linux-kernel - Re: [patch 9/9] Scheduler profiling

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Message-Id: <20070530133407.4f5789a0.akpm@linux-foundation.org>
Date:	Wed, 30 May 2007 13:34:07 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [patch 9/9] Scheduler profiling - Use conditional calls

On Wed, 30 May 2007 10:00:34 -0400
Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca> wrote:

> @@ -2990,7 +2991,8 @@
>  			print_irqtrace_events(prev);
>  		dump_stack();
>  	}
> -	profile_hit(SCHED_PROFILING, __builtin_return_address(0));
> +	cond_call(profile_on,
> +		profile_hit(SCHED_PROFILING, __builtin_return_address(0)));
>  

That's looking pretty neat.  Do you have any before-and-after performance
figures for i386 and for a non-optimised architecture?
-
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