linux-kernel - Re: [BUG] perf: arch_perf_out_copy

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Message-ID: <20131030193538.GQ16117@laptop.programming.kicks-ass.net>
Date:	Wed, 30 Oct 2013 20:35:38 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Will Deacon <will.deacon@....com>
Cc:	"fweisbec@...il.com" <fweisbec@...il.com>,
	"mingo@...nel.org" <mingo@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [BUG] perf: arch_perf_out_copy_user default

On Wed, Oct 30, 2013 at 07:29:27PM +0000, Will Deacon wrote:
> Yeah, that's weird, because they *do* appear to work! In fact, looking at
> the code in kernel/events/core.c, it looks like __output_copy_user is
> expected to return the number of bytes not copied, 

Oh, cute, double fail.. head hurts.
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