drm/i915: Abandon oom quickly if killed by a signal
authorChris Wilson <chris@chris-wilson.co.uk>
Fri, 11 Jul 2014 10:28:00 +0000 (11:28 +0100)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 23 Jul 2014 05:05:28 +0000 (07:05 +0200)
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>
drivers/gpu/drm/i915/i915_gem.c

index e5d4d73a9844de5c36ea5df401a8b8f8ac986724..ef047bce008dd209ddf67167b3faaecc82a8a716 100644 (file)
@@ -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;