Re: [PATCH 0/4] perf tools: Support reading PERF_FORMAT_LOST (v3)

From: Arnaldo Carvalho de Melo
Date: Fri Aug 19 2022 - 11:26:39 EST


Em Fri, Aug 19, 2022 at 12:53:26PM +0200, Jiri Olsa escreveu:
> On Thu, Aug 18, 2022 at 05:36:40PM -0700, Namhyung Kim wrote:
> > Hello,
> >
> > The kernel v6.0 added PERF_FORMAT_LOST which can read a number of lost
> > samples for the given event. As it can change the output format of
> > read(2) and perf sample data, it needs to access them carefully.
> >
> > Changes in v3)
> > * add sample_read_group__for_each() (Jiri)
>
> Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>

Thanks, updated the patchset in my branch.

- Arnaldo

> thanks,
> jirka
>
> >
> > Changes in v2)
> > * add a comment in perf_evsel__read_group() (Jiri)
> > * simplify perf_evsel__adjust_values() (Jiri)
> >
> >
> > You can get the code from 'perf/read-lost-v3' brach on
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git
> >
> > Thanks,
> > Namhyung
> >
> > Namhyung Kim (4):
> > tools headers UAPI: Sync linux/perf_event.h with the kernel sources
> > tools lib perf: Handle read format in perf_evsel__read()
> > tools lib perf: Add a test case for read formats
> > perf tools: Support reading PERF_FORMAT_LOST
> >
> > tools/include/uapi/linux/perf_event.h | 5 +-
> > tools/lib/perf/evsel.c | 79 ++++++++-
> > tools/lib/perf/include/perf/event.h | 3 +-
> > tools/lib/perf/include/perf/evsel.h | 4 +-
> > tools/lib/perf/tests/test-evsel.c | 161 ++++++++++++++++++
> > tools/perf/tests/sample-parsing.c | 14 +-
> > tools/perf/util/event.h | 21 ++-
> > tools/perf/util/evsel.c | 29 ++--
> > .../scripting-engines/trace-event-python.c | 19 ++-
> > tools/perf/util/session.c | 35 ++--
> > tools/perf/util/synthetic-events.c | 32 +++-
> > 11 files changed, 356 insertions(+), 46 deletions(-)
> >
> >
> > base-commit: 568035b01cfb107af8d2e4bd2fb9aea22cf5b868
> > --
> > 2.37.1.595.g718a3a8f04-goog
> >

--

- Arnaldo