diff options
| author |   Dhaval Giani <dhaval@linux.vnet.ibm.com> | 2007-10-15 17:00:14 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2007-10-15 17:00:14 +0200 |
| commit | 5cb350baf580017da38199625b7365b1763d7180 (patch) | |
| tree | 3830339798b1c6f19f1580700ea6ba240fb56ef2 /include/linux/sched.h | |
| parent | sched: disable sleeper_fairness on SCHED_BATCH (diff) | |
| download | linux-dev-5cb350baf580017da38199625b7365b1763d7180.tar.xz linux-dev-5cb350baf580017da38199625b7365b1763d7180.zip | |
sched: group scheduling, sysfs tunables
Add tunables in sysfs to modify a user's cpu share.
A directory is created in sysfs for each new user in the system.
/sys/kernel/uids/<uid>/cpu_share
Reading this file returns the cpu shares granted for the user.
Writing into this file modifies the cpu share for the user. Only an
administrator is allowed to modify a user's cpu share.
Ex:
# cd /sys/kernel/uids/
# cat 512/cpu_share
1024
# echo 2048 > 512/cpu_share
# cat 512/cpu_share
2048
#
Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/sched.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 3cddbfc0c91d..04233c8974d9 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -87,6 +87,7 @@ struct sched_param { #include <linux/timer.h> #include <linux/hrtimer.h> #include <linux/task_io_accounting.h> +#include <linux/kobject.h> #include <asm/processor.h> @@ -599,9 +600,18 @@ struct user_struct { #ifdef CONFIG_FAIR_USER_SCHED struct task_group *tg; + struct kset kset; + struct subsys_attribute user_attr; + struct work_struct work; #endif }; +#ifdef CONFIG_FAIR_USER_SCHED +extern int uids_kobject_init(void); +#else +static inline int uids_kobject_init(void) { return 0; } +#endif + extern struct user_struct *find_user(uid_t); extern struct user_struct root_user; @@ -1848,6 +1858,7 @@ extern struct task_group *sched_create_group(void); extern void sched_destroy_group(struct task_group *tg); extern void sched_move_task(struct task_struct *tsk); extern int sched_group_set_shares(struct task_group *tg, unsigned long shares); +extern unsigned long sched_group_shares(struct task_group *tg); #endif |