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drm/i915/gem: Distinguish each object type

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Separate each object class into a separate lock type to avoid lockdep
cross-contamination between paths (i.e. userptr!).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191022144501.26486-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-10-22 15:45:01 +01:00
parent a201b00e52
commit 7867d70995
12 changed files with 28 additions and 15 deletions
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5
drivers/gpu/drm/i915/gem/i915_gem_object.c
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@@ -47,9 +47,10 @@ void i915_gem_object_free(struct drm_i915_gem_object *obj)
}
void i915_gem_object_init(struct drm_i915_gem_object *obj,
const struct drm_i915_gem_object_ops *ops)
const struct drm_i915_gem_object_ops *ops,
struct lock_class_key *key)
{
mutex_init(&obj->mm.lock);
__mutex_init(&obj->mm.lock, "obj->mm.lock", key);
spin_lock_init(&obj->vma.lock);
INIT_LIST_HEAD(&obj->vma.list);