diff options
| author | Frederic Weisbecker <fweisbec@gmail.com> | 2010-03-16 01:05:02 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-03-16 09:27:27 +0100 |
| commit | 1d199b1ad606ae8b88acebd295b101c4e1cf2a57 (patch) | |
| tree | 1d08629d41f7d0fa6ffd7780fd3caf3d18ca8de7 /kernel/perf_event.c | |
| parent | d06d92b7c9b99ea52bdaeb13f544675529891b8a (diff) | |
perf: Fix unexported generic perf_arch_fetch_caller_regs
perf_arch_fetch_caller_regs() is exported for the overriden x86
version, but not for the generic weak version.
As a general rule, weak functions should not have their symbol
exported in the same file they are defined.
So let's export it on trace_event_perf.c as it is used by trace
events only.
This fixes:
ERROR: ".perf_arch_fetch_caller_regs" [fs/xfs/xfs.ko] undefined!
ERROR: ".perf_arch_fetch_caller_regs" [arch/powerpc/platforms/cell/spufs/spufs.ko] undefined!
-v2: And also only build it if trace events are enabled.
-v3: Fix changelog mistake
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1268697902-9518-1-git-send-regression-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/perf_event.c')
| -rw-r--r-- | kernel/perf_event.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 8bf61273c58..455393e71ca 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -2790,10 +2790,12 @@ __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 |