From: Rob Clark <robdclark@xxxxxxxxxxxx> This doesn't remove *all* the struct_mutex, but it covers the worst of it, ie. shrinker/madvise/free/retire. The submit path still uses struct_mutex, but it still needs *something* serialize a portion of the submit path, and lock_stat mostly just shows the lock contention there being with other submits. And there are a few other bits of struct_mutex usage in less critical paths (debugfs, etc). But this seems like a reasonable step in the right direction. Rob Clark (14): drm/msm: Use correct drm_gem_object_put() in fail case drm/msm: Drop chatty trace drm/msm: Move update_fences() drm/msm: Add priv->mm_lock to protect active/inactive lists drm/msm: Document and rename preempt_lock drm/msm: Protect ring->submits with it's own lock drm/msm: Refcount submits drm/msm: Remove obj->gpu drm/msm: Drop struct_mutex from the retire path drm/msm: Drop struct_mutex in free_object() path drm/msm: remove msm_gem_free_work drm/msm: drop struct_mutex in madvise path drm/msm: Drop struct_mutex in shrinker path drm/msm: Don't implicit-sync if only a single ring drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 +- drivers/gpu/drm/msm/adreno/a5xx_preempt.c | 12 +-- drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 4 +- drivers/gpu/drm/msm/msm_debugfs.c | 7 ++ drivers/gpu/drm/msm/msm_drv.c | 15 +--- drivers/gpu/drm/msm/msm_drv.h | 19 +++-- drivers/gpu/drm/msm/msm_gem.c | 76 ++++++------------ drivers/gpu/drm/msm/msm_gem.h | 53 +++++++++---- drivers/gpu/drm/msm/msm_gem_shrinker.c | 58 ++------------ drivers/gpu/drm/msm/msm_gem_submit.c | 17 ++-- drivers/gpu/drm/msm/msm_gpu.c | 96 ++++++++++++++--------- drivers/gpu/drm/msm/msm_gpu.h | 5 +- drivers/gpu/drm/msm/msm_ringbuffer.c | 3 +- drivers/gpu/drm/msm/msm_ringbuffer.h | 13 ++- 14 files changed, 188 insertions(+), 194 deletions(-) -- 2.26.2
