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| author | David Rientjes <rientjes@google.com> | 2013-03-17 15:49:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-03-17 15:59:15 -0700 |
| commit | 6c4d3bc99b3341067775efd4d9d13cc8e655fd7c (patch) | |
| tree | 5fa3c8d83fb28edbf0dce0633460f999eae1f9ba /include/linux/perf_event.h | |
| parent | 2a6e06b2aed6995af401dcd4feb5e79a0c7ea554 (diff) | |
| download | lwn-6c4d3bc99b3341067775efd4d9d13cc8e655fd7c.tar.gz lwn-6c4d3bc99b3341067775efd4d9d13cc8e655fd7c.zip | |
perf,x86: fix link failure for non-Intel configs
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@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/perf_event.h')
| -rw-r--r-- | include/linux/perf_event.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 71caed8626be..1d795df6f4cf 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -758,7 +758,6 @@ extern void perf_event_enable(struct perf_event *event); extern void perf_event_disable(struct perf_event *event); extern int __perf_event_disable(void *info); 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, @@ -798,6 +797,11 @@ static inline void perf_event_enable(struct perf_event *event) { } static inline void perf_event_disable(struct perf_event *event) { } static inline int __perf_event_disable(void *info) { return -1; } 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 |