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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-06-18 10:30:22 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-06-24 00:22:35 +0200 |
| commit | 9a851789e8a0cf38f9c04705a8e01b572e61f05f (patch) | |
| tree | 5ed0d177d98de0fa93f889d84341ffb396516b50 /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | 27e78a2a1f92e79707b4fb18cff1276088ef9178 (diff) | |
| download | lwn-9a851789e8a0cf38f9c04705a8e01b572e61f05f.tar.gz lwn-9a851789e8a0cf38f9c04705a8e01b572e61f05f.zip | |
drm/i915: debugfs for frontbuffer tracking
Useful to figure out whether stuck bits are due to the frontbuffer
tracking code as opposed to individual consumers (who have their own
bitmask tracking).
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 35a5defe7e29..495a6376cf39 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1581,6 +1581,21 @@ static int i915_drpc_info(struct seq_file *m, void *unused) return ironlake_drpc_info(m); } +static int i915_frontbuffer_tracking(struct seq_file *m, void *unused) +{ + struct drm_info_node *node = m->private; + struct drm_device *dev = node->minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + + seq_printf(m, "FB tracking busy bits: 0x%08x\n", + dev_priv->fb_tracking.busy_bits); + + seq_printf(m, "FB tracking flip bits: 0x%08x\n", + dev_priv->fb_tracking.flip_bits); + + return 0; +} + static int i915_fbc_status(struct seq_file *m, void *unused) { struct drm_info_node *node = m->private; @@ -5021,6 +5036,7 @@ static const struct drm_info_list i915_debugfs_list[] = { {"i915_drpc_info", i915_drpc_info, 0}, {"i915_emon_status", i915_emon_status, 0}, {"i915_ring_freq_table", i915_ring_freq_table, 0}, + {"i915_frontbuffer_tracking", i915_frontbuffer_tracking, 0}, {"i915_fbc_status", i915_fbc_status, 0}, {"i915_ips_status", i915_ips_status, 0}, {"i915_sr_status", i915_sr_status, 0}, |