| Message ID | 20220615142051.450396-1-chenghaoyang@google.com |
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Hi Harvey, Quoting Harvey Yang via libcamera-devel (2022-06-15 15:20:50) > Hello everyone, > > This is the first draft of the patch(es) that uses tracing with perfetto > instead of lttng when libcamera is used in ChromeOS, which already uses > perfetto to collect traces in most of the applications/services. > > Please take a look and see if it's the right direction to go. Mostly I > copied and pasted the simple producer in chromiumos (also written by > me :) ): > https://chromium.googlesource.com/chromiumos/platform2/+/HEAD/perfetto_simple_producer > This looks interesting, and the perfetto UI viewer tool [0] looks good too. [0] https://ui.perfetto.dev/ Could you summarise some instructions on how to test this please? A good visualisation for libcamera internals would be great. I would love to see this able to switch between showing what each thread / component is busy processing, or have the timeline present the progress of Requests through the system. -- Kieran > Thanks! > > BR, > Harvey > > Harvey Yang (1): > Use tracing with perfetto in ChromeOS > > include/libcamera/internal/tracepoints.h.in | 37 +++++++++-- > .../internal/tracepoints/meson.build | 25 ++++--- > .../internal/tracepoints/pipeline.perfetto | 10 +++ > .../internal/tracepoints/request.perfetto | 30 +++++++++ > meson.build | 1 + > src/android/cros/camera3_hal.cpp | 5 ++ > src/android/cros/meson.build | 1 + > src/libcamera/meson.build | 18 ++++- > src/libcamera/pipeline_perfetto.cpp | 22 +++++++ > src/libcamera/request_perfetto.cpp | 65 +++++++++++++++++++ > src/libcamera/tracepoints.cpp | 11 ++++ > 11 files changed, 209 insertions(+), 16 deletions(-) > create mode 100644 include/libcamera/internal/tracepoints/pipeline.perfetto > create mode 100644 include/libcamera/internal/tracepoints/request.perfetto > create mode 100644 src/libcamera/pipeline_perfetto.cpp > create mode 100644 src/libcamera/request_perfetto.cpp > > -- > 2.36.1.476.g0c4daa206d-goog >
Hi Kieran, Thanks for looking into this! I'll add more description/instructions in the README, including adding new tracing points and how to check the tracing result. In the meantime, you can try https://ui.perfetto.dev with the attached tracing result I recorded. In the "Show timeline" tab, you can see that there are quite some traces with Category "libcamera "in CameraModuleThr 9 & CameraDeviceOps 11. Those might be helpful when we need to debug something :) BR, Harvey On Mon, Jul 18, 2022 at 7:49 PM Kieran Bingham < kieran.bingham@ideasonboard.com> wrote: > Hi Harvey, > > Quoting Harvey Yang via libcamera-devel (2022-06-15 15:20:50) > > Hello everyone, > > > > This is the first draft of the patch(es) that uses tracing with perfetto > > instead of lttng when libcamera is used in ChromeOS, which already uses > > perfetto to collect traces in most of the applications/services. > > > > Please take a look and see if it's the right direction to go. Mostly I > > copied and pasted the simple producer in chromiumos (also written by > > me :) ): > > > https://chromium.googlesource.com/chromiumos/platform2/+/HEAD/perfetto_simple_producer > > > > This looks interesting, and the perfetto UI viewer tool [0] looks good too. > > [0] https://ui.perfetto.dev/ > > Could you summarise some instructions on how to test this please? > A good visualisation for libcamera internals would be great. I would > love to see this able to switch between showing what each thread / > component is busy processing, or have the timeline present the progress > of Requests through the system. > > -- > Kieran > > > > Thanks! > > > > BR, > > Harvey > > > > Harvey Yang (1): > > Use tracing with perfetto in ChromeOS > > > > include/libcamera/internal/tracepoints.h.in | 37 +++++++++-- > > .../internal/tracepoints/meson.build | 25 ++++--- > > .../internal/tracepoints/pipeline.perfetto | 10 +++ > > .../internal/tracepoints/request.perfetto | 30 +++++++++ > > meson.build | 1 + > > src/android/cros/camera3_hal.cpp | 5 ++ > > src/android/cros/meson.build | 1 + > > src/libcamera/meson.build | 18 ++++- > > src/libcamera/pipeline_perfetto.cpp | 22 +++++++ > > src/libcamera/request_perfetto.cpp | 65 +++++++++++++++++++ > > src/libcamera/tracepoints.cpp | 11 ++++ > > 11 files changed, 209 insertions(+), 16 deletions(-) > > create mode 100644 > include/libcamera/internal/tracepoints/pipeline.perfetto > > create mode 100644 > include/libcamera/internal/tracepoints/request.perfetto > > create mode 100644 src/libcamera/pipeline_perfetto.cpp > > create mode 100644 src/libcamera/request_perfetto.cpp > > > > -- > > 2.36.1.476.g0c4daa206d-goog > > >
