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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2021-01-14 13:56:09 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2021-01-15 08:00:03 +0000 |
| commit | b2fe00bbb2b6bf06929dc300a4e3e91d9c12a3c9 (patch) | |
| tree | a4947eed4857aca73e654ce3097c5b38fb8b4849 /tools/perf/scripts/python | |
| parent | drm/i915: Mark up protected uses of 'i915_request_completed' (diff) | |
| download | linux-b2fe00bbb2b6bf06929dc300a4e3e91d9c12a3c9.tar.gz linux-b2fe00bbb2b6bf06929dc300a4e3e91d9c12a3c9.zip | |
drm/i915: Drop i915_request.lock serialisation around await_start
Originally, we used the signal->lock as a means of following the
previous link in its timeline and peeking at the previous fence.
However, we have replaced the explicit serialisation with a series of
very careful probes that anticipate the links being deleted and the
fences recycled before we are able to acquire a strong reference to it.
We do not need the signal->lock crutch anymore, nor want the contention.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210114135612.13210-2-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/perf/scripts/python')
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