linux-kernel - Re: [PATCH 0/3] perf: Allow running without stdin

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Date:   Thu, 24 Oct 2019 10:24:01 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Igor Lubashev <ilubashe@...mai.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/3] perf: Allow running without stdin

On Tue, Oct 22, 2019 at 09:54:50PM -0400, Igor Lubashev wrote:
> This series allows perf to run in batch mode with stdin closed.
> This is arguably a bug fix for code that runs with --stdio option and does not
> check for EOF return code from getc().
> 
> This series makes the following work as expected:
> 
>   $ perf top --stdio < /dev/null
>   $ perf kvm top --stdio < /dev/null
> 
> Patches:
>   01: perf top: Allow running without stdin
>     Make "perf top --stdio" handle EOF from stdin correctly.
>     There is one getc() that does not handle EOF explicitly, since its return
>     value is checked against a list of known characters, and the main loop in
>     display_thread() will handle the EOF on the next iteration.
> 
>   02: perf kvm: Allow running without stdin
>     Make "perf kvm --stdio" handle EOF from stdin correctly.
> 
>   03: perf kvm: Use evlist layer api when possible
>     This is a simple fix for a needless layering violation.
> 
> Igor Lubashev (3):
>   perf top: Allow running without stdin
>   perf kvm: Allow running without stdin
>   perf kvm: Use evlist layer api when possible

Acked-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka

> 
>  tools/perf/builtin-kvm.c | 35 +++++++++++++++++++++--------------
>  tools/perf/builtin-top.c | 10 ++++++++--
>  2 files changed, 29 insertions(+), 16 deletions(-)
> 
> -- 
> 2.7.4
>