4 * Userland scheduler API
10 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
13 #include <sys/types.h>
15 #ifndef _SYS_CPUMASK_H_
16 #include <sys/cpumask.h>
19 #include <sys/queue.h>
21 #ifndef _SYS_SYSTIMER_H_
22 #include <sys/systimer.h>
25 #define NAME_LENGTH 32
32 TAILQ_ENTRY(usched) entry;
35 void (*usched_register)(void);
36 void (*usched_unregister)(void);
37 void (*acquire_curproc)(struct lwp *);
38 void (*release_curproc)(struct lwp *);
39 void (*setrunqueue)(struct lwp *);
40 void (*schedulerclock)(struct lwp *, sysclock_t, sysclock_t);
41 void (*recalculate)(struct lwp *);
42 void (*resetpriority)(struct lwp *);
43 void (*heuristic_forking)(struct lwp *, struct lwp *);
44 void (*heuristic_exiting)(struct lwp *, struct proc *);
45 void (*uload_update)(struct lwp *);
46 void (*setcpumask)(struct usched *, cpumask_t);
47 void (*yield)(struct lwp *);
48 void (*changedcpu)(struct lwp *);
56 short priority; /* lower is better */
57 char unused01; /* (currently not used) */
59 int batch; /* batch mode heuristic */
60 int estcpu; /* dynamic priority modification */
61 u_short rqtype; /* protected copy of rtprio type */
65 short priority; /* lower is better */
66 char forked; /* lock cpu during fork */
68 short estfast; /* fast estcpu collapse mode */
69 short uload; /* for delta uload adjustments */
70 int estcpu; /* dynamic priority modification */
71 u_short rqtype; /* protected copy of rtprio type */
72 u_short qcpu; /* which cpu are we enqueued on? */
73 u_short rrcount; /* reset when moved to runq tail */
79 int pad[6]; /* PAD for future expansion */
83 * Flags for usched_ctl()
85 #define USCH_ADD 0x00000001
86 #define USCH_REM 0x00000010
88 #endif /* _KERNEL || _KERNEL_STRUCTURES */
90 #define USCHED_SET_SCHEDULER 0
91 #define USCHED_SET_CPU 1
92 #define USCHED_ADD_CPU 2
93 #define USCHED_DEL_CPU 3
94 #define USCHED_GET_CPU 4
95 #define USCHED_GET_CPUMASK 5 /* since DragonFly 4.5 */
96 #define USCHED_SET_CPUMASK 6 /* since DragonFly 4.7 */
99 * Kernel variables and procedures, or user system calls.
103 extern struct usched usched_bsd4;
104 extern struct usched usched_dfly;
105 extern struct usched usched_dummy;
106 void dfly_acquire_curproc(struct lwp *);
107 extern cpumask_t usched_mastermask;
108 extern int sched_ticks; /* From sys/kern/kern_clock.c */
110 int usched_ctl(struct usched *, int);
111 struct usched *usched_init(void);
112 void usched_schedulerclock(struct lwp *, sysclock_t, sysclock_t);
116 #if !defined(_KERNEL) || defined(_KERNEL_VIRTUAL)
118 int usched_set(pid_t, int, void *, int);