linux-kernel - Re: [RFC] gcc feature request: Moving blocks into sections

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Date:	Mon, 12 Aug 2013 09:02:02 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	"H. Peter Anvin" <hpa@...ux.intel.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>, gcc <gcc@....gnu.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	David Daney <ddaney.cavm@...il.com>,
	Behan Webster <behanw@...verseincode.com>
Subject: Re: [RFC] gcc feature request: Moving blocks into sections

"H. Peter Anvin" <hpa@...ux.intel.com> writes:

> However, I would really like to
> understand what the value is.

Probably very little. When I last looked at it, the main overhead in
perf currently seems to be backtraces and the ring buffer, not this
code.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only
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