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-rw-r--r--include/linux/perf_event.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index cf65763af0cb..547773f5894e 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1544,4 +1544,8 @@ int perf_event_exit_cpu(unsigned int cpu);
#define perf_event_exit_cpu NULL
#endif
+extern void __weak arch_perf_update_userpage(struct perf_event *event,
+ struct perf_event_mmap_page *userpg,
+ u64 now);
+
#endif /* _LINUX_PERF_EVENT_H */