4 * Userland scheduler API
6 * $DragonFly: src/sys/sys/usched.h,v 1.15 2008/04/21 15:24:47 dillon Exp $
10 #define _SYS_USCHED_H_
12 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
15 #include <sys/types.h>
18 #include <sys/queue.h>
20 #ifndef _SYS_SYSTIMER_H_
21 #include <sys/systimer.h>
24 #define NAME_LENGTH 32
31 TAILQ_ENTRY(usched) entry;
34 void (*usched_register)(void);
35 void (*usched_unregister)(void);
36 void (*acquire_curproc)(struct lwp *);
37 void (*release_curproc)(struct lwp *);
38 void (*setrunqueue)(struct lwp *);
39 void (*schedulerclock)(struct lwp *, sysclock_t, sysclock_t);
40 void (*recalculate)(struct lwp *);
41 void (*resetpriority)(struct lwp *);
42 void (*heuristic_forking)(struct lwp *, struct lwp *);
43 void (*heuristic_exiting)(struct lwp *, struct proc *);
44 void (*setcpumask)(struct usched *, cpumask_t);
45 void (*yield)(struct lwp *);
53 short priority; /* lower is better */
54 char unused01; /* (currently not used) */
56 int batch; /* batch mode heuristic */
57 int estcpu; /* dynamic priority modification */
58 u_short rqtype; /* protected copy of rtprio type */
62 int pad[4]; /* PAD for future expansion */
66 * Flags for usched_ctl()
68 #define USCH_ADD 0x00000001
69 #define USCH_REM 0x00000010
71 #endif /* _KERNEL || _KERNEL_STRUCTURES */
73 #define USCHED_SET_SCHEDULER 0
74 #define USCHED_SET_CPU 1
75 #define USCHED_ADD_CPU 2
76 #define USCHED_DEL_CPU 3
77 #define USCHED_GET_CPU 4
80 * Kernel variables and procedures, or user system calls.
84 extern struct usched usched_bsd4;
85 extern struct usched usched_dummy;
86 extern cpumask_t usched_mastermask;
87 extern int sched_ticks; /* From sys/kern/kern_clock.c */
89 int usched_ctl(struct usched *, int);
90 struct usched *usched_init(void);
94 #if !defined(_KERNEL) || defined(_KERNEL_VIRTUAL)
96 int usched_set(pid_t, int, void *, int);