linux-kernel - Re: [PATCH v1 8/9] perf stat: Remove --per-thread pid/tid limitation

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Message-ID: <20171122083514.GD30707@krava>
Date:   Wed, 22 Nov 2017 09:35:14 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     "Jin, Yao" <yao.jin@...ux.intel.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 v1 8/9] perf stat: Remove --per-thread pid/tid limitation

On Wed, Nov 22, 2017 at 11:42:05AM +0800, Jin, Yao wrote:
> 
> 
> On 11/21/2017 11:18 PM, Jiri Olsa wrote:
> > On Mon, Nov 20, 2017 at 10:43:43PM +0800, Jin Yao wrote:
> > 
> > SNIP
> > 
> > > -	if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
> > > -		fprintf(stderr, "The --per-thread option is only available "
> > > -			"when monitoring via -p -t options.\n");
> > > -		parse_options_usage(NULL, stat_options, "p", 1);
> > > -		parse_options_usage(NULL, stat_options, "t", 1);
> > > -		goto out;
> > > +	if ((stat_config.aggr_mode == AGGR_THREAD) &&
> > > +		!target__has_task(&target)) {
> > > +		if (!target.system_wide || target.cpu_list) {
> > > +			fprintf(stderr, "The --per-thread option is only "
> > > +				"available when monitoring via -p -t "
> > > +				"options.\n");
> > 
> > the message should be updated with '-a' option, that you just added,
> 
> OK. Could I update the message like this?
> 
> "The --per-thread option is only "
> "available when monitoring via -p -t -a"
> "options or only --per-thread without any other option"
> 
> > also why dont we support target.cpu_list, it should work no?
> > 
> 
> Currently it doesn't support cpu_list.
> 
> I just think this patch series is too big and I wish to add supporting for
> cpu_list, cgroup or others in follow up patches.
> 
> Is that OK?

ok, thanks

jirka