another small fixlet.

From 19b3e9671c5a219b8c34da2cc66e0ce7c3a501ae Mon Sep 17 00:00:00 2001
From: Ingo Molnar
Date: Tue, 11 Nov 2008 11:57:02 +0100
Subject: [PATCH] tracing: function return tracer, build fix


arch/x86/kernel/ftrace.c: In function 'ftrace_return_to_handler':
arch/x86/kernel/ftrace.c:112: error: implicit declaration of function 'cpu_clock'

cpu_clock() is implicitly included via a number of ways, but its real
location is sched.h. (Build failure is triggerable if enough other
kernel components are turned off.)

Signed-off-by: Ingo Molnar
arch/x86/kernel/ftrace.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 9b2325a..16a571d 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -14,6 +14,7 @@

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