time: adjtimex: Validate the ADJ_FREQUENCY values

[firefly-linux-kernel-4.4.55.git] / kernel / time / tick-sched.c

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 0cf1c14531817eacb61eae48f6f76a45a0cc8027..67f7a2d2efbcad60cf0e698fc33bcb12d1b92c10 100644 (file)
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -720,8 +720,10 @@ static bool can_stop_idle_tick(int cpu, struct tick_sched *ts)
                return false;
        }
 
-       if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE))
+       if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE)) {
+               ts->sleep_length = (ktime_t) { .tv64 = NSEC_PER_SEC/HZ };
                return false;
+       }
 
        if (need_resched())
                return false;
@@ -832,13 +834,10 @@ void tick_nohz_irq_exit(void)
 {
        struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
 
-       if (ts->inidle) {
-               /* Cancel the timer because CPU already waken up from the C-states*/
-               menu_hrtimer_cancel();
+       if (ts->inidle)
                __tick_nohz_idle_enter(ts);
-       } else {
+       else
                tick_nohz_full_stop_tick(ts);
-       }
 }
 
 /**
@@ -936,8 +935,6 @@ void tick_nohz_idle_exit(void)
 
        ts->inidle = 0;
 
-       /* Cancel the timer because CPU already waken up from the C-states*/
-       menu_hrtimer_cancel();
        if (ts->idle_active || ts->tick_stopped)
                now = ktime_get();