diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_breadcrumbs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_breadcrumbs.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c index 308c56a021ab..9ccbf26124c6 100644 --- a/drivers/gpu/drm/i915/intel_breadcrumbs.c +++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c @@ -580,6 +580,8 @@ static int intel_breadcrumbs_signaler(void *arg) signaler_set_rtpriority(); do { + bool do_schedule = true; + set_current_state(TASK_INTERRUPTIBLE); /* We are either woken up by the interrupt bottom-half, @@ -626,7 +628,18 @@ static int intel_breadcrumbs_signaler(void *arg) spin_unlock_irq(&b->rb_lock); i915_gem_request_put(request); - } else { + + /* If the engine is saturated we may be continually + * processing completed requests. This angers the + * NMI watchdog if we never let anything else + * have access to the CPU. Let's pretend to be nice + * and relinquish the CPU if we burn through the + * entire RT timeslice! + */ + do_schedule = need_resched(); + } + + if (unlikely(do_schedule)) { DEFINE_WAIT(exec); if (kthread_should_park()) |