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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-03 10:17:18 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-03 12:23:56 +0100 |
| commit | d650d1f5cfd7ca607dbbb2023b76c2afa873246a (patch) | |
| tree | ea5b2122de9c9a498e85f8be97f3f06f16c6b3ee /drivers/gpu/drm/i915/i915_active.c | |
| parent | c03467ba40f783ebe756114bb68e13a6b404c03a (diff) | |
| download | linux-d650d1f5cfd7ca607dbbb2023b76c2afa873246a.tar.gz linux-d650d1f5cfd7ca607dbbb2023b76c2afa873246a.tar.bz2 linux-d650d1f5cfd7ca607dbbb2023b76c2afa873246a.zip | |
drm/i915: Markup potential lock for i915_active
Make the lockchains more deterministic via i915_active by flagging the
potential lock.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190703091726.11690-7-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_active.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_active.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c index 584b247df9bc..13f304a29fc8 100644 --- a/drivers/gpu/drm/i915/i915_active.c +++ b/drivers/gpu/drm/i915/i915_active.c @@ -268,6 +268,8 @@ int i915_active_wait(struct i915_active *ref) int err; might_sleep(); + might_lock(&ref->mutex); + if (RB_EMPTY_ROOT(&ref->tree)) return 0; |