linux-kernel - Re: trinity finds ftrace/perf bug. Film at 11.

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Message-ID: <20130916093719.GR21832@twins.programming.kicks-ass.net>
Date:	Mon, 16 Sep 2013 11:37:19 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Dave Jones <davej@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: trinity finds ftrace/perf bug. Film at 11.

On Fri, Sep 13, 2013 at 10:16:38AM -0400, Dave Jones wrote:
> without the diff, it'll use all kinds of fds. this diff hardwires it to just use
> fd's from perf_event_open.  I'll hack up a command line switch to do this in a better
> way at some point.
> 
> 	Dave
> 
> 
> diff --git a/fds.c b/fds.c
> index cc1ca6d..f48c95e 100644
> --- a/fds.c
> +++ b/fds.c
> @@ -119,6 +119,8 @@ static int get_new_random_fd(void)
>  retry:
>  	i = rand() % 6;
>  
> +	i = 3;
> +
>  	if (do_specific_proto == TRUE)
>  		i = 1;

I'm just not having much luck it seems, even after actually enabling
list debugging (D0H).

What kind of hardware are you running this on?
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