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| author | Uros Bizjak <[email protected]> | 2022-08-22 17:39:56 +0000 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2022-11-18 21:55:09 +0000 |
| commit | 8baceabca656d5ef4494cdeb3b9b9fbb844ac613 (patch) | |
| tree | b60ac4475d4ad3d2b3ddf83a6d0adb199ca48a2e /lib/notifier-error-inject.c | |
| parent | selftests: cgroup: fix unsigned comparison with less than zero (diff) | |
| download | kernel-8baceabca656d5ef4494cdeb3b9b9fbb844ac613.tar.gz kernel-8baceabca656d5ef4494cdeb3b9b9fbb844ac613.zip | |
sched/fair: use try_cmpxchg in task_numa_work
Use try_cmpxchg instead of cmpxchg (*ptr, old, new) == old in
task_numa_work. x86 CMPXCHG instruction returns success in ZF flag, so
this change saves a compare after cmpxchg (and related move instruction in
front of cmpxchg).
No functional change intended.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Uros Bizjak <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Juri Lelli <[email protected]>
Cc: Vincent Guittot <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'lib/notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions