Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 33f53719 authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Show waiters in i915_hangcheck_info 



It is convenient to know what processes are waiting when looking at
hangcheck status in debugfs.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161004201132.21801-8-chris@chris-wilson.co.uk
parent 1b36595f

drivers/gpu/drm/i915/i915_debugfs.c

+12 −0
Original line number Original line Diff line number Diff line
@@ -1353,6 +1353,9 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) 
		seq_printf(m, "Hangcheck inactive\n");

		seq_printf(m, "Hangcheck inactive\n");





	for_each_engine_id(engine, dev_priv, id) {

	for_each_engine_id(engine, dev_priv, id) {

		struct intel_breadcrumbs *b = &engine->breadcrumbs;

		struct rb_node *rb;



		seq_printf(m, "%s:\n", engine->name);

		seq_printf(m, "%s:\n", engine->name);

		seq_printf(m, "\tseqno = %x [current %x, last %x]\n",

		seq_printf(m, "\tseqno = %x [current %x, last %x]\n",

			   engine->hangcheck.seqno,

			   engine->hangcheck.seqno,
@@ -1362,6 +1365,15 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) 
			   yesno(intel_engine_has_waiter(engine)),

			   yesno(intel_engine_has_waiter(engine)),

			   yesno(test_bit(engine->id,

			   yesno(test_bit(engine->id,

					  &dev_priv->gpu_error.missed_irq_rings)));

					  &dev_priv->gpu_error.missed_irq_rings)));

		spin_lock(&b->lock);

		for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {

			struct intel_wait *w = container_of(rb, typeof(*w), node);



			seq_printf(m, "\t%s [%d] waiting for %x\n",

				   w->tsk->comm, w->tsk->pid, w->seqno);

		}

		spin_unlock(&b->lock);



		seq_printf(m, "\tACTHD = 0x%08llx [current 0x%08llx]\n",

		seq_printf(m, "\tACTHD = 0x%08llx [current 0x%08llx]\n",

			   (long long)engine->hangcheck.acthd,

			   (long long)engine->hangcheck.acthd,

			   (long long)acthd[id]);

			   (long long)acthd[id]);