diff options
Diffstat (limited to 'include/linux/delayacct.h')
| -rw-r--r-- | include/linux/delayacct.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/delayacct.h b/include/linux/delayacct.h index 55d1ca5e60f5..ab94bc083558 100644 --- a/include/linux/delayacct.h +++ b/include/linux/delayacct.h @@ -26,6 +26,7 @@ * Used to set current->delays->flags */ #define DELAYACCT_PF_SWAPIN 0x00000001 /* I am doing a swapin */ +#define DELAYACCT_PF_BLKIO 0x00000002 /* I am waiting on IO */ #ifdef CONFIG_TASK_DELAY_ACCT @@ -39,6 +40,14 @@ extern void __delayacct_blkio_end(void); extern int __delayacct_add_tsk(struct taskstats *, struct task_struct *); extern __u64 __delayacct_blkio_ticks(struct task_struct *); +static inline int delayacct_is_task_waiting_on_io(struct task_struct *p) +{ + if (p->delays) + return (p->delays->flags & DELAYACCT_PF_BLKIO); + else + return 0; +} + static inline void delayacct_set_flag(int flag) { if (current->delays) @@ -71,6 +80,7 @@ static inline void delayacct_tsk_free(struct task_struct *tsk) static inline void delayacct_blkio_start(void) { + delayacct_set_flag(DELAYACCT_PF_BLKIO); if (current->delays) __delayacct_blkio_start(); } @@ -79,6 +89,7 @@ static inline void delayacct_blkio_end(void) { if (current->delays) __delayacct_blkio_end(); + delayacct_clear_flag(DELAYACCT_PF_BLKIO); } static inline int delayacct_add_tsk(struct taskstats *d, @@ -116,6 +127,8 @@ static inline int delayacct_add_tsk(struct taskstats *d, { return 0; } static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk) { return 0; } +static inline int delayacct_is_task_waiting_on_io(struct task_struct *p) +{ return 0; } #endif /* CONFIG_TASK_DELAY_ACCT */ #endif |