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| author | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2015-02-05 18:41:48 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2015-02-09 14:29:36 +0200 |
| commit | ebbc7546d2099c94ff2ea940ae5ce740e512a66d (patch) | |
| tree | f3cd76d630f13eac99b037919591bd522b15f9ea /drivers/gpu/drm/i915 | |
| parent | d180d2bbb66579e3bf449642b8ec2a76f4014fcd (diff) | |
| download | linux-ebbc7546d2099c94ff2ea940ae5ce740e512a66d.tar.bz2 | |
drm/i915: Take runtime pm reference on hangcheck_info
We read the coherent current seqno and actual head from ring.
For hardware access we need to take runtime_pm reference.
Get hardware specific values with runtime reference held
and print them first to emphasize hw state vs bookkeepping.
v2: Reorder output according to hw access (Chris)
remove superfluous locking (Daniel)
Testcase: igt/pm_rpm/debugfs-read
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88910
Tested-by: Ding Heng <hengx.ding@intel.com> (v1)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 211d4949a675..96e811fe24ca 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1223,8 +1223,11 @@ out: 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 drm_device *dev = node->minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; struct intel_engine_cs *ring; + u64 acthd[I915_NUM_RINGS]; + u32 seqno[I915_NUM_RINGS]; int i; if (!i915.enable_hangcheck) { @@ -1232,6 +1235,15 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) return 0; } + intel_runtime_pm_get(dev_priv); + + for_each_ring(ring, dev_priv, i) { + seqno[i] = ring->get_seqno(ring, false); + acthd[i] = intel_ring_get_active_head(ring); + } + + intel_runtime_pm_put(dev_priv); + 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 - @@ -1242,14 +1254,14 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) 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); + ring->hangcheck.seqno, seqno[i]); seq_printf(m, "\tACTHD = 0x%08llx [current 0x%08llx]\n", (long long)ring->hangcheck.acthd, - (long long)intel_ring_get_active_head(ring)); + (long long)acthd[i]); seq_printf(m, "\tmax ACTHD = 0x%08llx\n", (long long)ring->hangcheck.max_acthd); + seq_printf(m, "\tscore = %d\n", ring->hangcheck.score); + seq_printf(m, "\taction = %d\n", ring->hangcheck.action); } return 0; |