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drm/i915: Include GT/seqno activity in engine/hangcheck debugfs
Whilst investigating some mysterious failures with hangcheck not running during gem_busy/basic-hang-default, the question is why did we decide to cancel the retire_work (which queues the hangcheck)? That decision is based around GT activity, so include that information in the debug report. v2: Include the GT awake status in the error state Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170302150356.9713-1-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
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drivers/gpu/drm/i915
@ -1361,14 +1361,17 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused)
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} else
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seq_printf(m, "Hangcheck inactive\n");
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seq_printf(m, "GT active? %s\n", yesno(dev_priv->gt.awake));
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for_each_engine(engine, dev_priv, id) {
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struct intel_breadcrumbs *b = &engine->breadcrumbs;
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struct rb_node *rb;
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seq_printf(m, "%s:\n", engine->name);
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seq_printf(m, "\tseqno = %x [current %x, last %x]\n",
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seq_printf(m, "\tseqno = %x [current %x, last %x], inflight %d\n",
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engine->hangcheck.seqno, seqno[id],
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intel_engine_last_submit(engine));
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intel_engine_last_submit(engine),
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engine->timeline->inflight_seqnos);
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seq_printf(m, "\twaiters? %s, fake irq active? %s, stalled? %s\n",
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yesno(intel_engine_has_waiter(engine)),
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yesno(test_bit(engine->id,
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@ -3253,6 +3256,11 @@ static int i915_engine_info(struct seq_file *m, void *unused)
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intel_runtime_pm_get(dev_priv);
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seq_printf(m, "GT awake? %s\n",
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yesno(dev_priv->gt.awake));
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seq_printf(m, "Global active requests: %d\n",
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dev_priv->gt.active_requests);
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for_each_engine(engine, dev_priv, id) {
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struct intel_breadcrumbs *b = &engine->breadcrumbs;
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struct drm_i915_gem_request *rq;
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@ -3260,11 +3268,12 @@ static int i915_engine_info(struct seq_file *m, void *unused)
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u64 addr;
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seq_printf(m, "%s\n", engine->name);
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seq_printf(m, "\tcurrent seqno %x, last %x, hangcheck %x [%d ms]\n",
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seq_printf(m, "\tcurrent seqno %x, last %x, hangcheck %x [%d ms], inflight %d\n",
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intel_engine_get_seqno(engine),
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intel_engine_last_submit(engine),
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engine->hangcheck.seqno,
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jiffies_to_msecs(jiffies - engine->hangcheck.action_timestamp));
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jiffies_to_msecs(jiffies - engine->hangcheck.action_timestamp),
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engine->timeline->inflight_seqnos);
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rcu_read_lock();
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@ -934,6 +934,7 @@ struct i915_gpu_state {
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char error_msg[128];
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bool simulated;
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bool awake;
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int iommu;
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u32 reset_count;
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u32 suspend_count;
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@ -632,6 +632,7 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
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CSR_VERSION_MINOR(csr->version));
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}
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err_printf(m, "GT awake: %s\n", yesno(error->awake));
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err_printf(m, "EIR: 0x%08x\n", error->eir);
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err_printf(m, "IER: 0x%08x\n", error->ier);
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for (i = 0; i < error->ngtier; i++)
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@ -1615,6 +1616,8 @@ static void i915_error_capture_msg(struct drm_i915_private *dev_priv,
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static void i915_capture_gen_state(struct drm_i915_private *dev_priv,
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struct i915_gpu_state *error)
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{
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error->awake = dev_priv->gt.awake;
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error->iommu = -1;
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#ifdef CONFIG_INTEL_IOMMU
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error->iommu = intel_iommu_gfx_mapped;
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