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-rw-r--r--arch/arm/include/asm/sched_clock.h2
-rw-r--r--arch/arm/kernel/sched_clock.c9
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/include/asm/sched_clock.h b/arch/arm/include/asm/sched_clock.h
index e3f7572..3d520dd 100644
--- a/arch/arm/include/asm/sched_clock.h
+++ b/arch/arm/include/asm/sched_clock.h
@@ -11,4 +11,6 @@
extern void sched_clock_postinit(void);
extern void setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate);
+extern unsigned long long (*sched_clock_func)(void);
+
#endif
diff --git a/arch/arm/kernel/sched_clock.c b/arch/arm/kernel/sched_clock.c
index 040168e..8805848 100644
--- a/arch/arm/kernel/sched_clock.c
+++ b/arch/arm/kernel/sched_clock.c
@@ -165,12 +165,19 @@ void __init setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate)
pr_debug("Registered %pF as sched_clock source\n", read);
}
-unsigned long long notrace sched_clock(void)
+static unsigned long long notrace sched_clock_32(void)
{
u32 cyc = read_sched_clock();
return cyc_to_sched_clock(cyc, sched_clock_mask);
}
+unsigned long long __read_mostly (*sched_clock_func)(void) = sched_clock_32;
+
+unsigned long long notrace sched_clock(void)
+{
+ return sched_clock_func();
+}
+
void __init sched_clock_postinit(void)
{
/*
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