From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Sat, 3 Apr 2010 10:22:05 +0000 (+0200)
Subject: perf: Always build the stub perf_arch_fetch_caller_regs version
X-Git-Tag: v2.6.34-rc4~75^2~1
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=26d80aa782e708c380a47601779d42d30bf016d6;p=~emulex%2Finfiniband.git

perf: Always build the stub perf_arch_fetch_caller_regs version

Now that software events use perf_arch_fetch_caller_regs() too, we
need the stub version to be always built in for archs that don't
implement it.

Fixes the following build error in PARISC:

	kernel/built-in.o: In function `perf_event_task_sched_out':
	(.text.perf_event_task_sched_out+0x54): undefined reference to `perf_arch_fetch_caller_regs'

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

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 96aae13c796..681af806d76 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -2784,12 +2784,11 @@ __weak struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
 	return NULL;
 }
 
-#ifdef CONFIG_EVENT_TRACING
 __weak
 void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int skip)
 {
 }
-#endif
+
 
 /*
  * Output