If we get caught in a kernel bug, we may never idle. Let the user regain
control of their system^Wterminal by responding to SIGINT!
Reported-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index f3fa31d840f5..baf8b548621c 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3947,6 +3947,10 @@ i915_drop_caches_set(void *data, u64 val)
if (val & DROP_IDLE) {
do {
+ if (signal_pending(current)) {
+ ret = -EINTR;
+ goto out;
+ }
if (READ_ONCE(i915->gt.active_requests))
flush_delayed_work(&i915->gt.retire_work);
drain_delayed_work(&i915->gt.idle_work);
--
2.20.1
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