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drm/lima: add trace point for tasks

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track lima task start which can be combined with
dma_fence_signal to identify task execution time.

example command to record:

trace-cmd record -i \
  -e "lima:lima_task_submit" -e "lima:lima_task_run" \
  -e "*fence:*fence_signaled" -e "drm:drm_vblank_event" \
  -e "drm:drm_vblank_event_queued" sleep 4

Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200307135438.9981-1-yuq825@gmail.com
This commit is contained in:
Qiang Yu 2020-03-07 21:54:38 +08:00
parent 57b517cece
commit 7f60c4b9d9
5 changed files with 64 additions and 2 deletions
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3
drivers/gpu/drm/lima/Makefile
View file

@ -14,6 +14,7 @@ lima-y := \
lima_sched.o \
lima_ctx.o \
lima_dlbu.o \
lima_bcast.o
lima_bcast.o \
lima_trace.o
obj-$(CONFIG_DRM_LIMA) += lima.o

5
drivers/gpu/drm/lima/lima_sched.c
View file

@ -3,7 +3,6 @@
#include <linux/kthread.h>
#include <linux/slab.h>
#include <linux/xarray.h>
#include <linux/vmalloc.h>
#include "lima_drv.h"
@ -12,6 +11,7 @@
#include "lima_mmu.h"
#include "lima_l2_cache.h"
#include "lima_gem.h"
#include "lima_trace.h"
struct lima_fence {
struct dma_fence base;
@ -177,6 +177,7 @@ struct dma_fence *lima_sched_context_queue_task(struct lima_sched_context *conte
{
struct dma_fence *fence = dma_fence_get(&task->base.s_fence->finished);
trace_lima_task_submit(task);
drm_sched_entity_push_job(&task->base, &context->base);
return fence;
}
@ -251,6 +252,8 @@ static struct dma_fence *lima_sched_run_job(struct drm_sched_job *job)
if (last_vm)
lima_vm_put(last_vm);
trace_lima_task_run(task);
pipe->error = false;
pipe->task_run(pipe, task);

1
drivers/gpu/drm/lima/lima_sched.h
View file

@ -6,6 +6,7 @@
#include <drm/gpu_scheduler.h>
#include <linux/list.h>
#include <linux/xarray.h>
struct lima_vm;

7
drivers/gpu/drm/lima/lima_trace.c Normal file
View file

@ -0,0 +1,7 @@
// SPDX-License-Identifier: GPL-2.0 OR MIT
/* Copyright 2020 Qiang Yu <yuq825@gmail.com> */
#include "lima_sched.h"
#define CREATE_TRACE_POINTS
#include "lima_trace.h"

50
drivers/gpu/drm/lima/lima_trace.h Normal file
View file

@ -0,0 +1,50 @@
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/* Copyright 2020 Qiang Yu <yuq825@gmail.com> */
#if !defined(_LIMA_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _LIMA_TRACE_H_
#include <linux/tracepoint.h>
#undef TRACE_SYSTEM
#define TRACE_SYSTEM lima
#define TRACE_INCLUDE_FILE lima_trace
DECLARE_EVENT_CLASS(lima_task,
TP_PROTO(struct lima_sched_task *task),
TP_ARGS(task),
TP_STRUCT__entry(
__field(uint64_t, task_id)
__field(unsigned int, context)
__field(unsigned int, seqno)
__string(pipe, task->base.sched->name)
),
TP_fast_assign(
__entry->task_id = task->base.id;
__entry->context = task->base.s_fence->finished.context;
__entry->seqno = task->base.s_fence->finished.seqno;
__assign_str(pipe, task->base.sched->name)
),
TP_printk("task=%llu, context=%u seqno=%u pipe=%s",
__entry->task_id, __entry->context, __entry->seqno,
__get_str(pipe))
);
DEFINE_EVENT(lima_task, lima_task_submit,
TP_PROTO(struct lima_sched_task *task),
TP_ARGS(task)
);
DEFINE_EVENT(lima_task, lima_task_run,
TP_PROTO(struct lima_sched_task *task),
TP_ARGS(task)
);
#endif
/* This part must be outside protection */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH ../../drivers/gpu/drm/lima
#include <trace/define_trace.h>