linux-kernel - Re: [PATCH 0/5] perf record: Preparation for sideband injection

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Date:   Tue, 14 Jun 2022 07:55:28 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] perf record: Preparation for sideband injection

On Fri, Jun 10, 2022 at 4:33 AM Adrian Hunter <adrian.hunter@...el.com> wrote:
>
> Hi
>
> Here are some small patches in preparation for "sideband injection".
>
> I hope to run perf record in a virtual machine to capture sideband events
> while simulataneously running perf record with Intel PT on the host, and
> then subsequently inject the sideband events from the guest perf.data file
> into the host perf.data file, so that decoding can decode the Intel PT
> trace for the periods when the guest is running user space (kernel space
> is already decodable).
>
> The patches are changes I have found so far that will be needed.
>

Except for a nit on the perf-record man page, everything looks good to me.
Acked-by: Ian Rogers <irogers@...gle.com>

Thanks,
Ian

> Adrian Hunter (5):
>       perf record: Always get text_poke events with --kcore option
>       perf record: Always record id index
>       perf record: Add new option to sample identifier
>       perf record: Add finished init event
>       perf script: Add some missing event dumps
>
>  tools/lib/perf/include/perf/event.h      |  1 +
>  tools/perf/Documentation/perf-record.txt |  3 +++
>  tools/perf/builtin-inject.c              |  1 +
>  tools/perf/builtin-record.c              | 44 +++++++++++++++++++++++++++-----
>  tools/perf/builtin-script.c              |  6 +++++
>  tools/perf/util/event.c                  |  1 +
>  tools/perf/util/header.c                 |  3 +++
>  tools/perf/util/record.c                 |  2 +-
>  tools/perf/util/record.h                 |  1 +
>  tools/perf/util/session.c                |  4 +++
>  tools/perf/util/synthetic-events.c       |  7 +++--
>  tools/perf/util/tool.h                   |  3 ++-
>  12 files changed, 65 insertions(+), 11 deletions(-)
>
>
> Regards
> Adrian