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authorShailabh Nagar <nagar@watson.ibm.com>2006-07-14 11:24:41 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-15 08:53:56 +0400
commit6f44993fe1d7b2b097f6ac60cd5835c6f5ca0874 (patch)
tree0f349f4e6c28cc5d11b7083273543a294c437216 /include/linux/delayacct.h
parentc757249af152c59fd74b85e52e8c090acb33d9c0 (diff)
downloadlinux-6f44993fe1d7b2b097f6ac60cd5835c6f5ca0874.tar.xz
[PATCH] per-task-delay-accounting: delay accounting usage of taskstats interface
Usage of taskstats interface by delay accounting. Signed-off-by: Shailabh Nagar <nagar@us.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.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/delayacct.h b/include/linux/delayacct.h
index 0ecbf9aad8e1..d955078a1441 100644
--- a/include/linux/delayacct.h
+++ b/include/linux/delayacct.h
@@ -18,6 +18,7 @@
#define _LINUX_DELAYACCT_H
#include <linux/sched.h>
+#include <linux/taskstats_kern.h>
/*
* Per-task flags relevant to delay accounting
@@ -35,6 +36,7 @@ extern void __delayacct_tsk_init(struct task_struct *);
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 *);
static inline void delayacct_set_flag(int flag)
{
@@ -74,6 +76,16 @@ static inline void delayacct_blkio_end(void)
__delayacct_blkio_end();
}
+static inline int delayacct_add_tsk(struct taskstats *d,
+ struct task_struct *tsk)
+{
+ if (likely(!delayacct_on))
+ return -EINVAL;
+ if (!tsk->delays)
+ return 0;
+ return __delayacct_add_tsk(d, tsk);
+}
+
#else
static inline void delayacct_set_flag(int flag)
{}
@@ -89,6 +101,9 @@ static inline void delayacct_blkio_start(void)
{}
static inline void delayacct_blkio_end(void)
{}
+static inline int delayacct_add_tsk(struct taskstats *d,
+ struct task_struct *tsk)
+{ return 0; }
#endif /* CONFIG_TASK_DELAY_ACCT */
#endif