linux-kernel - Re: [RFC 4/5] x86, perf: implements lwp-perf-integration (rc1)

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Date:	Mon, 19 Dec 2011 00:43:10 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Benjamin Block <bebl@...eta.org>
Cc:	Hans Rosenfeld <hans.rosenfeld@....com>, hpa@...or.com,
	tglx@...utronix.de, suresh.b.siddha@...el.com, eranian@...gle.com,
	brgerst@...il.com, robert.richter@....com,
	Andreas.Herrmann3@....com, x86@...nel.org,
	linux-kernel@...r.kernel.org,
	Benjamin Block <benjamin.block@....com>
Subject: Re: [RFC 4/5] x86, perf: implements lwp-perf-integration (rc1)


* Benjamin Block <bebl@...eta.org> wrote:

> The threshold-interrupt is already integrated with patch 5 of 
> this patch-set.
> 
> Maybe I wrote the descriptions a little misleading. Sry for 
> that. :)

Okay, i stopped reading at the first patch that claimed that the 
threshold irq was not supported ;-)

So the question becomes, how well is it integrated: can
perf 'record -a + perf report', or 'perf top' use LWP,
to do system-wide precise [user-space] profiling and such?

Thanks,

	Ingo
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