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-rw-r--r--kernel/sched_clock.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/sched_clock.c b/kernel/sched_clock.c
index ce05271219a..e383bc7df6d 100644
--- a/kernel/sched_clock.c
+++ b/kernel/sched_clock.c
@@ -40,7 +40,7 @@ struct sched_clock_data {
*/
raw_spinlock_t lock;
- unsigned long prev_jiffies;
+ unsigned long tick_jiffies;
u64 prev_raw;
u64 tick_raw;
u64 tick_gtod;
@@ -71,7 +71,7 @@ void sched_clock_init(void)
struct sched_clock_data *scd = cpu_sdc(cpu);
scd->lock = (raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED;
- scd->prev_jiffies = now_jiffies;
+ scd->tick_jiffies = now_jiffies;
scd->prev_raw = 0;
scd->tick_raw = 0;
scd->tick_gtod = ktime_now;
@@ -90,7 +90,7 @@ void sched_clock_init(void)
static void __update_sched_clock(struct sched_clock_data *scd, u64 now)
{
unsigned long now_jiffies = jiffies;
- long delta_jiffies = now_jiffies - scd->prev_jiffies;
+ long delta_jiffies = now_jiffies - scd->tick_jiffies;
u64 clock = scd->clock;
u64 min_clock, max_clock;
s64 delta = now - scd->prev_raw;
@@ -119,7 +119,6 @@ static void __update_sched_clock(struct sched_clock_data *scd, u64 now)
clock = min_clock;
scd->prev_raw = now;
- scd->prev_jiffies = now_jiffies;
scd->clock = clock;
}
@@ -179,6 +178,7 @@ u64 sched_clock_cpu(int cpu)
void sched_clock_tick(void)
{
struct sched_clock_data *scd = this_scd();
+ unsigned long now_jiffies = jiffies;
u64 now, now_gtod;
if (unlikely(!sched_clock_running))
@@ -196,6 +196,7 @@ void sched_clock_tick(void)
* already observe 1 new jiffy; adding a new tick_gtod to that would
* increase the clock 2 jiffies.
*/
+ scd->tick_jiffies = now_jiffies;
scd->tick_raw = now;
scd->tick_gtod = now_gtod;
__raw_spin_unlock(&scd->lock);