Hi Harvey, On Tue, Jul 19, 2022 at 05:20:56PM +0800, Cheng-Hao Yang via libcamera-devel wrote: > Hi Kieran, > > Thanks for looking into this! I'll add more description/instructions in the > README, including adding new tracing points and how to check the tracing > result. Thank you. > In the meantime, you can try https://ui.perfetto.dev with the attached > tracing result I recorded. In the "Show timeline" tab, you can see that > there are quite some traces with Category "libcamera "in CameraModuleThr 9 > & CameraDeviceOps 11. Those might be helpful when we need to debug > something :) Do you know if there's an easy way to try perfetto on a non-Chrome OS (and non-Android) device ? > On Mon, Jul 18, 2022 at 7:49 PM Kieran Bingham wrote: > > Quoting Harvey Yang via libcamera-devel (2022-06-15 15:20:50) > > > Hello everyone, > > > > > > This is the first draft of the patch(es) that uses tracing with perfetto > > > instead of lttng when libcamera is used in ChromeOS, which already uses > > > perfetto to collect traces in most of the applications/services. > > > > > > Please take a look and see if it's the right direction to go. Mostly I > > > copied and pasted the simple producer in chromiumos (also written by > > > me :) ): > > > > > https://chromium.googlesource.com/chromiumos/platform2/+/HEAD/perfetto_simple_producer > > > > > > > This looks interesting, and the perfetto UI viewer tool [0] looks good too. > > > > [0] https://ui.perfetto.dev/ > > > > Could you summarise some instructions on how to test this please? > > A good visualisation for libcamera internals would be great. I would > > love to see this able to switch between showing what each thread / > > component is busy processing, or have the timeline present the progress > > of Requests through the system. > > > > > Harvey Yang (1): > > > Use tracing with perfetto in ChromeOS > > > > > > include/libcamera/internal/tracepoints.h.in | 37 +++++++++-- > > > .../internal/tracepoints/meson.build | 25 ++++--- > > > .../internal/tracepoints/pipeline.perfetto | 10 +++ > > > .../internal/tracepoints/request.perfetto | 30 +++++++++ > > > meson.build | 1 + > > > src/android/cros/camera3_hal.cpp | 5 ++ > > > src/android/cros/meson.build | 1 + > > > src/libcamera/meson.build | 18 ++++- > > > src/libcamera/pipeline_perfetto.cpp | 22 +++++++ > > > src/libcamera/request_perfetto.cpp | 65 +++++++++++++++++++ > > > src/libcamera/tracepoints.cpp | 11 ++++ > > > 11 files changed, 209 insertions(+), 16 deletions(-) > > > create mode 100644 include/libcamera/internal/tracepoints/pipeline.perfetto > > > create mode 100644 include/libcamera/internal/tracepoints/request.perfetto > > > create mode 100644 src/libcamera/pipeline_perfetto.cpp > > > create mode 100644 src/libcamera/request_perfetto.cpp
Hi Laurent, > Do you know if there's an easy way to try perfetto on a non-Chrome OS (and non-Android) device ? I haven't tried it myself, but on the Perfetto Docs, there are instructions to capture a trace on Linux [1]. I'm not sure what kind of traces you'd get though :) Do you mean that we might consider using perfetto in libcamera, not only on ChromeOS devices? With a trace result (like I attached in the last message) though, we can see the visualized result on any devices with a browser, FYI. [1]: https://perfetto.dev/docs/quickstart/linux-tracing On Wed, Jul 20, 2022 at 4:49 PM Laurent Pinchart < laurent.pinchart@ideasonboard.com> wrote: > Hi Harvey, > > On Tue, Jul 19, 2022 at 05:20:56PM +0800, Cheng-Hao Yang via > libcamera-devel wrote: > > Hi Kieran, > > > > Thanks for looking into this! I'll add more description/instructions in > the > > README, including adding new tracing points and how to check the tracing > > result. > > Thank