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-rw-r--r--kernel/timer.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/timer.c b/kernel/timer.c
index 0256ab443d8..feddf817baa 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1146,11 +1146,15 @@ static inline void calc_load(unsigned long ticks)
unsigned long active_tasks; /* fixed-point */
static int count = LOAD_FREQ;
- active_tasks = count_active_tasks();
- for (count -= ticks; count < 0; count += LOAD_FREQ) {
- CALC_LOAD(avenrun[0], EXP_1, active_tasks);
- CALC_LOAD(avenrun[1], EXP_5, active_tasks);
- CALC_LOAD(avenrun[2], EXP_15, active_tasks);
+ count -= ticks;
+ if (unlikely(count < 0)) {
+ active_tasks = count_active_tasks();
+ do {
+ CALC_LOAD(avenrun[0], EXP_1, active_tasks);
+ CALC_LOAD(avenrun[1], EXP_5, active_tasks);
+ CALC_LOAD(avenrun[2], EXP_15, active_tasks);
+ count += LOAD_FREQ;
+ } while (count < 0);
}
}