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-rw-r--r--arch/s390/include/asm/perf_event.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h
index 4cb19fe76dd9..f897ec73dc8c 100644
--- a/arch/s390/include/asm/perf_event.h
+++ b/arch/s390/include/asm/perf_event.h
@@ -87,7 +87,15 @@ struct sf_raw_sample {
} __packed;
/* Perf hardware reserve and release functions */
+#ifdef CONFIG_PERF_EVENTS
int perf_reserve_sampling(void);
void perf_release_sampling(void);
+#else /* CONFIG_PERF_EVENTS */
+static inline int perf_reserve_sampling(void)
+{
+ return 0;
+}
+static inline void perf_release_sampling(void) {}
+#endif /* CONFIG_PERF_EVENTS */
#endif /* _ASM_S390_PERF_EVENT_H */