perf: Remove superfluous return values from perf_callchain_*()
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>
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 8e91cf3..acc52af 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1610,7 +1610,7 @@
{
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 @@
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;