drm/i915: Show waiter's status on engine dump

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.

v2: task_state_to_char()

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181121151653.24595-1-chris@chris-wilson.co.uk

1 files 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..759c0fd58f8c 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:%c] waiting for %x\n",
+                           w->tsk->comm, w->tsk->pid,
+                           task_state_to_char(w->tsk),
+                           w->seqno);
         }
         spin_unlock(&b->rb_lock);
         local_irq_restore(flags);