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

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Message-ID: <ae462f089fd4375fe44b09361fb955af@server102.greatnet.de>
Date:	Sun, 18 Dec 2011 16:22:13 +0100
From:	Benjamin Block <bebl@...eta.org>
To:	Ingo Molnar <mingo@...e.hu>
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)


On Sun, 18 Dec 2011 09:04:43 +0100, Ingo Molnar <mingo@...e.hu> wrote:
> * Hans Rosenfeld <hans.rosenfeld@....com> wrote:
> 
>> From: Benjamin Block <benjamin.block@....com>
>> 
>> Implements a basic integration of LWP into perf. Permits a way 
>> to create a perf-event that will be backed by LWP. The PMU 
>> creates the required structures and userspace-memories. The 
>> PMU also collects the samples from the ring-buffer, but as 
>> there is currently no interrupt- and overflow-implementation, 
>> they are not reported (TODO).
> 
> Ok, this is a step in the right direction - once the threshold 
> IRQ flow control mechanism is implemented we are looking at 
> something that might be mergeable. Any ETA on those bits?
> 

The threshold-interrupt is already integrated with patch 5 of this 
patch-set.

Maybe I wrote the descriptions a little misleading. Sry for that. :)

best regards,
- Benjamin
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