diff options
| author | Matthew Auld <matthew.auld@intel.com> | 2019-10-08 17:01:16 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-08 20:50:01 +0100 |
| commit | 7c98501acb94318819f5ea764fc3aae09f69aff6 (patch) | |
| tree | 141e7324dafb25bdc9d05807535650df39b811f6 /drivers/gpu/drm/i915/gem/i915_gem_region.c | |
| parent | 2f0b97ca02118630132dddf258fbdb5d5f5ec32a (diff) | |
drm/i915/region: support volatile objects
Volatile objects are marked as DONTNEED while pinned, therefore once
unpinned the backing store can be discarded. This is limited to kernel
internal objects.
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: CQ Tang <cq.tang@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191008160116.18379-4-matthew.auld@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_region.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_region.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_region.c b/drivers/gpu/drm/i915/gem/i915_gem_region.c index d94914a86737..d3f7733bc7ed 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_region.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_region.c @@ -107,11 +107,26 @@ void i915_gem_object_init_memory_region(struct drm_i915_gem_object *obj, INIT_LIST_HEAD(&obj->mm.blocks); obj->mm.region = intel_memory_region_get(mem); obj->flags |= flags; + + mutex_lock(&mem->objects.lock); + + if (obj->flags & I915_BO_ALLOC_VOLATILE) + list_add(&obj->mm.region_link, &mem->objects.purgeable); + else + list_add(&obj->mm.region_link, &mem->objects.list); + + mutex_unlock(&mem->objects.lock); } void i915_gem_object_release_memory_region(struct drm_i915_gem_object *obj) { - intel_memory_region_put(obj->mm.region); + struct intel_memory_region *mem = obj->mm.region; + + mutex_lock(&mem->objects.lock); + list_del(&obj->mm.region_link); + mutex_unlock(&mem->objects.lock); + + intel_memory_region_put(mem); } struct drm_i915_gem_object * |