[mutter] renderer/native: Add tracing for 2nd GPU copies

[Jonas Ådahl <jadahl src gnome org>]

commit 720f3632419a54daab06ea2a75faaa3dd3023398
Author: Pekka Paalanen <pekka paalanen collabora com>
Date:   Tue Jun 11 11:16:39 2019 +0300

    renderer/native: Add tracing for 2nd GPU copies
    
    These traces allow seeing how long the copy operations stall in libmutter, and
    which copy operations actually get used.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/615

 src/backends/native/meta-renderer-native.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
---
diff --git a/src/backends/native/meta-renderer-native.c b/src/backends/native/meta-renderer-native.c
index 5aa3af472..d2aba0ce9 100644
--- a/src/backends/native/meta-renderer-native.c
+++ b/src/backends/native/meta-renderer-native.c
@@ -70,6 +70,7 @@
 #include "backends/native/meta-renderer-native.h"
 #include "cogl/cogl.h"
 #include "cogl/cogl-framebuffer.h"
+#include "cogl/cogl-trace.h"
 #include "core/boxes-private.h"
 
 #ifndef EGL_DRM_MASTER_FD_EXT
@@ -1773,6 +1774,9 @@ copy_shared_framebuffer_gpu (CoglOnscreen                        *onscreen,
   MetaDrmBufferGbm *buffer_gbm;
   struct gbm_bo *bo;
 
+  COGL_TRACE_BEGIN_SCOPED (CopySharedFramebufferSecondaryGpu,
+                           "FB Copy (secondary GPU)");
+
   if (!meta_egl_make_current (egl,
                               renderer_gpu_data->egl_display,
                               secondary_gpu_state->egl_surface,
@@ -1867,6 +1871,9 @@ copy_shared_framebuffer_primary_gpu (CoglOnscreen                        *onscre
   CoglOffscreen *cogl_fbo;
   int ret;
 
+  COGL_TRACE_BEGIN_SCOPED (CopySharedFramebufferPrimaryGpu,
+                           "FB Copy (primary GPU)");
+
   primary_gpu_data = meta_renderer_native_get_gpu_data (renderer_native,
                                                         renderer_native->primary_gpu_kms);
   if (!primary_gpu_data->secondary.has_EGL_EXT_image_dma_buf_import_modifiers)
@@ -2030,6 +2037,9 @@ copy_shared_framebuffer_cpu (CoglOnscreen                        *onscreen,
   gboolean ret;
   MetaDrmBufferDumb *buffer_dumb;
 
+  COGL_TRACE_BEGIN_SCOPED (CopySharedFramebufferCpu,
+                           "FB Copy (CPU)");
+
   dumb_fb = secondary_gpu_get_next_dumb_buffer (secondary_gpu_state);
 
   g_assert (cogl_framebuffer_get_width (framebuffer) == dumb_fb->width);