CAPABILITIES: remove undefined caps from all processes

[platform/adaptation/renesas_rcar/renesas_kernel.git] / kernel / time / tick-sched.c

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 08cb0c3..6558b7a 100644 (file)
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -84,6 +84,9 @@ static void tick_do_update_jiffies64(ktime_t now)
 
                /* Keep the tick_next_period variable up to date */
                tick_next_period = ktime_add(last_jiffies_update, tick_period);
+       } else {
+               write_sequnlock(&jiffies_lock);
+               return;
        }
        write_sequnlock(&jiffies_lock);
        update_wall_time();
@@ -533,12 +536,13 @@ static ktime_t tick_nohz_stop_sched_tick(struct tick_sched *ts,
        struct clock_event_device *dev = __get_cpu_var(tick_cpu_device).evtdev;
        u64 time_delta;
 
+       time_delta = timekeeping_max_deferment();
+
        /* Read jiffies and the time when jiffies were updated last */
        do {
                seq = read_seqbegin(&jiffies_lock);
                last_update = last_jiffies_update;
                last_jiffies = jiffies;
-               time_delta = timekeeping_max_deferment();
        } while (read_seqretry(&jiffies_lock, seq));
 
        if (rcu_needs_cpu(cpu, &rcu_delta_jiffies) ||
@@ -678,18 +682,18 @@ out:
 static void tick_nohz_full_stop_tick(struct tick_sched *ts)
 {
 #ifdef CONFIG_NO_HZ_FULL
-       int cpu = smp_processor_id();
+       int cpu = smp_processor_id();
 
-       if (!tick_nohz_full_cpu(cpu) || is_idle_task(current))
-               return;
+       if (!tick_nohz_full_cpu(cpu) || is_idle_task(current))
+               return;
 
-       if (!ts->tick_stopped && ts->nohz_mode == NOHZ_MODE_INACTIVE)
-              return;
+       if (!ts->tick_stopped && ts->nohz_mode == NOHZ_MODE_INACTIVE)
+               return;
 
-       if (!can_stop_full_tick())
-               return;
+       if (!can_stop_full_tick())
+               return;
 
-       tick_nohz_stop_sched_tick(ts, ktime_get(), cpu);
+       tick_nohz_stop_sched_tick(ts, ktime_get(), cpu);
 #endif
 }
 
@@ -966,7 +970,7 @@ static void tick_nohz_switch_to_nohz(void)
        struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
        ktime_t next;
 
-       if (!tick_nohz_active)
+       if (!tick_nohz_enabled)
                return;
 
        local_irq_disable();
@@ -1023,7 +1027,7 @@ static void tick_nohz_kick_tick(struct tick_sched *ts, ktime_t now)
 #endif
 }
 
-static inline void tick_check_nohz_this_cpu(void)
+static inline void tick_nohz_irq_enter(void)
 {
        struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
        ktime_t now;
@@ -1042,17 +1046,17 @@ static inline void tick_check_nohz_this_cpu(void)
 #else
 
 static inline void tick_nohz_switch_to_nohz(void) { }
-static inline void tick_check_nohz_this_cpu(void) { }
+static inline void tick_nohz_irq_enter(void) { }
 
 #endif /* CONFIG_NO_HZ_COMMON */
 
 /*
  * Called from irq_enter to notify about the possible interruption of idle()
  */
-void tick_check_idle(void)
+void tick_irq_enter(void)
 {
        tick_check_oneshot_broadcast_this_cpu();
-       tick_check_nohz_this_cpu();
+       tick_nohz_irq_enter();
 }
 
 /*