linux-kernel - Re: [PATCH 1/1 v2] perf record: We should fork only if a program was specified to run

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Date:	Sat, 19 Dec 2009 22:39:01 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Arnaldo Carvalho de Melo <acme@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH 1/1 v2] perf record: We should fork only if a program
 was specified to run

On Sat, 2009-12-19 at 19:22 -0200, Arnaldo Carvalho de Melo wrote:
> @@ -550,7 +551,7 @@ static int __cmd_record(int argc __used, const char **argv)
>                         return err;
>         }
>  
> -       if (!system_wide)
> +       if (!system_wide && profile_cpu == -1)
>                 event__synthesize_thread(pid, process_synthesized_event,
>                                          session); 

Not actually sure about this bit though, since we now have
per-task-per-cpu things, the profile_cpu is also used to !system_wide.



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