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drm/i915: Extend debugfs/i915_drop_caches to call i915_gem_shrink_all() 

Sometimes we want to explicitly page out all available objects from igt,
i.e. call i915_gem_shrink_all() and check that subsequent operations
succeed. This adds DROP_SHRINK_ALL [0x8] to the set of flags for
debugfs/i915_drop_caches for that purpose.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170308144622.23194-1-chris@chris-wilson.co.uk
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2017-03-08 14:46:22 +00:00
parent 504ae40241
commit 8eadc19b38
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/i915/i915_debugfs.c
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@ -4231,11 +4231,13 @@ DEFINE_SIMPLE_ATTRIBUTE(i915_ring_test_irq_fops,
#define DROP_RETIRE 0x4
#define DROP_ACTIVE 0x8
#define DROP_FREED 0x10
#define DROP_SHRINK_ALL 0x20
#define DROP_ALL (DROP_UNBOUND | \
DROP_BOUND | \
DROP_RETIRE | \
DROP_ACTIVE | \
DROP_FREED)
DROP_FREED | \
DROP_SHRINK_ALL)
static int
i915_drop_caches_get(void *data, u64 *val)
{
@ -4276,6 +4278,9 @@ i915_drop_caches_set(void *data, u64 val)
if (val & DROP_UNBOUND)
i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_UNBOUND);
if (val & DROP_SHRINK_ALL)
i915_gem_shrink_all(dev_priv);
unlock:
mutex_unlock(&dev->struct_mutex);