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drm/i915: Make debugfs/i915_gem_request more friendly

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

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson
2015-04-01 10:36:56 +01:00
committed by Daniel Vetter
parent f61cccf3e9
commit 2d1070b21e
1 changed files with 26 additions and 13 deletions
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39
drivers/gpu/drm/i915/i915_debugfs.c
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@@ -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;