linux-kernel - Re: [PATCH] perf: sched-pipe add support for packet I/O mode

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Message-ID: <128a7a93-330a-62e8-349f-3eaff289b87c@osg.samsung.com>
Date:   Tue, 27 Sep 2016 10:38:06 -0600
From:   Shuah Khan <shuahkh@....samsung.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     mingo@...hat.com, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, jpoimboe@...hat.com,
        linux-kernel@...r.kernel.org, Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH] perf: sched-pipe add support for packet I/O mode

On 09/27/2016 05:38 AM, Peter Zijlstra wrote:
> On Mon, Sep 26, 2016 at 06:29:44PM -0600, Shuah Khan wrote:
>> Add support to run sched-pipe benchmark test on pipe with packet I/O mode.

I will add more detail here.

>>
>> Signed-off-by: Shuah Khan <shuahkh@....samsung.com>
>> ---
>>  tools/perf/bench/sched-pipe.c | 20 ++++++++++++++++++++
>>  1 file changed, 20 insertions(+)
>>
>> diff --git a/tools/perf/bench/sched-pipe.c b/tools/perf/bench/sched-pipe.c
>> index 1dc2d13..c6e1b7a 100644
>> --- a/tools/perf/bench/sched-pipe.c
>> +++ b/tools/perf/bench/sched-pipe.c
>> @@ -41,9 +41,16 @@ static	int			loops = LOOPS_DEFAULT;
>>  /* Use processes by default: */
>>  static bool			threaded;
>>  
>> +/* Use non-packet (normal) I/O mode by default.
>> + * In packet mode, each write is a separate packet.
>> + */
> 
> Also,
> 
> https://lkml.kernel.org/r/CA+55aFyQYJerovMsSoSKS7PessZBr4vNp-3QUUwhqk4A4_jcbg@mail.gmail.com
> 

Bummer. I missed this comment style bad on my part. I will address both
and send v2.

thanks,
-- Shuah