From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Add a tracepoint to see exactly when async flips complete.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
.../gpu/drm/i915/display/intel_display_irq.c | 1 +
.../drm/i915/display/intel_display_trace.h | 23 +++++++++++++++++++
2 files changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c b/drivers/gpu/drm/i915/display/intel_display_irq.c
index 82e1369e5d76..cf886b9edeb8 100644
--- a/drivers/gpu/drm/i915/display/intel_display_irq.c
+++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
@@ -346,6 +346,7 @@ static void flip_done_handler(struct drm_i915_private *i915,
spin_lock(&i915->drm.event_lock);
if (crtc->flip_done_event) {
+ trace_intel_crtc_flip_done(crtc);
drm_crtc_send_vblank_event(&crtc->base, crtc->flip_done_event);
crtc->flip_done_event = NULL;
}
diff --git a/drivers/gpu/drm/i915/display/intel_display_trace.h b/drivers/gpu/drm/i915/display/intel_display_trace.h
index 34c223ace5ea..c734ef1fba3c 100644
--- a/drivers/gpu/drm/i915/display/intel_display_trace.h
+++ b/drivers/gpu/drm/i915/display/intel_display_trace.h
@@ -78,6 +78,29 @@ TRACE_EVENT(intel_pipe_disable,
__entry->frame[PIPE_C], __entry->scanline[PIPE_C])
);
+TRACE_EVENT(intel_crtc_flip_done,
+ TP_PROTO(struct intel_crtc *crtc),
+ TP_ARGS(crtc),
+
+ TP_STRUCT__entry(
+ __string(dev, __dev_name_kms(crtc))
+ __field(enum pipe, pipe)
+ __field(u32, frame)
+ __field(u32, scanline)
+ ),
+
+ TP_fast_assign(
+ __assign_str(dev);
+ __entry->pipe = crtc->pipe;
+ __entry->frame = intel_crtc_get_vblank_counter(crtc);
+ __entry->scanline = intel_get_crtc_scanline(crtc);
+ ),
+
+ TP_printk("dev %s, pipe %c, frame=%u, scanline=%u",
+ __get_str(dev), pipe_name(__entry->pipe),
+ __entry->frame, __entry->scanline)
+);
+
TRACE_EVENT(intel_pipe_crc,
TP_PROTO(struct intel_crtc *crtc, const u32 *crcs),
TP_ARGS(crtc, crcs),
--
2.44.2
