From 912d572d63b8cd19c303f357b627de492bd6bdef Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 6 Sep 2017 16:19:30 -0700 Subject: drm/i915: wire up shrinkctl->nr_scanned shrink_slab() allows us to report back the number of objects we successfully scanned (out of the target shrinkctl->nr_to_scan). As report the number of pages owned by each GEM object as a separate item to the shrinker, we cannot precisely control the number of shrinker objects we scan on each pass; and indeed may free more than requested. If we fail to tell the shrinker about the number of objects we process, it will continue to hold a grudge against us as any objects left unscanned are added to the next reclaim -- and so we will keep on "unfairly" shrinking our own slab in comparison to other slabs. Link: http://lkml.kernel.org/r/20170822135325.9191-2-chris@chris-wilson.co.uk Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Cc: Michal Hocko Cc: Johannes Weiner Cc: Hillf Danton Cc: Minchan Kim Cc: Vlastimil Babka Cc: Mel Gorman Cc: Shaohua Li Cc: Christoph Lameter Cc: David Rientjes Cc: Joonsoo Kim Cc: Pekka Enberg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/gpu/drm/i915/i915_debugfs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/i915/i915_debugfs.c') diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index a36216bd2a84..e4d4b6b41e26 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -4308,10 +4308,10 @@ i915_drop_caches_set(void *data, u64 val) fs_reclaim_acquire(GFP_KERNEL); if (val & DROP_BOUND) - i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_BOUND); + i915_gem_shrink(dev_priv, LONG_MAX, NULL, I915_SHRINK_BOUND); if (val & DROP_UNBOUND) - i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_UNBOUND); + i915_gem_shrink(dev_priv, LONG_MAX, NULL, I915_SHRINK_UNBOUND); if (val & DROP_SHRINK_ALL) i915_gem_shrink_all(dev_priv); -- cgit v1.2.3-59-g8ed1b