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perf: Remove superfluous return values from perf_callchain_*()

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Fixes these build warnings introduced by the callchain
rework:

 arch/x86/kernel/cpu/perf_event.c: In function ‘perf_callchain_kernel’:
 arch/x86/kernel/cpu/perf_event.c:1646: warning: ‘return’ with a value, in function returning void
 arch/x86/kernel/cpu/perf_event.c: In function ‘perf_callchain_user’:
 arch/x86/kernel/cpu/perf_event.c:1699: warning: ‘return’ with a value, in function returning void
 arch/x86/kernel/cpu/perf_event.c: At top level:
 arch/x86/kernel/cpu/perf_event.c:1607: warning: ‘perf_callchain_entry_nmi’ defined but not used

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2010-08-20 14:30:41 +02:00 committed by Ingo Molnar
parent 4c1c952e37
commit ed80526166
1 changed files with 2 additions and 2 deletions
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4
arch/x86/kernel/cpu/perf_event.c
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@ -1610,7 +1610,7 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) {
/* TODO: We don't support guest os callchain now */
return NULL;
return;
}
perf_callchain_store(entry, regs->ip);
@ -1663,7 +1663,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) {
/* TODO: We don't support guest os callchain now */
return NULL;
return;
}
fp = (void __user *)regs->bp;