drm/i915: Show FBC worker status in debugfs

Include the pending update from the FBC worker in i915_fbc_status.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171220205848.8510-1-chris@chris-wilson.co.uk
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index c4780f0..3affcaa 100644 (file)
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1581,18 +1581,23 @@ static int i915_frontbuffer_tracking(struct seq_file *m, void *unused)
 static int i915_fbc_status(struct seq_file *m, void *unused)
 {
        struct drm_i915_private *dev_priv = node_to_i915(m->private);
+       struct intel_fbc *fbc = &dev_priv->fbc;
 
        if (!HAS_FBC(dev_priv))
                return -ENODEV;
 
        intel_runtime_pm_get(dev_priv);
-       mutex_lock(&dev_priv->fbc.lock);
+       mutex_lock(&fbc->lock);
 
        if (intel_fbc_is_active(dev_priv))
                seq_puts(m, "FBC enabled\n");
        else
-               seq_printf(m, "FBC disabled: %s\n",
-                          dev_priv->fbc.no_fbc_reason);
+               seq_printf(m, "FBC disabled: %s\n", fbc->no_fbc_reason);
+
+       if (fbc->work.scheduled)
+               seq_printf(m, "FBC worker scheduled on vblank %u, now %llu\n",
+                          fbc->work.scheduled_vblank,
+                          drm_crtc_vblank_count(&fbc->crtc->base));
 
        if (intel_fbc_is_active(dev_priv)) {
                u32 mask;
@@ -1612,7 +1617,7 @@ static int i915_fbc_status(struct seq_file *m, void *unused)
                seq_printf(m, "Compressing: %s\n", yesno(mask));
        }
 
-       mutex_unlock(&dev_priv->fbc.lock);
+       mutex_unlock(&fbc->lock);
        intel_runtime_pm_put(dev_priv);
 
        return 0;