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-rw-r--r--kernel/sched_clock.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/sched_clock.c b/kernel/sched_clock.c
index ce05271219a..3c696db5945 100644
--- a/kernel/sched_clock.c
+++ b/kernel/sched_clock.c
@@ -244,3 +244,15 @@ unsigned long long __attribute__((weak)) sched_clock(void)
{
return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ);
}
+
+unsigned long long cpu_clock(int cpu)
+{
+ unsigned long long clock;
+ unsigned long flags;
+
+ raw_local_irq_save(flags);
+ clock = sched_clock_cpu(cpu);
+ raw_local_irq_restore(flags);
+
+ return clock;
+}