linux-kernel - Re: [RFC] perf: mmap2 not covering VM

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Message-ID: <20131008065449.GL3081@twins.programming.kicks-ass.net>
Date:	Tue, 8 Oct 2013 08:54:49 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	Kees Cook <keescook@...omium.org>, Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...hat.com>,
	Hugh Dickins <hughd@...gle.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC] perf: mmap2 not covering VM_CLONE regions

On Mon, Oct 07, 2013 at 11:04:38PM +0200, Stephane Eranian wrote:
> Peter,
> 
> Ok, so I tried this. It does not cover shmat() cases unfortunately.
> We need that same ++global_mm_id somewhere on that code path.
> Haven't looked at it in details just yet.

shmat() is a regular shared memory thingy right? So that should be
covered by the regular inode,dev bits, right?
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