[Intel-gfx] [PATCH] drm/i915: Show waiter's status on engine dump

Chris Wilson chris at chris-wilson.co.uk
Wed Nov 21 13:09:50 UTC 2018

When showing the list of waiters, include the task's status so that we
can tell if they have been woken up and are waiting for the CPU, or if
they are still waiting to be woken.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
 drivers/gpu/drm/i915/intel_engine_cs.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 885a901b6e13..f6554d5eb1cf 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1562,8 +1562,10 @@ void intel_engine_dump(struct intel_engine_cs *engine,
 	for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
 		struct intel_wait *w = rb_entry(rb, typeof(*w), node);
-		drm_printf(m, "\t%s [%d] waiting for %x\n",
-			   w->tsk->comm, w->tsk->pid, w->seqno);
+		drm_printf(m, "\t%s [%d] (state:%lx, %s) waiting for %x\n",
+			   w->tsk->comm, w->tsk->pid, w->tsk->state,
+			   w->tsk->state & TASK_NORMAL ? "asleep" : "runnable",
+			   w->seqno);

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