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mesa/src/intel/ds/intel_driver_ds.cc

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/*
* Copyright © 2021 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdio.h>
#include <stdarg.h>
#include "common/intel_gem.h"
#include "perf/intel_perf.h"
#include "util/hash_table.h"
#include "util/u_process.h"
#include "intel_driver_ds.h"
#include "intel_pps_priv.h"
#include "intel_tracepoints.h"
#ifdef HAVE_PERFETTO
#include "util/u_perfetto.h"
#include "intel_tracepoints_perfetto.h"
/* Just naming stages */
static const struct {
const char *name;
/* Tells us if a given stage is pipelined. This is used to build stacks of
* pipelined elements so that the perfetto UI doesn't get confused by elements
* ending out of order.
*/
bool pipelined;
/* The perfetto UI requires that there is a parent-child relationship
* within a row of elements. Which means that all children elements must
* end within the lifespan of their parent.
*
* Some elements like stalls and command buffers follow that relationship,
* but not all. This tells us in which UI row the elements should live.
*/
enum intel_ds_queue_stage draw_stage;
} intel_queue_stage_desc[INTEL_DS_QUEUE_STAGE_N_STAGES] = {
/* Order must match the enum! */
{
"cmd-buffer",
false,
INTEL_DS_QUEUE_STAGE_CMD_BUFFER,
},
{
"stall",
false,
INTEL_DS_QUEUE_STAGE_STALL,
},
{
"compute",
true,
INTEL_DS_QUEUE_STAGE_COMPUTE,
},
{
"render-pass",
true,
INTEL_DS_QUEUE_STAGE_RENDER_PASS,
},
{
"blorp",
true,
INTEL_DS_QUEUE_STAGE_BLORP,
},
{
"draw",
true,
INTEL_DS_QUEUE_STAGE_DRAW,
},
};
struct IntelRenderpassIncrementalState {
bool was_cleared = true;
};
struct IntelRenderpassTraits : public perfetto::DefaultDataSourceTraits {
using IncrementalStateType = IntelRenderpassIncrementalState;
};
class IntelRenderpassDataSource : public perfetto::DataSource<IntelRenderpassDataSource,
IntelRenderpassTraits> {
public:
void OnSetup(const SetupArgs &) override
{
// Use this callback to apply any custom configuration to your data source
// based on the TraceConfig in SetupArgs.
}
void OnStart(const StartArgs &) override
{
// This notification can be used to initialize the GPU driver, enable
// counters, etc. StartArgs will contains the DataSourceDescriptor,
// which can be extended.
u_trace_perfetto_start();
PERFETTO_LOG("Tracing started");
}
void OnStop(const StopArgs &) override
{
PERFETTO_LOG("Tracing stopped");
// Undo any initialization done in OnStart.
u_trace_perfetto_stop();
// TODO we should perhaps block until queued traces are flushed?
