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drm/i915: Abandon oom quickly if killed by a signal 

Whilst waiting to obtain our locks for the last resort shrinking before
an oom, we check whether or not a fatal signal was pending. If there was,
we do not need to keep waiting as the oom will be aborted.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2014-07-11 11:28:00 +01:00 committed by Daniel Vetter
parent ed57cb8a5c
commit a1db2fa7c8
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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@ -5194,8 +5194,11 @@ i915_gem_shrinker_oom(struct notifier_block *nb, unsigned long event, void *ptr)
bool was_interruptible;
bool unlock;
while (!i915_gem_shrinker_lock(dev, &unlock) && --timeout)
while (!i915_gem_shrinker_lock(dev, &unlock) && --timeout) {
schedule_timeout_killable(1);
if (fatal_signal_pending(current))
return NOTIFY_DONE;
}
if (timeout == 0) {
pr_err("Unable to purge GPU memory due lock contention.\n");
return NOTIFY_DONE;