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sched: cfs, core data types 

add the CFS data types to sched.h.

(the old scheduler is still fully intact.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2007-07-09 18:51:58 +02:00
parent fa72e9e484
commit 20b8a59f24
1 changed files with 82 additions and 0 deletions
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82
include/linux/sched.h
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@ -820,6 +820,86 @@ enum sleep_type {
};
struct prio_array;
struct rq;
struct sched_domain;
struct sched_class {
struct sched_class *next;
void (*enqueue_task) (struct rq *rq, struct task_struct *p,
int wakeup, u64 now);
void (*dequeue_task) (struct rq *rq, struct task_struct *p,
int sleep, u64 now);
void (*yield_task) (struct rq *rq, struct task_struct *p);
void (*check_preempt_curr) (struct rq *rq, struct task_struct *p);
struct task_struct * (*pick_next_task) (struct rq *rq, u64 now);
void (*put_prev_task) (struct rq *rq, struct task_struct *p, u64 now);
int (*load_balance) (struct rq *this_rq, int this_cpu,
struct rq *busiest,
unsigned long max_nr_move, unsigned long max_load_move,
struct sched_domain *sd, enum cpu_idle_type idle,
int *all_pinned, unsigned long *total_load_moved);
void (*set_curr_task) (struct rq *rq);
void (*task_tick) (struct rq *rq, struct task_struct *p);
void (*task_new) (struct rq *rq, struct task_struct *p);
};
struct load_weight {
unsigned long weight, inv_weight;
};
/*
* CFS stats for a schedulable entity (task, task-group etc)
*
* Current field usage histogram:
*
* 4 se->block_start
* 4 se->run_node
* 4 se->sleep_start
* 4 se->sleep_start_fair
* 6 se->load.weight
* 7 se->delta_fair
* 15 se->wait_runtime
*/
struct sched_entity {
long wait_runtime;
unsigned long delta_fair_run;
unsigned long delta_fair_sleep;
unsigned long delta_exec;
s64 fair_key;
struct load_weight load; /* for load-balancing */
struct rb_node run_node;
unsigned int on_rq;
u64 wait_start_fair;
u64 wait_start;
u64 exec_start;
u64 sleep_start;
u64 sleep_start_fair;
u64 block_start;
u64 sleep_max;
u64 block_max;
u64 exec_max;
u64 wait_max;
u64 last_ran;
u64 sum_exec_runtime;
s64 sum_wait_runtime;
s64 sum_sleep_runtime;
unsigned long wait_runtime_overruns;
unsigned long wait_runtime_underruns;
#ifdef CONFIG_FAIR_GROUP_SCHED
struct sched_entity *parent;
/* rq on which this entity is (to be) queued: */
struct cfs_rq *cfs_rq;
/* rq "owned" by this entity/group: */
struct cfs_rq *my_q;
#endif
};
struct task_struct {
volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
@ -839,6 +919,8 @@ struct task_struct {
int prio, static_prio, normal_prio;
struct list_head run_list;
struct prio_array *array;
struct sched_class *sched_class;
struct sched_entity se;
unsigned short ioprio;
#ifdef CONFIG_BLK_DEV_IO_TRACE