From: Steven Rostedt <rostedt@goodmis.org>
Date: Mon, 12 May 2008 19:20:55 +0000 (+0200)
Subject: ftrace: user raw_spin_lock in tracing
X-Git-Tag: v2.6.27-rc1~1102^2^2~1^2~69
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=92205c2343527a863d660360599a4bf8cede77b0;p=pandora-kernel.git

ftrace: user raw_spin_lock in tracing

Lock debugging enabled cause huge performance problems for tracing. Having
the lock verification happening for every function that is called
because mcount calls spin_lock can cripple the system.

This patch converts the spin_locks used by ftrace into raw_spin_locks.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

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