linux-kernel - Re: [PATCH] perf_counter: Always schedule all software counters in

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Message-ID: <20090112091452.GH26750@elte.hu>
Date:	Mon, 12 Jan 2009 10:14:52 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] perf_counter: Always schedule all software counters in


* Paul Mackerras <paulus@...ba.org> wrote:

> Software counters aren't subject to the limitations imposed by the fixed 
> number of hardware counter registers, so there is no reason not to 
> enable them all in __perf_counter_sched_in.  Previously we used to break 
> out of the loop when we got to a group that wouldn't fit on the PMU; 
> with this we continue through the list but only schedule in software 
> counters (or groups containing only software counters) from there on.

yeah, makes sense.

> Signed-off-by: Paul Mackerras <paulus@...ba.org>
> ---
> This is also available in my perfcounters git tree (master branch) at
> git://git.kernel.org/pub/scm/linux/kernel/git/paulus/perfcounters.git

Pulled into tip/perfcounters/core, thanks Paul!

	Ingo
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