linux-kernel - Re: [PATCH v3 0/10] libperf and arm64 userspace counter access support

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Date:   Sat, 12 Sep 2020 22:53:17 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Raphael Gault <raphael.gault@....com>,
        Mark Rutland <mark.rutland@....com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Ian Rogers <irogers@...gle.com>, honnappa.nagarahalli@....com
Subject: Re: [PATCH v3 0/10] libperf and arm64 userspace counter access
 support

On Fri, Sep 11, 2020 at 03:51:08PM -0600, Rob Herring wrote:
> This is resurrecting Raphael's series[1] to enable userspace counter
> access on arm64. My previous versions are here[2][3].
> 
> Changes in v3:
>  - Dropped removing x86 rdpmc test until libperf tests can run via 'perf test'
>  - Added verbose prints for tests
>  - Split adding perf_evsel__mmap() to separate patch

hi,
which commit/branch did you base on? I can't apply arm bits:

Applying: arm64: pmu: Add hook to handle pmu-related undefined instructions
Applying: arm64: perf: Enable pmu counter direct access for perf event on armv8
error: patch failed: arch/arm64/kernel/perf_event.c:836
error: arch/arm64/kernel/perf_event.c: patch does not apply
Patch failed at 0002 arm64: perf: Enable pmu counter direct access for perf event on armv8

thanks,
jirka