> -----Original Message----- > From: Tomasz Duszynski <[email protected]> > Sent: Thursday, February 2, 2023 5:44 PM > To: [email protected]; [email protected]; Tomasz Duszynski > <[email protected]> > Cc: [email protected]; Ruifeng Wang <[email protected]>; > [email protected]; [email protected]; [email protected]; > [email protected]; [email protected] > Subject: [PATCH v8 1/4] lib: add generic support for reading PMU events > > Add support for programming PMU counters and reading their values in runtime > bypassing > kernel completely. > > This is especially useful in cases where CPU cores are isolated > (nohz_full) i.e run dedicated tasks. In such cases one cannot use standard > perf utility > without sacrificing latency and performance. > > Signed-off-by: Tomasz Duszynski <[email protected]> > Acked-by: Morten Brørup <[email protected]> > --- > MAINTAINERS | 5 + > app/test/meson.build | 1 + > app/test/test_pmu.c | 55 +++ > doc/api/doxy-api-index.md | 3 +- > doc/api/doxy-api.conf.in | 1 + > doc/guides/prog_guide/profile_app.rst | 8 + > doc/guides/rel_notes/release_23_03.rst | 9 + > lib/meson.build | 1 + > lib/pmu/meson.build | 13 + > lib/pmu/pmu_private.h | 29 ++ > lib/pmu/rte_pmu.c | 464 +++++++++++++++++++++++++ > lib/pmu/rte_pmu.h | 205 +++++++++++ > lib/pmu/version.map | 20 ++ > 13 files changed, 813 insertions(+), 1 deletion(-) create mode 100644 > app/test/test_pmu.c create mode 100644 lib/pmu/meson.build create mode > 100644 > lib/pmu/pmu_private.h create mode 100644 lib/pmu/rte_pmu.c create mode > 100644 > lib/pmu/rte_pmu.h create mode 100644 lib/pmu/version.map > <snip>
> diff --git a/doc/guides/rel_notes/release_23_03.rst > b/doc/guides/rel_notes/release_23_03.rst > index 73f5d94e14..733541d56c 100644 > --- a/doc/guides/rel_notes/release_23_03.rst > +++ b/doc/guides/rel_notes/release_23_03.rst > @@ -55,10 +55,19 @@ New Features > Also, make sure to start the actual text at the margin. > ======================================================= > > +* **Added PMU library.** > + > + Added a new PMU (performance measurement unit) library which allows Overall looks good to me. Just a minor comment. Should it be 'performance *monitoring* unit'? I see the same terminology is used across architectures. It will be better if we align with that. Thanks. <snip>
