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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-08-04 07:52:45 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-08-04 08:09:33 +0100 |
| commit | b1f788c6acb2f34622dd5f4c3d5210c6e3945e78 (patch) | |
| tree | a03c247cf86bee1df25f3271b504ad4b036264f5 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | b0decaf75bd902a11c932005c88924947ac00b8c (diff) | |
| download | lwn-b1f788c6acb2f34622dd5f4c3d5210c6e3945e78.tar.gz lwn-b1f788c6acb2f34622dd5f4c3d5210c6e3945e78.zip | |
drm/i915: Release vma when the handle is closed
In order to prevent a leak of the vma on shared objects, we need to
hook into the object_close callback to destroy the vma on the object for
this file. However, if we destroyed that vma immediately we may cause
unexpected application stalls as we try to unbind a busy vma - hence we
defer the unbind to when we retire the vma.
v2: Keep vma allocated until closed. This is useful for a later
optimisation, but it is required now in order to handle potential
recursion of i915_vma_unbind() by retiring itself.
v3: Comments are important.
Testcase: igt/gem_ppggtt/flink-and-close-vma-leak
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470293567-10811-26-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index a1c4c768c0c3..f470ea195253 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3014,8 +3014,8 @@ struct drm_i915_gem_object *i915_gem_object_create(struct drm_device *dev, size_t size); struct drm_i915_gem_object *i915_gem_object_create_from_data( struct drm_device *dev, const void *data, size_t size); +void i915_gem_close_object(struct drm_gem_object *gem, struct drm_file *file); void i915_gem_free_object(struct drm_gem_object *obj); -void i915_gem_vma_destroy(struct i915_vma *vma); /* Flags used by pin/bind&friends. */ #define PIN_MAPPABLE (1<<0) @@ -3048,6 +3048,8 @@ int __must_check i915_vma_unbind(struct i915_vma *vma); * _guarantee_ VMA in question is _not in use_ anywhere. */ int __must_check __i915_vma_unbind_no_wait(struct i915_vma *vma); +void i915_vma_close(struct i915_vma *vma); +void i915_vma_destroy(struct i915_vma *vma); int i915_gem_object_unbind(struct drm_i915_gem_object *obj); int i915_gem_object_put_pages(struct drm_i915_gem_object *obj); |