linux-kernel - Re: [PATCH 5/6] perf record: Add 'snapshot' control command

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Message-ID: <20200831062332.GW1509399@tassilo.jf.intel.com>
Date:   Sun, 30 Aug 2020 23:23:32 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/6] perf record: Add 'snapshot' control command

On Sat, Aug 29, 2020 at 01:50:14PM +0300, Adrian Hunter wrote:
> Add 'snapshot' control command to create an AUX area tracing snapshot the
> same as if sending SIGUSR2. The advantage of the FIFO is that access is
> governed by access to the FIFO.

How about the --switch-output SIGUSR2 switch? Could that be handled too?

Other than that it looks great. Thanks.

-Andi