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| author | Uros Bizjak <ubizjak@gmail.com> | 2024-10-03 10:44:31 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2024-10-23 15:45:50 +0300 |
| commit | 7a118f68fa828ee7b13e639353895118ef2056d7 (patch) | |
| tree | ec565eb788dbce922e1dff316edc18cc1a21b5a5 /tools/perf/scripts/python | |
| parent | drm/i915/psr: vbt.psr.enable is only for eDP panels (diff) | |
| download | linux-7a118f68fa828ee7b13e639353895118ef2056d7.tar.gz linux-7a118f68fa828ee7b13e639353895118ef2056d7.zip | |
drm/i915/active: Use try_cmpxchg() in active_fence_cb()
Replace this pattern in active_fence_cb():
cmpxchg(*ptr, old, new) == old
... with the simpler and faster:
try_cmpxchg(*ptr, &old, new)
The x86 CMPXCHG instruction returns success in the ZF flag,
so this change saves a compare after the CMPXCHG.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20241003084533.871524-1-ubizjak@gmail.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions