linux-kernel - Re: [PATCH 4/4] perf record: add new -I option to sample interrupted machine state

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Date:	Mon, 14 Jul 2014 19:52:57 +0200
From:	Stephane Eranian <eranian@...gle.com>
To:	Namhyung Kim <namhyung@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH 4/4] perf record: add new -I option to sample interrupted
 machine state

On Mon, Jul 14, 2014 at 10:00 AM, Namhyung Kim <namhyung@...il.com> wrote:
> Hi Stephane,
>
> On Wed,  9 Jul 2014 00:15:59 +0200, Stephane Eranian wrote:
>> Add -I option to capture machine state registers at interrupt.
>
> You need to add it in the Documentation too.
>
I added it for v2.

> Thanks,
> Namhyung
>
>
>>
>> Use perf report -D to display the sampled register values
>> in each sample.
>>
>> Signed-off-by: Stephane Eranian <eranian@...gle.com>
>> ---
>>  tools/perf/builtin-record.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
>> index 378b85b..17c45f8 100644
>> --- a/tools/perf/builtin-record.c
>> +++ b/tools/perf/builtin-record.c
>> @@ -876,6 +876,8 @@ const struct option record_options[] = {
>>                   "sample transaction flags (special events only)"),
>>       OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread,
>>                   "use per-thread mmaps"),
>> +     OPT_BOOLEAN('I', "sample-intr-regs", &record.opts.sample_intr_regs,
>> +                 "Sample machine register on interrupt"),
>>       OPT_END()
>>  };
--
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