From af1465c36bf48bb590baaf475ea2796285bc1478 Mon Sep 17 00:00:00 2001
From: Danylo Piliaiev <dpiliaiev@igalia.com>
Date: Fri, 20 Jun 2025 17:26:48 +0200
Subject: [PATCH] tu/perfetto: Ignore events with zero duration

Zero duration can only happen when tracepoints did not happen on GPU.

Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35657>
---
 src/freedreno/vulkan/tu_perfetto.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/freedreno/vulkan/tu_perfetto.cc b/src/freedreno/vulkan/tu_perfetto.cc
index 30d366f0b6c..118a655b090 100644
--- a/src/freedreno/vulkan/tu_perfetto.cc
+++ b/src/freedreno/vulkan/tu_perfetto.cc
@@ -263,6 +263,11 @@ stage_end(struct tu_device *dev, uint64_t ts_ns, enum tu_stage_id stage_id,
    if (!stage)
       return;
 
+   uint64_t duration = ts_ns - stage->start_ts;
+   /* Zero duration can only happen when tracepoints did not happen on GPU. */
+   if (duration == 0)
+      return;
+
    if (stage->stage_id != stage_id) {
       PERFETTO_ELOG("stage %d ended while stage %d is expected",
             stage_id, stage->stage_id);