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

diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 885a901..759c0fd 100644 (file)
--- 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);