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-rw-r--r--arch/arm/kernel/time.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 174cd4900bf..3c8cdcfe8d4 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -87,6 +87,17 @@ unsigned long long __attribute__((weak)) sched_clock(void)
return (unsigned long long)jiffies * (1000000000 / HZ);
}
+/*
+ * An implementation of printk_clock() independent from
+ * sched_clock(). This avoids non-bootable kernels when
+ * printk_clock is enabled.
+ */
+unsigned long long printk_clock(void)
+{
+ return (unsigned long long)(jiffies - INITIAL_JIFFIES) *
+ (1000000000 / HZ);
+}
+
static unsigned long next_rtc_update;
/*