Trace([](IntelRenderpassDataSource::TraceContext ctx) {
auto packet = ctx.NewTracePacket();
packet->Finalize();
ctx.Flush();
});
}
};
PERFETTO_DECLARE_DATA_SOURCE_STATIC_MEMBERS(IntelRenderpassDataSource);
PERFETTO_DEFINE_DATA_SOURCE_STATIC_MEMBERS(IntelRenderpassDataSource);
using perfetto::protos::pbzero::InternedGpuRenderStageSpecification_RenderStageCategory;
enum InternedGpuRenderStageSpecification_RenderStageCategory
i915_engine_class_to_category(enum drm_i915_gem_engine_class engine_class)
{
switch (engine_class) {
case I915_ENGINE_CLASS_RENDER:
return InternedGpuRenderStageSpecification_RenderStageCategory::
InternedGpuRenderStageSpecification_RenderStageCategory_GRAPHICS;
default:
return InternedGpuRenderStageSpecification_RenderStageCategory::InternedGpuRenderStageSpecification_RenderStageCategory_OTHER;
}
}
static void
sync_timestamp(IntelRenderpassDataSource::TraceContext &ctx,
struct intel_ds_device *device)
{
uint64_t cpu_ts = perfetto::base::GetBootTimeNs().count();
uint64_t gpu_ts = intel_device_info_timebase_scale(&device->info,
intel_read_gpu_timestamp(device->fd));
if (cpu_ts < device->next_clock_sync_ns)
return;
PERFETTO_LOG("sending clocks gpu=0x%08x", device->gpu_clock_id);
device->sync_gpu_ts = gpu_ts;
device->next_clock_sync_ns = cpu_ts + 1000000000ull;
auto packet = ctx.NewTracePacket();
packet->set_timestamp_clock_id(perfetto::protos::pbzero::BUILTIN_CLOCK_BOOTTIME);
packet->set_timestamp(cpu_ts);
auto event = packet->set_clock_snapshot();
{
auto clock = event->add_clocks();
clock->set_clock_id(perfetto::protos::pbzero::BUILTIN_CLOCK_BOOTTIME);
clock->set_timestamp(cpu_ts);
}
{
auto clock = event->add_clocks();
clock->set_clock_id(device->gpu_clock_id);
clock->set_timestamp(gpu_ts);
}
}
static void
send_descriptors(IntelRenderpassDataSource::TraceContext &ctx,
struct intel_ds_device *device)
{
struct intel_ds_queue *queue;
PERFETTO_LOG("Sending renderstage descriptors");
device->event_id = 0;
u_vector_foreach(queue, &device->queues) {
for (uint32_t s = 0; s < ARRAY_SIZE(queue->stages); s++) {
queue->stages[s].start_ns = 0;
}
}
{
auto packet = ctx.NewTracePacket();
packet->set_timestamp(perfetto::base::GetBootTimeNs().count());
packet->set_timestamp_clock_id(perfetto::protos::pbzero::BUILTIN_CLOCK_BOOTTIME);
packet->set_sequence_flags(perfetto::protos::pbzero::TracePacket::SEQ_INCREMENTAL_STATE_CLEARED);
auto interned_data = packet->set_interned_data();
{
auto desc = interned_data->add_graphics_contexts();
desc->set_iid(device->iid);
desc->set_pid(getpid());
switch (device->api) {
case INTEL_DS_API_OPENGL:
desc->set_api(perfetto::protos::pbzero::InternedGraphicsContext_Api_OPEN_GL);
break;
case INTEL_DS_API_VULKAN:
desc->set_api(perfetto::protos::pbzero::InternedGraphicsContext_Api_VULKAN);
break;
default:
break;
}
}
/* Emit all the IID picked at device/queue creation. */
u_vector_foreach(queue, &device->queues) {
for (unsigned s = 0; s < INTEL_DS_QUEUE_STAGE_N_STAGES; s++) {
{
/* We put the stage number in there so that all rows are order
* by intel_ds_queue_stage.
*/
char name[100];
snprintf(name, sizeof(name), "%.10s-%s-%u-%s",
util_get_process_name(),
queue->name, s, intel_queue_stage_desc[s].name);
auto desc = interned_data->add_gpu_specifications();
desc->set_iid(queue->stages[s].queue_iid);
desc->set_name(name);
}
{
auto desc = interned_data->add_gpu_specifications();
desc->set_iid(queue->stages[s].stage_iid);
desc->set_name(intel_queue_stage_desc[s].name);
}
}
}
}
device->next_clock_sync_ns = 0;
sync_timestamp(ctx, device);
}
typedef void (*trace_payload_as_extra_func)(perfetto::protos::pbzero::GpuRenderStageEvent *, const void*);
static void
begin_event(struct intel_ds_queue *queue, uint64_t ts_ns,
enum intel_ds_queue_stage stage_id)
{
/* If we haven't managed to calibrate the alignment between GPU and CPU
* timestamps yet, then skip this trace, otherwise perfetto won't know
* what to do with it.