you. > > > In the meantime, you can try https://ui.perfetto.dev with the attached > > tracing result I recorded. In the "Show timeline" tab, you can see that > > there are quite some traces with Category "libcamera "in CameraModuleThr > 9 > > & CameraDeviceOps 11. Those might be helpful when we need to debug > > something :) > > Do you know if there's an easy way to try perfetto on a non-Chrome OS > (and non-Android) device ? > > > On Mon, Jul 18, 2022 at 7:49 PM Kieran Bingham wrote: > > > Quoting Harvey Yang via libcamera-devel (2022-06-15 15:20:50) > > > > Hello everyone, > > > > > > > > This is the first draft of the patch(es) that uses tracing with > perfetto > > > > instead of lttng when libcamera is used in ChromeOS, which already > uses > > > > perfetto to collect traces in most of the applications/services. > > > > > > > > Please take a look and see if it's the right direction to go. Mostly > I > > > > copied and pasted the simple producer in chromiumos (also written by > > > > me :) ): > > > > > > > > https://chromium.googlesource.com/chromiumos/platform2/+/HEAD/perfetto_simple_producer > > > > > > > > > > This looks interesting, and the perfetto UI viewer tool [0] looks good > too. > > > > > > [0] https://ui.perfetto.dev/ > > > > > > Could you summarise some instructions on how to test this please? > > > A good visualisation for libcamera internals would be great. I would > > > love to see this able to switch between showing what each thread / > > > component is busy processing, or have the timeline present the progress > > > of Requests through the system. > > > > > > > Harvey Yang (1): > > > > Use tracing with perfetto in ChromeOS > > > > > > > > include/libcamera/internal/tracepoints.h.in | 37 +++++++++-- > > > > .../internal/tracepoints/meson.build | 25 ++++--- > > > > .../internal/tracepoints/pipeline.perfetto | 10 +++ > > > > .../internal/tracepoints/request.perfetto | 30 +++++++++ > > > > meson.build | 1 + > > > > src/android/cros/camera3_hal.cpp | 5 ++ > > > > src/android/cros/meson.build | 1 + > > > > src/libcamera/meson.build | 18 ++++- > > > > src/libcamera/pipeline_perfetto.cpp | 22 +++++++ > > > > src/libcamera/request_perfetto.cpp | 65 > +++++++++++++++++++ > > > > src/libcamera/tracepoints.cpp | 11 ++++ > > > > 11 files changed, 209 insertions(+), 16 deletions(-) > > > > create mode 100644 > include/libcamera/internal/tracepoints/pipeline.perfetto > > > > create mode 100644 > include/libcamera/internal/tracepoints/request.perfetto > > > > create mode 100644 src/libcamera/pipeline_perfetto.cpp > > > > create mode 100644 src/libcamera/request_perfetto.cpp > > -- > Regards, > > Laurent Pinchart >
On Wed, Jul 20, 2022 at 04:57:22PM +0800, Cheng-Hao Yang wrote: > Hi Laurent, > > > Do you know if there's an easy way to try perfetto on a non-Chrome OS > (and non-Android) device ? > I haven't tried it myself, but on the Perfetto Docs, there are instructions > to capture a trace on Linux [1]. I'm not sure what kind of traces you'd get > though :) > > Do you mean that we might consider using perfetto in libcamera, not only on > ChromeOS devices? It would be nice if we could avoid maintaining different tracing frameworks. My main issue with perfetto is that it's not packaged by distributions, making it hard to use outside of Chrome OS and Android. > With a trace result (like I attached in the last message) though, we can > see the visualized result on any devices with a browser, FYI. > > [1]: https://perfetto.dev/docs/quickstart/linux-tracing > > On Wed, Jul 20, 2022 at 4:49 PM Laurent Pinchart wrote: > > On Tue, Jul 19, 2022 at 05:20:56PM +0800, Cheng-Hao Yang via libcamera-devel wrote: > > > Hi Kieran, > > > > > > Thanks for looking into this! I'll add more description/instructions in the > > > README, including adding new tracing points and how to check the tracing > > > result. > > > > Thank you. > > > > > In the meantime, you can try https://ui.perfetto.dev with the attached > > > tracing result I recorded. In the "Show timeline" tab, you can see that > > > there are quite some traces with Category "libcamera "in CameraModuleThr 9 > > > & CameraDeviceOps 11. Those might be helpful when we need to debug > > > something :) > > > > Do