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libcamera: request: Add tracepoints

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Add and use tracepoints in Request. Requests are core to libcamera
operation, thus detecting delays in their processing is important, and
serves as a good usage example of tracepoints.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Paul Elder 2020-10-28 19:10:27 +09:00
parent fcc6d4bd76
commit 27c9d6eceb
6 changed files with 130 additions and 0 deletions
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9
include/libcamera/internal/tracepoints/buffer_enums.tp Normal file
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@ -0,0 +1,9 @@
TRACEPOINT_ENUM(
libcamera,
buffer_status,
TP_ENUM_VALUES(
ctf_enum_value("FrameSuccess", 0)
ctf_enum_value("FrameError", 1)
ctf_enum_value("FrameCancelled", 2)
)
)

8
include/libcamera/internal/tracepoints/meson.build
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@ -1,4 +1,12 @@
# SPDX-License-Identifier: CC0-1.0
# enum files must go first
tracepoint_files = files([
'buffer_enums.tp',
'request_enums.tp',
])
tracepoint_files += files([
'pipeline.tp',
'request.tp',
])

25
include/libcamera/internal/tracepoints/pipeline.tp Normal file
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@ -0,0 +1,25 @@
TRACEPOINT_EVENT(
libcamera,
ipa_call_begin,
TP_ARGS(
const char *, pipe,
const char *, func
),
TP_FIELDS(
ctf_string(pipeline_name, pipe)
ctf_string(function_name, func)
)
)
TRACEPOINT_EVENT(
libcamera,
ipa_call_end,
TP_ARGS(
const char *, pipe,
const char *, func
),
TP_FIELDS(
ctf_string(pipeline_name, pipe)
ctf_string(function_name, func)
)
)

68
include/libcamera/internal/tracepoints/request.tp Normal file
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@ -0,0 +1,68 @@
#include <libcamera/buffer.h>
#include <libcamera/request.h>
TRACEPOINT_EVENT_CLASS(
libcamera,
request,
TP_ARGS(
libcamera::Request *, req
),
TP_FIELDS(
ctf_integer_hex(uintptr_t, request, reinterpret_cast<uintptr_t>(req))
ctf_integer(uint64_t, cookie, req->cookie())
ctf_enum(libcamera, request_status, uint32_t, status, req->status())
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_construct,
TP_ARGS(
libcamera::Request *, req
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_destroy,
TP_ARGS(
libcamera::Request *, req
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_reuse,
TP_ARGS(
libcamera::Request *, req
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_complete,
TP_ARGS(
libcamera::Request *, req
)
)
TRACEPOINT_EVENT(
libcamera,
request_complete_buffer,
TP_ARGS(
libcamera::Request *, req,
libcamera::FrameBuffer *, buf
),
TP_FIELDS(
ctf_integer_hex(uintptr_t, request, reinterpret_cast<uintptr_t>(req))
ctf_integer(uint64_t, cookie, req->cookie())
ctf_integer(int, status, req->status())
ctf_integer_hex(uintptr_t, buffer, reinterpret_cast<uintptr_t>(buf))
ctf_enum(libcamera, buffer_status, uint32_t, buf_status, buf->metadata().status)
)
)

9
include/libcamera/internal/tracepoints/request_enums.tp Normal file
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@ -0,0 +1,9 @@
TRACEPOINT_ENUM(
libcamera,
request_status,
TP_ENUM_VALUES(
ctf_enum_value("RequestPending", 0)
ctf_enum_value("RequestComplete", 1)
ctf_enum_value("RequestCancelled", 2)
)
)