*/
if (!queue->device->sync_gpu_ts) {
queue->stages[stage_id].start_ns = 0;
return;
}
queue->stages[stage_id].start_ns = ts_ns;
}
static void
end_event(struct intel_ds_queue *queue, uint64_t ts_ns,
enum intel_ds_queue_stage stage_id,
uint32_t submission_id, const void* payload = nullptr,
trace_payload_as_extra_func payload_as_extra = nullptr)
{
struct intel_ds_device *device = queue->device;
/* If we haven't managed to calibrate the alignment between GPU and CPU
* timestamps yet, then skip this trace, otherwise perfetto won't know
* what to do with it.
*/
if (!device->sync_gpu_ts)
return;
struct intel_ds_stage *stage = &queue->stages[stage_id];
uint64_t start_ns = stage->start_ns;
if (!start_ns)
return;
uint64_t evt_id = device->event_id++;
IntelRenderpassDataSource::Trace([=](IntelRenderpassDataSource::TraceContext tctx) {
if (auto state = tctx.GetIncrementalState(); state->was_cleared) {
send_descriptors(tctx, queue->device);
state->was_cleared = false;
}
sync_timestamp(tctx, queue->device);
auto packet = tctx.NewTracePacket();
packet->set_timestamp(start_ns);
packet->set_timestamp_clock_id(queue->device->gpu_clock_id);
assert(ts_ns >= start_ns);
auto event = packet->set_gpu_render_stage_event();
event->set_gpu_id(queue->device->gpu_id);
event->set_hw_queue_iid(stage->queue_iid);
event->set_stage_iid(stage->stage_iid);
event->set_context(queue->device->iid);
event->set_event_id(evt_id);
event->set_duration(ts_ns - start_ns);
event->set_submission_id(submission_id);
if (payload && payload_as_extra) {
payload_as_extra(event, payload);
}
});
stage->start_ns = 0;
}
static void
custom_trace_payload_as_extra_end_stall(perfetto::protos::pbzero::GpuRenderStageEvent *event,
const struct trace_intel_end_stall *payload)
{
char buf[256];
{
auto data = event->add_extra_data();
data->set_name("stall_reason");
snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s%s%s%s%s%s : %s",
(payload->flags & INTEL_DS_DEPTH_CACHE_FLUSH_BIT) ? "+depth_flush" : "",
(payload->flags & INTEL_DS_DATA_CACHE_FLUSH_BIT) ? "+dc_flush" : "",
(payload->flags & INTEL_DS_HDC_PIPELINE_FLUSH_BIT) ? "+hdc_flush" : "",
(payload->flags & INTEL_DS_RENDER_TARGET_CACHE_FLUSH_BIT) ? "+rt_flush" : "",
(payload->flags & INTEL_DS_TILE_CACHE_FLUSH_BIT) ? "+tile_flush" : "",
(payload->flags & INTEL_DS_STATE_CACHE_INVALIDATE_BIT) ? "+state_inv" : "",
(payload->flags & INTEL_DS_CONST_CACHE_INVALIDATE_BIT) ? "+const_inv" : "",
(payload->flags & INTEL_DS_VF_CACHE_INVALIDATE_BIT) ? "+vf_inv" : "",
(payload->flags & INTEL_DS_TEXTURE_CACHE_INVALIDATE_BIT) ? "+tex_inv" : "",
(payload->flags & INTEL_DS_INST_CACHE_INVALIDATE_BIT) ? "+inst_inv" : "",
(payload->flags & INTEL_DS_STALL_AT_SCOREBOARD_BIT) ? "+pb_stall" : "",
(payload->flags & INTEL_DS_DEPTH_STALL_BIT) ? "+depth_stall" : "",
(payload->flags & INTEL_DS_HDC_PIPELINE_FLUSH_BIT) ? "+hdc_flush" : "",
(payload->flags & INTEL_DS_CS_STALL_BIT) ? "+cs_stall" : "",
payload->reason ? payload->reason : "unknown");
assert(strlen(buf) > 0);
data->set_value(buf);
}
}
#endif /* HAVE_PERFETTO */
#ifdef __cplusplus
extern "C" {
#endif
#ifdef HAVE_PERFETTO
/*
* Trace callbacks, called from u_trace once the timestamps from GPU have been
* collected.
