From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Add trace points for observing the atomic pipe update mechanism.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_trace.h | 77 +++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_sprite.c | 6 +++
2 files changed, 83 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index 6e580c9..9ffb232 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -7,6 +7,7 @@
#include <drm/drmP.h>
#include "i915_drv.h"
+#include "intel_drv.h"
#include "intel_ringbuffer.h"
#undef TRACE_SYSTEM
@@ -14,6 +15,82 @@
#define TRACE_SYSTEM_STRING __stringify(TRACE_SYSTEM)
#define TRACE_INCLUDE_FILE i915_trace
+/* pipe updates */
+
+TRACE_EVENT(i915_pipe_update_start,
+ TP_PROTO(struct drm_crtc *crtc, u32 min, u32 max),
+ TP_ARGS(crtc, min, max),
+
+ TP_STRUCT__entry(
+ __field(enum pipe, pipe)
+ __field(u32, frame)
+ __field(u32, scanline)
+ __field(u32, min)
+ __field(u32, max)
+ ),
+
+ TP_fast_assign(
+ __entry->pipe = to_intel_crtc(crtc)->pipe;
+ __entry->frame = crtc->dev->driver->get_vblank_counter(crtc->dev,
+ to_intel_crtc(crtc)->pipe);
+ __entry->scanline = i915_get_crtc_scanline(crtc);
+ __entry->min = min;
+ __entry->max = max;
+ ),
+
+ TP_printk("pipe %c, frame=%u, scanline=%u, min=%u, max=%u",
+ pipe_name(__entry->pipe), __entry->frame,
+ __entry->scanline, __entry->min, __entry->max)
+);
+
+TRACE_EVENT(i915_pipe_update_vblank_evaded,
+ TP_PROTO(struct drm_crtc *crtc, u32 min, u32 max),
+ TP_ARGS(crtc, min, max),
+
+ TP_STRUCT__entry(
+ __field(enum pipe, pipe)
+ __field(u32, frame)
+ __field(u32, scanline)
+ __field(u32, min)
+ __field(u32, max)
+ ),
+
+ TP_fast_assign(
+ __entry->pipe = to_intel_crtc(crtc)->pipe;
+ __entry->frame = crtc->dev->driver->get_vblank_counter(crtc->dev,
+ to_intel_crtc(crtc)->pipe);
+ __entry->scanline = i915_get_crtc_scanline(crtc);
+ __entry->min = min;
+ __entry->max = max;
+ ),
+
+ TP_printk("pipe %c, frame=%u, scanline=%u, min=%u, max=%u",
+ pipe_name(__entry->pipe), __entry->frame,
+ __entry->scanline, __entry->min, __entry->max)
+);
+
+TRACE_EVENT(i915_pipe_update_end,
+ TP_PROTO(struct drm_crtc *crtc),
+ TP_ARGS(crtc),
+
+ TP_STRUCT__entry(
+ __field(enum pipe, pipe)
+ __field(u32, frame)
+ __field(u32, scanline)
+ ),
+
+ TP_fast_assign(
+ __entry->pipe = to_intel_crtc(crtc)->pipe;
+ __entry->frame = crtc->dev->driver->get_vblank_counter(crtc->dev,
+ to_intel_crtc(crtc)->pipe);
+ __entry->scanline = i915_get_crtc_scanline(crtc);
+ ),
+
+ TP_printk("pipe %c, frame=%u, scanline=%u",
+ pipe_name(__entry->pipe), __entry->frame,
+ __entry->scanline)
+);
+
/* object tracking */
TRACE_EVENT(i915_gem_object_create,
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index f871b8f..874ffc1 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -63,6 +63,8 @@ static void intel_pipe_update_start(struct drm_crtc *crtc)
local_irq_disable();
+ trace_i915_pipe_update_start(crtc, min, max);
+
intel_crtc->vbl_received = false;
scanline = i915_get_crtc_scanline(crtc);
@@ -78,10 +80,14 @@ static void intel_pipe_update_start(struct drm_crtc *crtc)
}
drm_vblank_put(dev, pipe);
+
+ trace_i915_pipe_update_vblank_evaded(crtc, min, max);
}
static void intel_pipe_update_end(struct drm_crtc *crtc)
{
+ trace_i915_pipe_update_end(crtc);
+
local_irq_enable();
}
--
1.8.1.5
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