diff options
| author | Lionel Landwerlin <lionel.g.landwerlin@intel.com> | 2014-09-12 13:48:37 +0100 |
|---|---|---|
| committer | Damien Lespiau <damien.lespiau@intel.com> | 2014-09-15 14:51:16 +0100 |
| commit | 88025ad808aa61b2d5db63b86fc9327aefdecc3b (patch) | |
| tree | dc93b6d586eef0987030ce278e236d033585676b /intel | |
| parent | 743af59669386cb6e063fa4bd85f0a0b2da86295 (diff) | |
intel: make bo_unreference() thread safe
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Diffstat (limited to 'intel')
| -rw-r--r-- | intel/intel_bufmgr_gem.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c index 1e2dd77e..bf6745d2 100644 --- a/intel/intel_bufmgr_gem.c +++ b/intel/intel_bufmgr_gem.c @@ -1157,7 +1157,8 @@ static void drm_intel_gem_bo_unreference(drm_intel_bo *bo) drm_intel_bo_gem *bo_gem = (drm_intel_bo_gem *) bo; assert(atomic_read(&bo_gem->refcount) > 0); - if (atomic_dec_and_test(&bo_gem->refcount)) { + + if (atomic_add_unless(&bo_gem->refcount, -1, 1)) { drm_intel_bufmgr_gem *bufmgr_gem = (drm_intel_bufmgr_gem *) bo->bufmgr; struct timespec time; @@ -1165,8 +1166,12 @@ static void drm_intel_gem_bo_unreference(drm_intel_bo *bo) clock_gettime(CLOCK_MONOTONIC, &time); pthread_mutex_lock(&bufmgr_gem->lock); - drm_intel_gem_bo_unreference_final(bo, time.tv_sec); - drm_intel_gem_cleanup_bo_cache(bufmgr_gem, time.tv_sec); + + if (atomic_dec_and_test(&bo_gem->refcount)) { + drm_intel_gem_bo_unreference_final(bo, time.tv_sec); + drm_intel_gem_cleanup_bo_cache(bufmgr_gem, time.tv_sec); + } + pthread_mutex_unlock(&bufmgr_gem->lock); } } |