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-rw-r--r--kernel/time/tick-sched.h44
1 files changed, 23 insertions, 21 deletions
diff --git a/kernel/time/tick-sched.h b/kernel/time/tick-sched.h
index 5ed5a9d41d..b4a7822f49 100644
--- a/kernel/time/tick-sched.h
+++ b/kernel/time/tick-sched.h
@@ -14,20 +14,26 @@ struct tick_device {
enum tick_device_mode mode;
};
-enum tick_nohz_mode {
- NOHZ_MODE_INACTIVE,
- NOHZ_MODE_LOWRES,
- NOHZ_MODE_HIGHRES,
-};
+/* The CPU is in the tick idle mode */
+#define TS_FLAG_INIDLE BIT(0)
+/* The idle tick has been stopped */
+#define TS_FLAG_STOPPED BIT(1)
+/*
+ * Indicator that the CPU is actively in the tick idle mode;
+ * it is reset during irq handling phases.
+ */
+#define TS_FLAG_IDLE_ACTIVE BIT(2)
+/* CPU was the last one doing do_timer before going idle */
+#define TS_FLAG_DO_TIMER_LAST BIT(3)
+/* NO_HZ is enabled */
+#define TS_FLAG_NOHZ BIT(4)
+/* High resolution tick mode */
+#define TS_FLAG_HIGHRES BIT(5)
/**
* struct tick_sched - sched tick emulation and no idle tick control/stats
*
- * @inidle: Indicator that the CPU is in the tick idle mode
- * @tick_stopped: Indicator that the idle tick has been stopped
- * @idle_active: Indicator that the CPU is actively in the tick idle mode;
- * it is reset during irq handling phases.
- * @do_timer_last: CPU was the last one doing do_timer before going idle
+ * @flags: State flags gathering the TS_FLAG_* features
* @got_idle_tick: Tick timer function has run with @inidle set
* @stalled_jiffies: Number of stalled jiffies detected across ticks
* @last_tick_jiffies: Value of jiffies seen on last tick
@@ -40,8 +46,8 @@ enum tick_nohz_mode {
* @next_tick: Next tick to be fired when in dynticks mode.
* @idle_jiffies: jiffies at the entry to idle for idle time accounting
* @idle_waketime: Time when the idle was interrupted
+ * @idle_sleeptime_seq: sequence counter for data consistency
* @idle_entrytime: Time when the idle call was entered
- * @nohz_mode: Mode - one state of tick_nohz_mode
* @last_jiffies: Base jiffies snapshot when next event was last computed
* @timer_expires_base: Base time clock monotonic for @timer_expires
* @timer_expires: Anticipated timer expiration time (in case sched tick is stopped)
@@ -57,11 +63,7 @@ enum tick_nohz_mode {
*/
struct tick_sched {
/* Common flags */
- unsigned int inidle : 1;
- unsigned int tick_stopped : 1;
- unsigned int idle_active : 1;
- unsigned int do_timer_last : 1;
- unsigned int got_idle_tick : 1;
+ unsigned long flags;
/* Tick handling: jiffies stall check */
unsigned int stalled_jiffies;
@@ -73,13 +75,13 @@ struct tick_sched {
ktime_t next_tick;
unsigned long idle_jiffies;
ktime_t idle_waketime;
+ unsigned int got_idle_tick;
/* Idle entry */
seqcount_t idle_sleeptime_seq;
ktime_t idle_entrytime;
/* Tick stop */
- enum tick_nohz_mode nohz_mode;
unsigned long last_jiffies;
u64 timer_expires_base;
u64 timer_expires;
@@ -102,11 +104,11 @@ struct tick_sched {
extern struct tick_sched *tick_get_tick_sched(int cpu);
-extern void tick_setup_sched_timer(void);
-#if defined CONFIG_NO_HZ_COMMON || defined CONFIG_HIGH_RES_TIMERS
-extern void tick_cancel_sched_timer(int cpu);
+extern void tick_setup_sched_timer(bool hrtimer);
+#if defined CONFIG_TICK_ONESHOT
+extern void tick_sched_timer_dying(int cpu);
#else
-static inline void tick_cancel_sched_timer(int cpu) { }
+static inline void tick_sched_timer_dying(int cpu) { }
#endif
#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST