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Commit f654449a authored by Chris Wilson's avatar Chris Wilson Committed by Daniel Vetter
Browse files

drm/i915: Display current hangcheck status in debugfs 



For example,

/sys/kernel/debug/dri/0/i915_hangcheck_info:

Hangcheck active, fires in 15887800ms
render ring:
        seqno = -4059 [current -583]
        action = 2
        score = 0
        ACTHD = 1ee8 [current 21f980]
        max ACTHD = 0

v2: Include expiration ETA. Can anyone spot a problem?
v3: Convert for workqueued hangcheck (Mika)
v4: Print seqnos as unsigned ints (Ville)
v5: Print seqnos as hex (Chris)

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he@intel.com) (v2)
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (v2)
Signed-off-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 737b1506

drivers/gpu/drm/i915/i915_debugfs.c

+36 −0
Original line number Original line Diff line number Diff line
@@ -1220,6 +1220,41 @@ static int i915_frequency_info(struct seq_file *m, void *unused) 
	return ret;

	return ret;

}

}





static int i915_hangcheck_info(struct seq_file *m, void *unused)

{

	struct drm_info_node *node = m->private;

	struct drm_i915_private *dev_priv = to_i915(node->minor->dev);

	struct intel_engine_cs *ring;

	int i;



	if (!i915.enable_hangcheck) {

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

		return 0;

	}



	if (delayed_work_pending(&dev_priv->gpu_error.hangcheck_work)) {

		seq_printf(m, "Hangcheck active, fires in %dms\n",

			   jiffies_to_msecs(dev_priv->gpu_error.hangcheck_work.timer.expires -

					    jiffies));

	} else

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



	for_each_ring(ring, dev_priv, i) {

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

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

			   ring->hangcheck.seqno, ring->get_seqno(ring, false));

		seq_printf(m, "\taction = %d\n", ring->hangcheck.action);

		seq_printf(m, "\tscore = %d\n", ring->hangcheck.score);

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

			   (long long)ring->hangcheck.acthd,

			   (long long)intel_ring_get_active_head(ring));

		seq_printf(m, "\tmax ACTHD = 0x%08llx\n",

			   (long long)ring->hangcheck.max_acthd);

	}



	return 0;

}



static int ironlake_drpc_info(struct seq_file *m)

static int ironlake_drpc_info(struct seq_file *m)

{

{

	struct drm_info_node *node = m->private;

	struct drm_info_node *node = m->private;
@@ -4402,6 +4437,7 @@ static const struct drm_info_list i915_debugfs_list[] = { 
	{"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},

	{"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},

	{"i915_gem_batch_pool", i915_gem_batch_pool_info, 0},

	{"i915_gem_batch_pool", i915_gem_batch_pool_info, 0},

	{"i915_frequency_info", i915_frequency_info, 0},

	{"i915_frequency_info", i915_frequency_info, 0},

	{"i915_hangcheck_info", i915_hangcheck_info, 0},

	{"i915_drpc_info", i915_drpc_info, 0},

	{"i915_drpc_info", i915_drpc_info, 0},

	{"i915_emon_status", i915_emon_status, 0},

	{"i915_emon_status", i915_emon_status, 0},

	{"i915_ring_freq_table", i915_ring_freq_table, 0},

	{"i915_ring_freq_table", i915_ring_freq_table, 0},