*/
#define CREATE_DUAL_EVENT_CALLBACK(event_name, stage) \
void \
intel_ds_begin_##event_name(struct intel_ds_device *device, \
uint64_t ts_ns, \
const void *flush_data, \
const struct trace_intel_begin_##event_name *payload) \
{ \
const struct intel_ds_flush_data *flush = \
(const struct intel_ds_flush_data *) flush_data; \
begin_event(flush->queue, ts_ns, stage); \
} \
\
void \
intel_ds_end_##event_name(struct intel_ds_device *device, \
uint64_t ts_ns, \
const void *flush_data, \
const struct trace_intel_end_##event_name *payload) \
{ \
const struct intel_ds_flush_data *flush = \
(const struct intel_ds_flush_data *) flush_data; \
end_event(flush->queue, ts_ns, stage, flush->submission_id, \
payload, \
(trace_payload_as_extra_func) \
&trace_payload_as_extra_intel_end_##event_name); \
} \
CREATE_DUAL_EVENT_CALLBACK(cmd_buffer, INTEL_DS_QUEUE_STAGE_CMD_BUFFER)
CREATE_DUAL_EVENT_CALLBACK(render_pass, INTEL_DS_QUEUE_STAGE_RENDER_PASS)
CREATE_DUAL_EVENT_CALLBACK(blorp, INTEL_DS_QUEUE_STAGE_BLORP)
CREATE_DUAL_EVENT_CALLBACK(draw, INTEL_DS_QUEUE_STAGE_DRAW)
CREATE_DUAL_EVENT_CALLBACK(draw_indexed, INTEL_DS_QUEUE_STAGE_DRAW)
CREATE_DUAL_EVENT_CALLBACK(draw_indexed_multi, INTEL_DS_QUEUE_STAGE_DRAW)
CREATE_DUAL_EVENT_CALLBACK(draw_indexed_indirect, INTEL_DS_QUEUE_STAGE_DRAW)
CREATE_DUAL_EVENT_CALLBACK(draw_multi, INTEL_DS_QUEUE_STAGE_DRAW)
CREATE_DUAL_EVENT_CALLBACK(draw_indirect, INTEL_DS_QUEUE_STAGE_DRAW)
CREATE_DUAL_EVENT_CALLBACK(draw_indirect_count, INTEL_DS_QUEUE_STAGE_DRAW)
CREATE_DUAL_EVENT_CALLBACK(draw_indirect_byte_count, INTEL_DS_QUEUE_STAGE_DRAW)
CREATE_DUAL_EVENT_CALLBACK(draw_indexed_indirect_count, INTEL_DS_QUEUE_STAGE_DRAW)
CREATE_DUAL_EVENT_CALLBACK(compute, INTEL_DS_QUEUE_STAGE_COMPUTE)
void
intel_ds_begin_stall(struct intel_ds_device *device,
uint64_t ts_ns,
const void *flush_data,
const struct trace_intel_begin_stall *payload)
{
const struct intel_ds_flush_data *flush =
(const struct intel_ds_flush_data *) flush_data;
begin_event(flush->queue, ts_ns, INTEL_DS_QUEUE_STAGE_STALL);
}
void
intel_ds_end_stall(struct intel_ds_device *device,
uint64_t ts_ns,
const void *flush_data,
const struct trace_intel_end_stall *payload)
{
const struct intel_ds_flush_data *flush =
(const struct intel_ds_flush_data *) flush_data;
end_event(flush->queue, ts_ns, INTEL_DS_QUEUE_STAGE_STALL, flush->submission_id,
payload,
(trace_payload_as_extra_func)custom_trace_payload_as_extra_end_stall);
}
uint64_t
intel_ds_begin_submit(struct intel_ds_queue *queue)
{
return perfetto::base::GetBootTimeNs().count();
}
void
intel_ds_end_submit(struct intel_ds_queue *queue,
uint64_t start_ts)
{
if (!u_trace_context_actively_tracing(&queue->device->trace_context)) {
queue->device->sync_gpu_ts = 0;
queue->device->next_clock_sync_ns = 0;
return;
}
