linux-kernel - Re: [PATCH V4 6/6] coresight: etm-perf: incorporating sink definition from cmd line

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Date:	Fri, 5 Aug 2016 09:44:11 -0600
From:	Mathieu Poirier <mathieu.poirier@...aro.org>
To:	Suzuki K Poulose <Suzuki.Poulose@....com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>, jolsa@...nel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V4 6/6] coresight: etm-perf: incorporating sink definition
 from cmd line

On 5 August 2016 at 03:32, Suzuki K Poulose <Suzuki.Poulose@....com> wrote:
> On 04/08/16 17:53, Mathieu Poirier wrote:
>>
>> Now that PMU specific configuration is available as part of the event,
>> lookup the sink identified by users from the perf command line and build
>> a path from source to sink.
>>
>> With this functionality it is no longer required to select a sink in a
>> separate step (from sysFS) before a perf trace session can be started.
>>
>> Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
>
>
>
>> +static const match_table_t drv_cfg_tokens = {
>> +       {ETM_TOKEN_SINK_CPU, "sink=cpu%d:%s"},
>> +       {ETM_TOKEN_SINK, "sink=%s"},
>> +       {ETM_TOKEN_ERR, NULL},
>> +};
>> +
>
>
> Is the above format documented somewhere for the perf users ? If not could
> we please
> add it ?
>

Yes definitely.  I will document everything once I am done with
upstreaming the feature.  That way we go over the process only once.

> Thanks
> Suzuki
>