linux-kernel - Re: [PATCH v1 1/2] perf/core: Use sysctl to turn on/off dropping leaked kernel samples

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Message-ID: <CA+55aFwRC6gszsHsGcOonV5SHDb7SxWKWbMQsTZ7KD85G_SnLQ@mail.gmail.com>
Date:   Sat, 16 Jun 2018 10:27:27 +0900
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Mark Rutland <mark.rutland@....com>
Cc:     yao.jin@...ux.intel.com,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Kyle Huey <me@...ehuey.com>,
        Linux Kernel Mailing List <Linux-kernel@...r.kernel.org>,
        Vince Weaver <vincent.weaver@...ne.edu>,
        Will Deacon <will.deacon@....com>,
        Stephane Eranian <eranian@...gle.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        "Liang, Kan" <kan.liang@...el.com>, yao.jin@...el.com
Subject: Re: [PATCH v1 1/2] perf/core: Use sysctl to turn on/off dropping
 leaked kernel samples

On Fri, Jun 15, 2018 at 8:36 PM Mark Rutland <mark.rutland@....com> wrote:
>
> At least for sampling the GPRs, we could do something like below
> unconditionally, which seems sufficient for my test cases.

Ack.

The PEBS case may need checking, but maybe PEBS doesn't even have this issue?

                 Linus