linux-kernel - Re: [PATCH v4 1/7] perf util: Create streams

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Message-ID: <4cef1f08-e1c1-3227-24f2-be3108ea4d99@linux.intel.com>
Date:   Tue, 1 Sep 2020 10:26:25 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v4 1/7] perf util: Create streams

Hi Jiri,

On 8/31/2020 9:56 PM, Jiri Olsa wrote:
> On Tue, Aug 25, 2020 at 07:35:07AM +0800, Jin Yao wrote:
> 
> SNIP
> 
>> +						  int nr_streams_max,
>> +						  enum stream_type type)
>> +{
>> +	struct evsel_streams *es;
>> +	int nr_evsel = evlist->core.nr_entries, ret = -1;
>> +
>> +	es = create_evsel_streams(nr_evsel, nr_streams_max);
>> +	if (!es)
>> +		return NULL;
>> +
>> +	if (type == STREAM_CALLCHAIN)
>> +		ret = evlist_init_callchain_streams(evlist, es, nr_evsel);
>> +
>> +	if (ret) {
>> +		free_evsel_streams(es, nr_evsel);
>> +		return NULL;
>> +	}
>> +
>> +	return es;
>> +}
>> diff --git a/tools/perf/util/stream.h b/tools/perf/util/stream.h
>> new file mode 100644
>> index 000000000000..a8a0172b4d13
>> --- /dev/null
>> +++ b/tools/perf/util/stream.h
>> @@ -0,0 +1,30 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +#ifndef __PERF_STREAM_H
>> +#define __PERF_STREAM_H
>> +
>> +#include "callchain.h"
>> +
>> +enum stream_type {
>> +	STREAM_NONE = 0,
>> +	STREAM_CALLCHAIN
> 
> do you plan to add more types?
> 
> jirka
> 

Thanks for looking at this patch series.

So far, no more types in plan. :)

Thanks
Jin Yao