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authorRob Clark <robdclark@chromium.org>2019-08-29 09:45:18 -0700
committerRob Clark <robdclark@chromium.org>2019-09-03 16:17:02 -0700
commitd934a712c5e6a3724dd560b8e92eb230b025ee8d (patch)
tree62488fe2e2ff6fe48b5875f7d1e067f70190e443
parentcd6d923167b1bf3e051f9d90fa129456d78ef06e (diff)
drm/msm: add atomic traces
This was useful for debugging fps drops. I suspect it will be useful again. Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Sean Paul <sean@poorly.run>
-rw-r--r--drivers/gpu/drm/msm/Makefile1
-rw-r--r--drivers/gpu/drm/msm/msm_atomic.c24
-rw-r--r--drivers/gpu/drm/msm/msm_atomic_trace.h110
-rw-r--r--drivers/gpu/drm/msm/msm_atomic_tracepoints.c3
-rw-r--r--drivers/gpu/drm/msm/msm_gpu_trace.h2
5 files changed, 136 insertions, 4 deletions
diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index 7a05cbf2f820..1579cf0d828f 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -75,6 +75,7 @@ msm-y := \
disp/dpu1/dpu_rm.o \
disp/dpu1/dpu_vbif.o \
msm_atomic.o \
+ msm_atomic_tracepoints.o \
msm_debugfs.o \
msm_drv.o \
msm_fb.o \
diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
index 9676e2906649..5ccfad794c6a 100644
--- a/drivers/gpu/drm/msm/msm_atomic.c
+++ b/drivers/gpu/drm/msm/msm_atomic.c
@@ -8,6 +8,7 @@
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_vblank.h>
+#include "msm_atomic_trace.h"
#include "msm_drv.h"
#include "msm_gem.h"
#include "msm_kms.h"
@@ -30,11 +31,13 @@ static void msm_atomic_async_commit(struct msm_kms *kms, int crtc_idx)
{
unsigned crtc_mask = BIT(crtc_idx);
+ trace_msm_atomic_async_commit_start(crtc_mask);
+
mutex_lock(&kms->commit_lock);
if (!(kms->pending_crtc_mask & crtc_mask)) {
mutex_unlock(&kms->commit_lock);
- return;
+ goto out;
}
kms->pending_crtc_mask &= ~crtc_mask;
@@ -44,19 +47,24 @@ static void msm_atomic_async_commit(struct msm_kms *kms, int crtc_idx)
/*
* Flush hardware updates:
*/
- DRM_DEBUG_ATOMIC("triggering async commit\n");
+ trace_msm_atomic_flush_commit(crtc_mask);
kms->funcs->flush_commit(kms, crtc_mask);
mutex_unlock(&kms->commit_lock);
/*
* Wait for flush to complete:
*/
+ trace_msm_atomic_wait_flush_start(crtc_mask);
kms->funcs->wait_flush(kms, crtc_mask);
+ trace_msm_atomic_wait_flush_finish(crtc_mask);
mutex_lock(&kms->commit_lock);
kms->funcs->complete_commit(kms, crtc_mask);
mutex_unlock(&kms->commit_lock);
kms->funcs->disable_commit(kms);
+
+out:
+ trace_msm_atomic_async_commit_finish(crtc_mask);
}
static enum hrtimer_restart msm_atomic_pending_timer(struct hrtimer *t)
@@ -141,13 +149,17 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state)
bool async = kms->funcs->vsync_time &&
can_do_async(state, &async_crtc);
+ trace_msm_atomic_commit_tail_start(async, crtc_mask);
+
kms->funcs->enable_commit(kms);
/*
* Ensure any previous (potentially async) commit has
* completed:
*/
+ trace_msm_atomic_wait_flush_start(crtc_mask);
kms->funcs->wait_flush(kms, crtc_mask);
+ trace_msm_atomic_wait_flush_finish(crtc_mask);
mutex_lock(&kms->commit_lock);
@@ -198,6 +210,8 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state)
drm_atomic_helper_commit_hw_done(state);
drm_atomic_helper_cleanup_planes(dev, state);
+ trace_msm_atomic_commit_tail_finish(async, crtc_mask);
+
return;
}
@@ -210,14 +224,16 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state)
/*
* Flush hardware updates:
*/
- DRM_DEBUG_ATOMIC("triggering commit\n");
+ trace_msm_atomic_flush_commit(crtc_mask);
kms->funcs->flush_commit(kms, crtc_mask);
mutex_unlock(&kms->commit_lock);
/*
* Wait for flush to complete:
*/
+ trace_msm_atomic_wait_flush_start(crtc_mask);
kms->funcs->wait_flush(kms, crtc_mask);
+ trace_msm_atomic_wait_flush_finish(crtc_mask);