uint64_t end_ts = perfetto::base::GetBootTimeNs().count();
uint32_t submission_id = queue->submission_id++;
IntelRenderpassDataSource::Trace([=](IntelRenderpassDataSource::TraceContext tctx) {
if (auto state = tctx.GetIncrementalState(); state->was_cleared) {
send_descriptors(tctx, queue->device);
state->was_cleared = false;
}
sync_timestamp(tctx, queue->device);
auto packet = tctx.NewTracePacket();
packet->set_timestamp(start_ts);
auto event = packet->set_vulkan_api_event();
auto submit = event->set_vk_queue_submit();
// submit->set_pid(os_get_pid());
// submit->set_tid(os_get_tid());
submit->set_duration_ns(end_ts - start_ts);
submit->set_vk_queue((uintptr_t) queue);
submit->set_submission_id(submission_id);
});
}
#endif /* HAVE_PERFETTO */
static void
intel_driver_ds_init_once(void)
{
#ifdef HAVE_PERFETTO
util_perfetto_init();
perfetto::DataSourceDescriptor dsd;
dsd.set_name("gpu.renderstages.intel");
IntelRenderpassDataSource::Register(dsd);
#endif
}
static once_flag intel_driver_ds_once_flag = ONCE_FLAG_INIT;
static uint64_t get_iid()
{
static uint64_t iid = 1;
return iid++;
}
void
intel_driver_ds_init(void)
{
call_once(&intel_driver_ds_once_flag,
intel_driver_ds_init_once);
}
void
intel_ds_device_init(struct intel_ds_device *device,
struct intel_device_info *devinfo,
int drm_fd,
uint32_t gpu_id,
enum intel_ds_api api)
{
memset(device, 0, sizeof(*device));
assert(gpu_id < 128);
device->gpu_id = gpu_id;
device->gpu_clock_id = intel_pps_clock_id(gpu_id);
device->fd = drm_fd;
device->info = *devinfo;
device->iid = get_iid();
device->api = api;
u_vector_init(&device->queues, 4, sizeof(struct intel_ds_queue));
}
void
intel_ds_device_fini(struct intel_ds_device *device)
{
u_trace_context_fini(&device->trace_context);
u_vector_finish(&device->queues);
}
struct intel_ds_queue *
intel_ds_device_add_queue(struct intel_ds_device *device,
const char *fmt_name,
...)
{
struct intel_ds_queue *queue =
(struct intel_ds_queue *) u_vector_add(&device->queues);
va_list ap;
memset(queue, 0, sizeof(*queue));
queue->device = device;
queue->queue_id = u_vector_length(&device->queues) - 1;
va_start(ap, fmt_name);
vsnprintf(queue->name, sizeof(queue->name), fmt_name, ap);
va_end(ap);
for (unsigned s = 0; s < INTEL_DS_QUEUE_STAGE_N_STAGES; s++) {
queue->stages[s].queue_iid = get_iid();
queue->stages[s].stage_iid = get_iid();
}
return queue;
}
void intel_ds_flush_data_init(struct intel_ds_flush_data *data,
struct intel_ds_queue *queue,
uint64_t submission_id)
{
memset(data, 0, sizeof(*data));
data->queue = queue;
data->submission_id = submission_id;
u_trace_init(&data->trace, &queue->device->trace_context);
}
void intel_ds_flush_data_fini(struct intel_ds_flush_data *data)
{
u_trace_fini(&data->trace);
}
#ifdef __cplusplus
}
#endif
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