[ 3.5.y.z extended stable ] Patch "perf, x86: fix link failure for non-Intel configs" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    perf,x86: fix link failure for non-Intel configs

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

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>From bf3717d8b4c20758357c5b0aa160f047446847a6 Mon Sep 17 00:00:00 2001
From: David Rientjes <rientjes at google.com>
Date: Sun, 17 Mar 2013 15:49:10 -0700
Subject: [PATCH] perf,x86: fix link failure for non-Intel configs

commit 6c4d3bc99b3341067775efd4d9d13cc8e655fd7c upstream.

Commit 1d9d8639c063 ("perf,x86: fix kernel crash with PEBS/BTS after
suspend/resume") introduces a link failure since
perf_restore_debug_store() is only defined for CONFIG_CPU_SUP_INTEL:

	arch/x86/power/built-in.o: In function `restore_processor_state':
	(.text+0x45c): undefined reference to `perf_restore_debug_store'

Fix it by defining the dummy function appropriately.

Signed-off-by: David Rientjes <rientjes at google.com>
Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>
Luis Henriques <luis.henriques at canonical.com>
---
 include/linux/perf_event.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 1d56bf6..c145c45 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1295,7 +1295,6 @@ extern void perf_swevent_put_recursion_context(int rctx);
 extern void perf_event_enable(struct perf_event *event);
 extern void perf_event_disable(struct perf_event *event);
 extern void perf_event_task_tick(void);
-extern void perf_restore_debug_store(void);
 #else
 static inline void
 perf_event_task_sched_in(struct task_struct *prev,
@@ -1334,6 +1333,11 @@ static inline void perf_swevent_put_recursion_context(int rctx)		{ }
 static inline void perf_event_enable(struct perf_event *event)		{ }
 static inline void perf_event_disable(struct perf_event *event)		{ }
 static inline void perf_event_task_tick(void)				{ }
+#endif
+
+#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL)
+extern void perf_restore_debug_store(void);
+#else
 static inline void perf_restore_debug_store(void)			{ }
 #endif

--
1.8.1.2