From 9a851789e8a0cf38f9c04705a8e01b572e61f05f Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 18 Jun 2015 10:30:22 +0200 Subject: [PATCH] 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 Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_debugfs.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) 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}, -- 2.20.1