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Commit 2d1070b2 authored by Chris Wilson's avatar Chris Wilson Committed by Daniel Vetter
Browse files

drm/i915: Make debugfs/i915_gem_request more friendly 



Count the number of requests in a ring for the user and show who
submitted them.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent f61cccf3

drivers/gpu/drm/i915/i915_debugfs.c

+26 −13
Original line number Diff line number Diff line
@@ -643,31 +643,44 @@ static int i915_gem_request_info(struct seq_file *m, void *data) 
	struct drm_device *dev = node->minor->dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct intel_engine_cs *ring;

	struct drm_i915_gem_request *gem_request;

	int ret, count, i;

	struct drm_i915_gem_request *rq;

	int ret, any, i;



	ret = mutex_lock_interruptible(&dev->struct_mutex);

	if (ret)

		return ret;



	count = 0;

	any = 0;

	for_each_ring(ring, dev_priv, i) {

		if (list_empty(&ring->request_list))

		int count;



		count = 0;

		list_for_each_entry(rq, &ring->request_list, list)

			count++;

		if (count == 0)

			continue;



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

		list_for_each_entry(gem_request,

				    &ring->request_list,

				    list) {

			seq_printf(m, "    %x @ %d\n",

				   gem_request->seqno,

				   (int) (jiffies - gem_request->emitted_jiffies));

		seq_printf(m, "%s requests: %d\n", ring->name, count);

		list_for_each_entry(rq, &ring->request_list, list) {

			struct task_struct *task;



			rcu_read_lock();

			task = NULL;

			if (rq->pid)

				task = pid_task(rq->pid, PIDTYPE_PID);

			seq_printf(m, "    %x @ %d: %s [%d]\n",

				   rq->seqno,

				   (int) (jiffies - rq->emitted_jiffies),

				   task ? task->comm : "<unknown>",

				   task ? task->pid : -1);

			rcu_read_unlock();

		}

		count++;



		any++;

	}

	mutex_unlock(&dev->struct_mutex);



	if (count == 0)

	if (any == 0)

		seq_puts(m, "No requests\n");



	return 0;