From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Wed, 3 Mar 2010 06:38:37 +0000 (+0100)
Subject: perf/x86-64: Use frame pointer to walk on irq and process stacks
X-Git-Tag: v2.6.34-rc2~19^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=61e67fb9d3ed13e6a7f58652ae4979b9c872fa57;p=pandora-kernel.git

perf/x86-64: Use frame pointer to walk on irq and process stacks

We were using the frame pointer based stack walker on every
contexts in x86-32, but not in x86-64 where we only use the
seven-league boots on the exception stacks.

Use it also on irq and process stacks. This utterly accelerate
the captures.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
---

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