iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/i915/ttm: ensure we unmap when purging

Browse Source 
Purging can happen during swapping out, or directly invoked with the
madvise ioctl. In such cases this doesn't involve a ttm move, which
skips umapping the object.

v2(Thomas):
- add ttm_truncate helper, and just call into i915_ttm_move_notify() to
  handle the unmapping step

Fixes: 213d50927763 ("drm/i915/ttm: Introduce a TTM i915 gem object backend")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220106174910.280616-4-matthew.auld@intel.com
(cherry picked from commit ab4911b7d411ab2ef3b38322178b9138e156c393)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
This commit is contained in:
Matthew Auld 2022-01-06 17:49:10 +00:00 committed by Tvrtko Ursulin
parent 8ee262ba79
commit 6ef295e342
1 changed files with 15 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/drm/i915/gem/i915_gem_ttm.c
View File

@ -556,6 +556,20 @@ i915_ttm_resource_get_st(struct drm_i915_gem_object *obj,
return intel_region_ttm_resource_to_rsgt(obj->mm.region, res);
}
static int i915_ttm_truncate(struct drm_i915_gem_object *obj)
{
struct ttm_buffer_object *bo = i915_gem_to_ttm(obj);
int err;
WARN_ON_ONCE(obj->mm.madv == I915_MADV_WILLNEED);
err = i915_ttm_move_notify(bo);
if (err)
return err;
return i915_ttm_purge(obj);
}
static void i915_ttm_swap_notify(struct ttm_buffer_object *bo)
{
struct drm_i915_gem_object *obj = i915_ttm_to_gem(bo);
@ -962,7 +976,7 @@ static const struct drm_i915_gem_object_ops i915_gem_ttm_obj_ops = {
.get_pages = i915_ttm_get_pages,
.put_pages = i915_ttm_put_pages,
.truncate = i915_ttm_purge,
.truncate = i915_ttm_truncate,
.shrinker_release_pages = i915_ttm_shrinker_release_pages,
.adjust_lru = i915_ttm_adjust_lru,