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drm/i915: Add gem object locking to madvise.

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Doesn't need the full ww lock, only checking if pages are bound.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> #irc
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-7-maarten.lankhorst@linux.intel.com
This commit is contained in:
Maarten Lankhorst 2021-03-23 16:49:55 +01:00 committed by Daniel Vetter
parent 1eef0de18f
commit aaee716e4a
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/i915/i915_gem.c
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@ -963,10 +963,14 @@ i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
if (!obj)
return -ENOENT;
err = mutex_lock_interruptible(&obj->mm.lock);
err = i915_gem_object_lock_interruptible(obj, NULL);
if (err)
goto out;
err = mutex_lock_interruptible(&obj->mm.lock);
if (err)
goto out_ww;
if (i915_gem_object_has_pages(obj) &&
i915_gem_object_is_tiled(obj) &&
i915->quirks & QUIRK_PIN_SWIZZLED_PAGES) {
@ -1011,6 +1015,8 @@ i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
args->retained = obj->mm.madv != __I915_MADV_PURGED;
mutex_unlock(&obj->mm.lock);
out_ww:
i915_gem_object_unlock(obj);
out:
i915_gem_object_put(obj);
return err;