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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-12-02 14:01:32 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-12-02 21:57:23 +0000 |
| commit | ae30300490fe9790857d3780f46aa5ad926d6261 (patch) | |
| tree | 659db03954fbefc380e2fd759d06d1c44af5d098 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 7d0aa0db4375edb0a2de66e9099fe0f9b197b80d (diff) | |
| download | linux-ae30300490fe9790857d3780f46aa5ad926d6261.tar.gz linux-ae30300490fe9790857d3780f46aa5ad926d6261.zip | |
drm/i915: Specialise i915_active.work lock classes
Similar to for i915_active.mutex, we require each class of i915_active
to have distinct lockdep chains as some, but by no means all,
i915_active are used within the shrinker and so have much more severe
usage constraints. By using a lockclass local to i915_active_init() all
i915_active workers have the same lock class, and we may generate false
positives when waiting for the i915_active. If we push the lockclass
into the caller, each class of i915_active will have distinct lockdep
chains.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202140133.2444217-1-chris@chris-wilson.co.uk
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