mutex_lock(&kms->commit_lock);
kms->funcs->complete_commit(kms, crtc_mask);
@@ -226,4 +242,6 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state)
drm_atomic_helper_commit_hw_done(state);
drm_atomic_helper_cleanup_planes(dev, state);
+
+ trace_msm_atomic_commit_tail_finish(async, crtc_mask);
}
diff --git a/drivers/gpu/drm/msm/msm_atomic_trace.h b/drivers/gpu/drm/msm/msm_atomic_trace.h
new file mode 100644
index 000000000000..b4ca0ed3b4a3
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_atomic_trace.h
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#if !defined(_MSM_GPU_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
+#define _MSM_GPU_TRACE_H_
+
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM drm_msm_atomic
+#define TRACE_INCLUDE_FILE msm_atomic_trace
+
+TRACE_EVENT(msm_atomic_commit_tail_start,
+ TP_PROTO(bool async, unsigned crtc_mask),
+ TP_ARGS(async, crtc_mask),
+ TP_STRUCT__entry(
+ __field(bool, async)
+ __field(u32, crtc_mask)
+ ),
+ TP_fast_assign(
+ __entry->async = async;
+ __entry->crtc_mask = crtc_mask;
+ ),
+ TP_printk("async=%d crtc_mask=%x",
+ __entry->async, __entry->crtc_mask)
+);
+
+TRACE_EVENT(msm_atomic_commit_tail_finish,
+ TP_PROTO(bool async, unsigned crtc_mask),
+ TP_ARGS(async, crtc_mask),
+ TP_STRUCT__entry(
+ __field(bool, async)
+ __field(u32, crtc_mask)
+ ),
+ TP_fast_assign(
+ __entry->async = async;
+ __entry->crtc_mask = crtc_mask;
+ ),
+ TP_printk("async=%d crtc_mask=%x",
+ __entry->async, __entry->crtc_mask)
+);
+
+TRACE_EVENT(msm_atomic_async_commit_start,
+ TP_PROTO(unsigned crtc_mask),
+ TP_ARGS(crtc_mask),
+ TP_STRUCT__entry(
+ __field(u32, crtc_mask)
+ ),
+ TP_fast_assign(
+ __entry->crtc_mask = crtc_mask;
+ ),
+ TP_printk("crtc_mask=%x",
+ __entry->crtc_mask)
+);
+
+TRACE_EVENT(msm_atomic_async_commit_finish,
+ TP_PROTO(unsigned crtc_mask),
+ TP_ARGS(crtc_mask),
+ TP_STRUCT__entry(
+ __field(u32, crtc_mask)
+ ),
+ TP_fast_assign(
+ __entry->crtc_mask = crtc_mask;
+ ),
+ TP_printk("crtc_mask=%x",
+ __entry->crtc_mask)
+);
+
+TRACE_EVENT(msm_atomic_wait_flush_start,
+ TP_PROTO(unsigned crtc_mask),
+ TP_ARGS(crtc_mask),
+ TP_STRUCT__entry(
+ __field(u32, crtc_mask)
+ ),
+ TP_fast_assign(
+ __entry->crtc_mask = crtc_mask;
+ ),
+ TP_printk("crtc_mask=%x",
+ __entry->crtc_mask)
+);
+
+TRACE_EVENT(msm_atomic_wait_flush_finish,
+ TP_PROTO(unsigned crtc_mask),
+ TP_ARGS(crtc_mask),
+ TP_STRUCT__entry(
+ __field(u32, crtc_mask)
+ ),
+ TP_fast_assign(
+ __entry->crtc_mask = crtc_mask;
+ ),
+ TP_printk("crtc_mask=%x",
+ __entry->crtc_mask)
+);
+
+TRACE_EVENT(msm_atomic_flush_commit,
+ TP_PROTO(unsigned crtc_mask),
+ TP_ARGS(crtc_mask),
+ TP_STRUCT__entry(
+ __field(u32, crtc_mask)
+ ),
+ TP_fast_assign(
+ __entry->crtc_mask = crtc_mask;
+ ),
+ TP_printk("crtc_mask=%x",
+ __entry->crtc_mask)
+);
+
+#endif
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH ../../drivers/gpu/drm/msm
+#include <trace/define_trace.h>
diff --git a/drivers/gpu/drm/msm/msm_atomic_tracepoints.c b/drivers/gpu/drm/msm/msm_atomic_tracepoints.c
new file mode 100644
index 000000000000..011dc881f391
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_atomic_tracepoints.c
@@ -0,0 +1,3 @@
+// SPDX-License-Identifier: GPL-2.0
+#define CREATE_TRACE_POINTS
+#include "msm_atomic_trace.h"
diff --git a/drivers/gpu/drm/msm/msm_gpu_trace.h b/drivers/gpu/drm/msm/msm_gpu_trace.h
index 1155118a27a1..122b84789238 100644
--- a/drivers/gpu/drm/msm/msm_gpu_trace.h
+++ b/drivers/gpu/drm/msm/msm_gpu_trace.h
@@ -5,7 +5,7 @@
#include <linux/tracepoint.h>
#undef TRACE_SYSTEM
-#define TRACE_SYSTEM drm_msm
+#define TRACE_SYSTEM drm_msm_gpu
#define TRACE_INCLUDE_FILE msm_gpu_trace
TRACE_EVENT(msm_gpu_submit,