diff options
| author | Shailabh Nagar <nagar@watson.ibm.com> | 2006-07-14 00:24:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-14 21:53:57 -0700 |
| commit | 25890454667b3295f67b3372352be90705f8667c (patch) | |
| tree | f66e24be59ced75853eb82709e3036e735aac21e /include/linux/delayacct.h | |
| parent | a3baf649ca9ca0a96fba538f03b0f17c043b755c (diff) | |
[PATCH] per-task-delay-accounting: /proc export of aggregated block I/O delays
Export I/O delays seen by a task through /proc/<tgid>/stats for use in top
etc.
Note that delays for I/O done for swapping in pages (swapin I/O) is clubbed
together with all other I/O here (this is not the case in the netlink
interface where the swapin I/O is kept distinct)
[akpm@osdl.org: printk warning fix]
Signed-off-by: Shailabh Nagar <nagar@watson.ibm.com>
Signed-off-by: Balbir Singh <balbir@in.ibm.com>
Cc: Jes Sorensen <jes@sgi.com>
Cc: Peter Chubb <peterc@gelato.unsw.edu.au>
Cc: Erich Focht <efocht@ess.nec.de>
Cc: Levent Serinol <lserinol@gmail.com>
Cc: Jay Lan <jlan@engr.sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/delayacct.h')
| -rw-r--r-- | include/linux/delayacct.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/delayacct.h b/include/linux/delayacct.h index d955078a144..7e8b6011b8f 100644 --- a/include/linux/delayacct.h +++ b/include/linux/delayacct.h @@ -37,6 +37,7 @@ extern void __delayacct_tsk_exit(struct task_struct *); extern void __delayacct_blkio_start(void); 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 void delayacct_set_flag(int flag) { @@ -86,6 +87,13 @@ static inline int delayacct_add_tsk(struct taskstats *d, return __delayacct_add_tsk(d, tsk); } +static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk) +{ + if (tsk->delays) + return __delayacct_blkio_ticks(tsk); + return 0; +} + #else static inline void delayacct_set_flag(int flag) {} @@ -104,6 +112,8 @@ static inline void delayacct_blkio_end(void) static inline int delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk) { return 0; } +static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk) +{ return 0; } #endif /* CONFIG_TASK_DELAY_ACCT */ #endif |