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Re: [RFC] gcc feature request: Moving blocks into sections
- From: Andi Kleen <andi at firstfloor dot org>
- To: "H. Peter Anvin" <hpa at linux dot intel dot com>
- Cc: Peter Zijlstra <peterz at infradead dot org>, Steven Rostedt <rostedt at goodmis dot org>, LKML <linux-kernel at vger dot kernel dot org>, gcc <gcc at gcc dot gnu dot org>, Linus Torvalds <torvalds at linux-foundation dot org>, Ingo Molnar <mingo at kernel dot org>, Mathieu Desnoyers <mathieu dot desnoyers at efficios dot com>, Thomas Gleixner <tglx at linutronix dot de>, David Daney <ddaney dot cavm at gmail dot com>, Behan Webster <behanw at converseincode dot com>
- Date: Mon, 12 Aug 2013 09:02:02 -0700
- Subject: Re: [RFC] gcc feature request: Moving blocks into sections
- References: <1375721715 dot 22073 dot 80 dot camel at gandalf dot local dot home> <20130812091707 dot GB27162 at twins dot programming dot kicks-ass dot net> <5208F78A dot 3000708 at linux dot intel dot com>
"H. Peter Anvin" <hpa@linux.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@linux.intel.com -- Speaking for myself only