_negative() variants	2023-03-28 10:39:29 +02:00