linux-kernel - Re: [PATCH v2 0/6] Add support for sysfs event.cpus and cpu event term

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Message-ID: <94491b9a-bdf4-453a-9191-25bf431957e0@amd.com>
Date: Thu, 18 Jul 2024 19:12:12 +0530
From: Dhananjay Ugwekar <Dhananjay.Ugwekar@....com>
To: Ian Rogers <irogers@...gle.com>, Peter Zijlstra <peterz@...radead.org>,
 Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>,
 Namhyung Kim <namhyung@...nel.org>, Mark Rutland <mark.rutland@....com>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 Jiri Olsa <jolsa@...nel.org>, Adrian Hunter <adrian.hunter@...el.com>,
 Kan Liang <kan.liang@...ux.intel.com>, Bjorn Helgaas <bhelgaas@...gle.com>,
 Jonathan Corbet <corbet@....net>, James Clark <james.clark@....com>,
 Ravi Bangoria <ravi.bangoria@....com>,
 Dominique Martinet <asmadeus@...ewreck.org>, linux-kernel@...r.kernel.org,
 linux-perf-users@...r.kernel.org, ananth.narayan@....com,
 gautham.shenoy@....com, kprateek.nayak@....com, sandipan.das@....com
Subject: Re: [PATCH v2 0/6] Add support for sysfs event.cpus and cpu event
 term

Hello Ian,

On 7/18/2024 6:00 AM, Ian Rogers wrote:
> The need for a sysfs event.cpus file is discussed here:
> https://lore.kernel.org/lkml/CAP-5=fXXuWchzUK0n5KTH8kamr=DQoEni+bUoo8f-4j8Y+eMBg@mail.gmail.com/
> following Dhananjay Ugwekar's work on the RAPL /sys/devices/power PMU.
> These changes add support for the event.cpus file in sysfs and also a
> cpu event term allowing events to have differing CPUs. This was added
> in order to test the parsing and map propagation for the sysfs case.

Tried applying the patchset on top of v6.10, torvalds/master and tip/master, 
it is failing at patch#2, what is the base commit/branch for this patchset?

Thanks,
Dhananjay

> 
> v2: Add support for multiple cpu terms on an event that are
>     merged. For example, an event of "l1d-misses/cpu=4,cpu=5/" will
>     now be opened on both CPU 4 and 5 rather than just CPU 4.
> 
> Ian Rogers (6):
>   perf pmu: Merge boolean sysfs event option parsing
>   perf parse-events: Pass cpu_list as a perf_cpu_map in __add_event
>   perf pmu: Add support for event.cpus files in sysfs
>   libperf cpumap: Add ability to create CPU from a single CPU number
>   perf parse-events: Set is_pmu_core for legacy hardware events
>   perf parse-events: Add "cpu" term to set the CPU an event is recorded
>     on
> 
>  .../sysfs-bus-event_source-devices-events     |  14 ++
>  tools/lib/perf/cpumap.c                       |  10 ++
>  tools/lib/perf/include/perf/cpumap.h          |   2 +
>  tools/perf/Documentation/perf-list.txt        |   9 +
>  tools/perf/util/evsel_config.h                |   1 +
>  tools/perf/util/parse-events.c                | 162 ++++++++++++------
>  tools/perf/util/parse-events.h                |   3 +-
>  tools/perf/util/parse-events.l                |   1 +
>  tools/perf/util/pmu.c                         |  92 +++++++---
>  tools/perf/util/pmu.h                         |   1 +
>  10 files changed, 221 insertions(+), 74 deletions(-)
>