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drm/i915/breadcrumbs: Reduce missed-breadcrumb false positive rate 

Change the on-cpu check to on-runqueue to catch if the waiter has been
woken (and reset its current_state back to TASK_UNINTERRUPTIBLE to
perform the seqno check) but is sleeping due to being preempted off the
cpu.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181203113701.12106-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-12-03 11:36:54 +00:00
parent 949fc52af1
commit 26af893184
1 changed files with 1 additions and 5 deletions
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6
drivers/gpu/drm/i915/intel_breadcrumbs.c
View File

@ -27,11 +27,7 @@
#include "i915_drv.h"
#ifdef CONFIG_SMP
#define task_asleep(tsk) ((tsk)->state & TASK_NORMAL && !(tsk)->on_cpu)
#else
#define task_asleep(tsk) ((tsk)->state & TASK_NORMAL)
#endif
#define task_asleep(tsk) ((tsk)->state & TASK_NORMAL && !(tsk)->on_rq)
static unsigned int __intel_breadcrumbs_wakeup(struct intel_breadcrumbs *b)
{