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-rw-r--r--arch/x86/include/asm/tsc.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h
index 83e2efd181e2..15d99153a96d 100644
--- a/arch/x86/include/asm/tsc.h
+++ b/arch/x86/include/asm/tsc.h
@@ -51,6 +51,8 @@ extern int unsynchronized_tsc(void);
extern int check_tsc_unstable(void);
extern unsigned long native_calibrate_tsc(void);
+extern int tsc_clocksource_reliable;
+
/*
* Boot-time check whether the TSCs are synchronized across
* all CPUs/cores: