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drm/i915: debugfs/i915_gem_seqno_info does not need rpm nor struct_mutex 

i915_gem_seqno_info() supplies its own spinlocks to access the waiters,
and doesn't need any GGTT or mmio access.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20160903065343.25151-1-chris@chris-wilson.co.uk
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
This commit is contained in:
Chris Wilson 2016-09-03 07:53:42 +01:00
parent 795b38b392
commit 02c53d99b6
1 changed files with 0 additions and 10 deletions
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10
drivers/gpu/drm/i915/i915_debugfs.c
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@ -714,21 +714,11 @@ static void i915_ring_seqno_info(struct seq_file *m,
static int i915_gem_seqno_info(struct seq_file *m, void *data)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct drm_device *dev = &dev_priv->drm;
struct intel_engine_cs *engine;
int ret;
ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret)
return ret;
intel_runtime_pm_get(dev_priv);
for_each_engine(engine, dev_priv)
i915_ring_seqno_info(m, engine);
intel_runtime_pm_put(dev_priv);
mutex_unlock(&dev->struct_mutex);
return 0;
}