linux-kernel - Re: [PATCH -tip/master 3/7] locking/mcs: Remove obsolete comment

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Message-ID: <20140728185023.GX19379@twins.programming.kicks-ass.net>
Date:	Mon, 28 Jul 2014 20:50:23 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Jason Low <jason.low2@...com>
Cc:	Davidlohr Bueso <davidlohr@...com>, mingo@...nel.org, aswin@...com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -tip/master 3/7] locking/mcs: Remove obsolete comment

On Mon, Jul 28, 2014 at 10:49:35AM -0700, Jason Low wrote:

> So if the function is inlined, perf report would show the contention
> occurring in the calling function rather than the inlined function. As
> an example, if we were to convert osq_lock() and mutex_spin_on_owner()
> to inline, perf would report all the contention from both of those
> functions occurring in just "__mutex_lock_slowpath()".

But that's easily fixed on the tool side, right? Dwarf info (as present
in vmlinux when build with CONFIG_DEBUG_INFO) has all that.

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