you know if there's an easy way to try perfetto on a non-Chrome OS > > (and non-Android) device ? > > > > > On Mon, Jul 18, 2022 at 7:49 PM Kieran Bingham wrote: > > > > Quoting Harvey Yang via libcamera-devel (2022-06-15 15:20:50) > > > > > Hello everyone, > > > > > > > > > > This is the first draft of the patch(es) that uses tracing with perfetto > > > > > instead of lttng when libcamera is used in ChromeOS, which already uses > > > > > perfetto to collect traces in most of the applications/services. > > > > > > > > > > Please take a look and see if it's the right direction to go. Mostly I > > > > > copied and pasted the simple producer in chromiumos (also written by > > > > > me :) ): > > > > > > > > > > https://chromium.googlesource.com/chromiumos/platform2/+/HEAD/perfetto_simple_producer > > > > > > > > > > > > > This looks interesting, and the perfetto UI viewer tool [0] looks good too. > > > > > > > > [0] https://ui.perfetto.dev/ > > > > > > > > Could you summarise some instructions on how to test this please? > > > > A good visualisation for libcamera internals would be great. I would > > > > love to see this able to switch between showing what each thread / > > > > component is busy processing, or have the timeline present the progress > > > > of Requests through the system. > > > > > > > > > Harvey Yang (1): > > > > > Use tracing with perfetto in ChromeOS > > > > > > > > > > include/libcamera/internal/tracepoints.h.in | 37 +++++++++-- > > > > > .../internal/tracepoints/meson.build | 25 ++++--- > > > > > .../internal/tracepoints/pipeline.perfetto | 10 +++ > > > > > .../internal/tracepoints/request.perfetto | 30 +++++++++ > > > > > meson.build | 1 + > > > > > src/android/cros/camera3_hal.cpp | 5 ++ > > > > > src/android/cros/meson.build | 1 + > > > > > src/libcamera/meson.build | 18 ++++- > > > > > src/libcamera/pipeline_perfetto.cpp | 22 +++++++ > > > > > src/libcamera/request_perfetto.cpp | 65 +++++++++++++++++++ > > > > > src/libcamera/tracepoints.cpp | 11 ++++ > > > > > 11 files changed, 209 insertions(+), 16 deletions(-) > > > > > create mode 100644 include/libcamera/internal/tracepoints/pipeline.perfetto > > > > > create mode 100644 include/libcamera/internal/tracepoints/request.perfetto > > > > > create mode 100644 src/libcamera/pipeline_perfetto.cpp > > > > > create mode 100644 src/libcamera/request_perfetto.cpp
Uploaded PATCH v2. Descriptions and instructions are added in the document: tracing.rst. Please check :) I don't know how to split up the patch elegantly though... > It would be nice if we could avoid maintaining different tracing frameworks. My main issue with perfetto is that it's not packaged by distributions, making it hard to use outside of Chrome OS and Android. Yeah, that's an issue... The source of truth is in aosp, and it was meant to support Android/Chromium in the first place IIUC... BR, Harvey On Wed, Jul 20, 2022 at 6:38 PM Laurent Pinchart < laurent.pinchart@ideasonboard.com> wrote: > On Wed, Jul 20, 2022 at 04:57:22PM +0800, Cheng-Hao Yang wrote: > > Hi Laurent, > > > > > Do you know if there's an easy way to try perfetto on a non-Chrome OS > > (and non-Android) device ? > > I haven't tried it myself, but on the Perfetto Docs, there are > instructions > > to capture a trace on Linux [1]. I'm not sure what kind of traces you'd > get > > though :) > > > > Do you mean that we might consider using perfetto in libcamera, not only > on > > ChromeOS devices? > > It would be nice if we could avoid maintaining different tracing > frameworks. My main issue with perfetto is that it's not packaged by > distributions, making it hard to use outside of Chrome OS and Android. > > > With a trace result (like I attached in the last message) though, we can > > see the visualized result on any devices with a browser, FYI. > > > > [1]: https://perfetto.dev/docs/quickstart/linux-tracing > > > > On Wed, Jul 20, 2022 at 4:49 PM Laurent Pinchart wrote: > > > On Tue, Jul 19, 2022 at 05:20:56PM +0800, Cheng-Hao Yang via > libcamera-devel wrote: > > > > Hi Kieran, > > > > > > > > Thanks for looking into this! I'll add more description/instructions > in the > > > > README, including adding new tracing points and how to check the > tracing > > > > result. > > > > > > Thank you. > > > > > > > In the meantime, you can try https://ui.perfetto.dev with the > attached > > > > tracing result I recorded. In the "Show timeline" tab, you can see > that > > > > there are quite some traces with Category "libcamera "in > CameraModuleThr 9 > > > > & CameraDeviceOps 11. Those might be helpful when we need to debug > > > > something :) > > > > > > Do you know if there's an easy way to try perfetto on a non-Chrome OS > > > (and non-Android) device ? > > > > > > > On Mon, Jul 18, 2022 at 7:49 PM Kieran Bingham wrote: > > > > > Quoting Harvey Yang via libcamera-devel (2022-06-15 15:20:50) > > > > > > Hello everyone, > > > > > > > > > > > > This is the first draft of the patch(es) that uses tracing with > perfetto > > > > > > instead of lttng when libcamera is used in ChromeOS, which > already uses > > > > > > perfetto to collect traces in most of the applications/services. > > > > > > > > > > > > Please take a look and see if it's the right direction to go. > Mostly I > > > > > > copied and pasted the simple producer in chromiumos (also > written by > > > > > > me :) ): > > > > > > > > > > > > > https://chromium.googlesource.com/chromiumos/platform2/+/HEAD/perfetto_simple_producer > > > > > > > > > > > > > > > > This looks interesting, and the perfetto UI viewer tool [0] looks > good too. > > > > > > > > > > [0] https://ui.perfetto.dev/ > > > > > > > > > > Could you summarise some instructions on how to test this please? > > > > > A good visualisation for libcamera internals would be great. I > would > > > > > love to see this able to switch between showing what each thread / > > > > > component is busy processing, or have the timeline present the > progress > > > > > of Requests through the system. > > > > > > > > > > > Harvey Yang (1): > > > > > > Use tracing with perfetto in ChromeOS > > > > > > > > > > > > include/libcamera/internal/tracepoints.h.in | 37 +++++++++-- > > > > > > .../internal/tracepoints/meson.build | 25 ++++--- > > > > > > .../internal/tracepoints/pipeline.perfetto | 10 +++ > > > > > > .../internal/tracepoints/request.perfetto | 30 +++++++++ > > > > > > meson.build | 1 + > > > > > > src/android/cros/camera3_hal.cpp | 5 ++ > > > > > > src/android/cros/meson.build | 1 + > > > > > > src/libcamera/meson.build | 18 ++++- > > > > > > src/libcamera/pipeline_perfetto.cpp | 22 +++++++ > > > > > > src/libcamera/request_perfetto.cpp | 65 > +++++++++++++++++++ > > > > > > src/libcamera/tracepoints.cpp | 11 ++++ > > > > > > 11 files changed, 209 insertions(+), 16 deletions(-) > > > > > > create mode 100644 > include/libcamera/internal/tracepoints/pipeline.perfetto > > > > > > create mode 100644 > include/libcamera/internal/tracepoints/request.perfetto > > > > > > create mode 100644 src/libcamera/pipeline_perfetto.cpp > > > > > > create mode 100644 src/libcamera/request_perfetto.cpp > > -- > Regards, > > Laurent Pinchart >
Hi folks, I'd like to request for another round of review of this patch. It'd really help a lot for performance tracing in CrOS. If we could adopt it outside of ChromeOS and Android, it'd be better :) On Fri, Jul 22, 2022 at 9:04 PM Cheng-Hao Yang <chenghaoyang@chromium.org> wrote: > Uploaded PATCH v2. Descriptions and instructions are added in the > document: tracing.rst. Please check :) > I don't know how to split up the patch elegantly though... > > > It would be nice if we could avoid maintaining different tracing > frameworks. My main issue with perfetto is that it's not packaged by > distributions, making it hard to use outside of Chrome OS and Android. > Yeah, that's an issue... The source of truth is in aosp, and it was meant > to support Android/Chromium in the first place IIUC... > > Actually perfetto provides the sdk to be included for traces providers, like [1]. Would that help? A server (traced) is still needed in the system to connect traces providers and collectors though... [1]: https://android.googlesource.com/platform/external/perfetto/+/refs/heads/releases/v30.x/sdk/ > BR, > Harvey > > On Wed, Jul 20, 2022 at 6:38 PM Laurent Pinchart < > laurent.pinchart@ideasonboard.com> wrote: > >> On Wed, Jul 20, 2022 at 04:57:22PM +0800, Cheng-Hao Yang wrote: >> > Hi Laurent, >> > >> > > Do you know if there's an easy way to try perfetto on a non-Chrome OS >> > (and non-Android) device ? >> > I haven't tried it myself, but on the Perfetto Docs, there are >> instructions >> > to capture a trace on Linux [1]. I'm not sure what kind of traces you'd >> get >> > though :) >> > >> > Do you mean that we might consider using perfetto in libcamera, not >> only on >> > ChromeOS devices? >> >> It would be nice if we could avoid maintaining different tracing >> frameworks. My main issue with perfetto is that it's not packaged by >> distributions, making it hard to use outside of Chrome OS and Android. >> >> > With a trace result (like I attached in the last message) though, we can >> > see the visualized result on any devices with a browser, FYI. >> > >> > [1]: https://perfetto.dev/docs/quickstart/linux-tracing >> > >> > On Wed, Jul 20, 2022 at 4:49 PM Laurent Pinchart wrote: >> > > On Tue, Jul 19, 2022 at 05:20:56PM +0800, Cheng-Hao Yang via >> libcamera-devel wrote: >> > > > Hi Kieran, >> > > > >> > > > Thanks for looking into this! I'll add more >> description/instructions in the >> > > > README, including adding new tracing points and how to check the >> tracing >> > > > result. >> > > >> > > Thank you. >> > > >> > > > In the meantime, you can try https://ui.perfetto.dev with the >> attached >> > > > tracing result I recorded. In the "Show timeline" tab, you can see >> that >> > > > there are quite some traces with Category "libcamera "in >> CameraModuleThr 9 >> > > > & CameraDeviceOps 11. Those might be helpful when we need to debug >> > > > something :) >> > > >> > > Do you know if there's an easy way to try perfetto on a non-Chrome OS >> > > (and non-Android) device ? >> > > >> > > > On Mon, Jul 18, 2022 at 7:49 PM Kieran Bingham wrote: >> > > > > Quoting Harvey Yang via libcamera-devel (2022-06-15 15:20:50) >> > > > > > Hello everyone, >> > > > > > >> > > > > > This is the first draft of the patch(es) that uses tracing with >> perfetto >> > > > > > instead of lttng when libcamera is used in ChromeOS, which >> already uses >> > > > > > perfetto to collect traces in most of the applications/services. >> > > > > > >> > > > > > Please take a look and see if it's the right direction to go. >> Mostly I >> > > > > > copied and pasted the simple producer in chromiumos (also >> written by >> > > > > > me :) ): >> > > > > > >> > > > > > >> https://chromium.googlesource.com/chromiumos/platform2/+/HEAD/perfetto_simple_producer >> > > > > > >> > > > > >> > > > > This looks interesting, and the perfetto UI viewer tool [0] looks >> good too. >> > > > > >> > > > > [0] https://ui.perfetto.dev/ >> > > > > >> > > > > Could you summarise some instructions on how to test this please? >> > > > > A good visualisation for libcamera internals would be great. I >> would >> > > > > love to see this able to switch between showing what each thread / >> > > > > component is busy processing, or have the timeline present the >> progress >> > > > > of Requests through the system. >> > > > > >> > > > > > Harvey Yang (1): >> > > > > > Use tracing with perfetto in ChromeOS >> > > > > > >> > > > > > include/libcamera/internal/tracepoints.h.in | 37 +++++++++-- >> > > > > > .../internal/tracepoints/meson.build | 25 ++++--- >> > > > > > .../internal/tracepoints/pipeline.perfetto | 10 +++ >> > > > > > .../internal/tracepoints/request.perfetto | 30 +++++++++ >> > > > > > meson.build | 1 + >> > > > > > src/android/cros/camera3_hal.cpp | 5 ++ >> > > > > > src/android/cros/meson.build | 1 + >> > > > > > src/libcamera/meson.build | 18 ++++- >> > > > > > src/libcamera/pipeline_perfetto.cpp | 22 +++++++ >> > > > > > src/libcamera/request_perfetto.cpp | 65 >> +++++++++++++++++++ >> > > > > > src/libcamera/tracepoints.cpp | 11 ++++ >> > > > > > 11 files changed, 209 insertions(+), 16 deletions(-) >> > > > > > create mode 100644 >> include/libcamera/internal/tracepoints/pipeline.perfetto >> > > > > > create mode 100644 >> include/libcamera/internal/tracepoints/request.perfetto >> > > > > > create mode 100644 src/libcamera/pipeline_perfetto.cpp >> > > > > > create mode 100644 src/libcamera/request_perfetto.cpp >> >> -- >> Regards, >> >> Laurent Pinchart >> >