arch/x86/kernel/cpu/perf_event.c defines a function
arch_perf_update_userpage, overriding a __weak stub for that function
defined in kernel/events/core.c. Nothing currently prototypes that
function. Add a prototype right before the definition, to satisfy gcc
(-Wmissing-prototypes) and Sparse (-Wdecl).
arch/x86/kernel/cpu/perf_event.c:1692:6: warning: no previous prototype for
‘arch_perf_update_userpage’ [-Wmissing-prototypes]
Signed-off-by: Josh Triplett <j...@joshtriplett.org>
---
arch/x86/kernel/cpu/perf_event.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 4a3374e..2d070cb 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1689,6 +1689,8 @@ static struct pmu pmu = {
.flush_branch_stack = x86_pmu_flush_branch_stack,
};
+void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now);
+
void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now)
{
userpg->cap_usr_time = 0;
--
1.7.10.4
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