drm/msm/shrinker: Only iterate dontneed objs

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In situations where the GPU is mostly idle, all or nearly all buffer
objects will be in the inactive list.  But if the system is under memory
pressure (from something other than GPU), we could still get a lot of
shrinker calls.  Which results in traversing a list of thousands of objs
and in the end finding nothing to shrink.  Which isn't so efficient.

Instead split the inactive_list into two lists, one inactive objs which
are shrinkable, and a second one for those that are not.  This way we
can avoid traversing objs which we know are not shrinker candidates.

v2: Fix inverted logic think-o

Signed-off-by: Rob Clark <robdclark@chromium.org>

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This commit is contained in:

Rob Clark 2020-11-16 09:48:51 -08:00

parent fcd371c23c

commit 3edfa30f23

5 changed files with 40 additions and 15 deletions

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3

drivers/gpu/drm/msm/msm_debugfs.c

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3

drivers/gpu/drm/msm/msm_drv.c

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8

drivers/gpu/drm/msm/msm_drv.h

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34

drivers/gpu/drm/msm/msm_gem.c

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7

drivers/gpu/drm/msm/msm_gem_shrinker.c

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