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-rw-r--r--include/linux/tick.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/tick.h b/include/linux/tick.h
index d2ae79e21be..b232ccc0ee2 100644
--- a/include/linux/tick.h
+++ b/include/linux/tick.h
@@ -42,6 +42,7 @@ enum tick_nohz_mode {
42 * @idle_waketime: Time when the idle was interrupted 42 * @idle_waketime: Time when the idle was interrupted
43 * @idle_exittime: Time when the idle state was left 43 * @idle_exittime: Time when the idle state was left
44 * @idle_sleeptime: Sum of the time slept in idle with sched tick stopped 44 * @idle_sleeptime: Sum of the time slept in idle with sched tick stopped
45 * @iowait_sleeptime: Sum of the time slept in idle with sched tick stopped, with IO outstanding
45 * @sleep_length: Duration of the current idle sleep 46 * @sleep_length: Duration of the current idle sleep
46 * @do_timer_lst: CPU was the last one doing do_timer before going idle 47 * @do_timer_lst: CPU was the last one doing do_timer before going idle
47 */ 48 */
@@ -60,7 +61,7 @@ struct tick_sched {
60 ktime_t idle_waketime; 61 ktime_t idle_waketime;
61 ktime_t idle_exittime; 62 ktime_t idle_exittime;
62 ktime_t idle_sleeptime; 63 ktime_t idle_sleeptime;
63 ktime_t idle_lastupdate; 64 ktime_t iowait_sleeptime;
64 ktime_t sleep_length; 65 ktime_t sleep_length;
65 unsigned long last_jiffies; 66 unsigned long last_jiffies;
66 unsigned long next_jiffies; 67 unsigned long next_jiffies;
@@ -124,6 +125,7 @@ extern void tick_nohz_stop_sched_tick(int inidle);
124extern void tick_nohz_restart_sched_tick(void); 125extern void tick_nohz_restart_sched_tick(void);
125extern ktime_t tick_nohz_get_sleep_length(void); 126extern ktime_t tick_nohz_get_sleep_length(void);
126extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time); 127extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time);
128extern u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time);
127# else 129# else
128static inline void tick_nohz_stop_sched_tick(int inidle) { } 130static inline void tick_nohz_stop_sched_tick(int inidle) { }
129static inline void tick_nohz_restart_sched_tick(void) { } 131static inline void tick_nohz_restart_sched_tick(void) { }
@@ -134,6 +136,7 @@ static inline ktime_t tick_nohz_get_sleep_length(void)
134 return len; 136 return len;
135} 137}
136static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; } 138static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; }
139static inline u64 get_cpu_iowait_time_us(int cpu, u64 *unused) { return -1; }
137# endif /* !NO_HZ */ 140# endif /* !NO_HZ */
138 141
139#endif 142#endif