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| author | Mark Rutland <mark.rutland@arm.com> | 2023-04-13 17:06:44 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-04-29 09:09:31 +0200 |
| commit | ec570320b09f76d52819e60abdccf372658216b6 (patch) | |
| tree | 84f20c89e91ee82eab626f0d510a63a335149dc5 /arch/ia64 | |
| parent | 5cd4c268412f802e71b7722c3ec4638b0fe04acd (diff) | |
| download | linux-ec570320b09f76d52819e60abdccf372658216b6.tar.gz linux-ec570320b09f76d52819e60abdccf372658216b6.tar.bz2 linux-ec570320b09f76d52819e60abdccf372658216b6.zip | |
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>
Diffstat (limited to 'arch/ia64')
0 files changed, 0 insertions, 0 deletions