kernel/drivers/gpu/drm/msm/msm_gem_shrinker.c, branch linux-4.17.y

drm/msm: Separate locking of buffer resources from struct_mutex

2017-06-17T12:03:07Z

Buffer object specific resources like pages, domains, sg list need not be protected with struct_mutex. They can be protected with a buffer object level lock. This simplifies locking and makes it easier to avoid potential recursive locking scenarios for SVM involving mmap_sem and struct_mutex. This also removes unnecessary serialization when creating buffer objects, and also between buffer object creation and GPU command submission. Signed-off-by: Sushmita Susheelendra [robclark: squash in handling new locking for shrinker] Signed-off-by: Rob Clark

Merge branch 'linus' into locking/core, to pick up fixes

2016-11-22T11:37:38Z

Signed-off-by: Ingo Molnar

locking/mutex, drm: Introduce mutex_trylock_recursive()

2016-11-15T13:19:55Z

By popular DRM demand, introduce mutex_trylock_recursive() to fix up the two GEM users. Without this it is very easy for these drivers to get stuck in low-memory situations and trigger OOM. Work is in progress to remove the need for this in at least i915. Signed-off-by: Peter Zijlstra (Intel) Cc: Chris Wilson Cc: Daniel Vetter Cc: David Airlie Cc: Davidlohr Bueso Cc: Ding Tianhong Cc: Imre Deak Cc: Jason Low Cc: Linus Torvalds Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Rob Clark Cc: Terry Rudd Cc: Thomas Gleixner Cc: Tim Chen Cc: Will Deacon Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

drm/msm: Fix error handling crashes seen when VRAM allocation fails

2016-11-04T15:51:37Z

If VRAM allocation fails, the error handling path crashes in msm_drm_uninit(). The following changes are made to fix this: msm_gem_shrinker_cleanup() is fixed to unregister the shrinker only if it was init-ed in the first place. Before calling kms->funcs->destroy(), we check if kms->funcs is also non-NULL. This is needed for MDP5, since during msm_drm_int(), priv->kms becomes non-NULL early, but msm_kms_init() is called on it only later in mdp5_kms_init(). Signed-off-by: Archit Taneja Signed-off-by: Rob Clark Reviewed-by: Andy Gross

locking/drm: Kill mutex trickery

2016-10-25T09:31:50Z

Poking at lock internals is not cool. Since I'm going to change the implementation this will break, take it out. Tested-by: Jason Low Signed-off-by: Peter Zijlstra (Intel) Cc: Andrew Morton Cc: Chris Wilson Cc: Daniel Vetter Cc: Linus Torvalds Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Rob Clark Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

drm/msm: wire up vmap shrinker

2016-07-16T14:09:07Z

Signed-off-by: Rob Clark

drm/msm: shrinker support

2016-07-16T14:09:06Z

For a first step, only purge obj->madv==DONTNEED objects. We could be more agressive and next try unpinning inactive objects.. but that is only useful if you have swap. Signed-off-by: Rob Clark