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drm/i915: Break up long runs of freeing objects 

Before freeing the next batch of objects from the worker, check if the
worker's timeslice has expired and if so, defer the next batch to the
next invocation of the worker.

Suggested-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170407102552.5781-3-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Chris Wilson 2017-04-07 11:25:51 +01:00
parent e92075ff7d
commit 5ad08be7e3
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/i915/i915_gem.c
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@ -4349,8 +4349,11 @@ static void __i915_gem_free_work(struct work_struct *work)
* unbound now.
*/
while ((freed = llist_del_all(&i915->mm.free_list)))
while ((freed = llist_del_all(&i915->mm.free_list))) {
__i915_gem_free_objects(i915, freed);
if (need_resched())
break;
}
}
static void __i915_gem_free_object_rcu(struct rcu_head *head)