drm/i915: debugfs/i915_gem_seqno_info does not need rpm nor struct_mutex (02c53d99) · Commits · 戴 / test

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

drivers/gpu/drm/i915/i915_debugfs.c

+0 −10

Original line number	Diff line number	Diff line
		@@ -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;
		}