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1.1 root 1: /*
2: ** Share scheduling parameters
3: */
4:
5: struct sh_consts
6: {
7: /** Parameters **/
8:
9: u_short sc_fl; /* Scheduling flags */
10: u_short sc_delta; /* Run rate for scheduler in secs. */
11: u_short sc_maxusers; /* Max. number of active users */
12: u_short sc_maxgroups; /* Max. group nesting */
1.1.1.2 ! root 13: float sc_ratedecay; /* Decay rate for ``kl_rate'' */
1.1 root 14: float sc_maxpri; /* Max. absolute priority */
15: float sc_maxupri; /* Max. priority for a normal process */
16: float sc_maxusage; /* Max. usage considered */
1.1.1.2 ! root 17: float sc_decay; /* Decay rate for ``l_usage'' */
1.1 root 18: u_long sc_pridecbase; /* Base for decay for ``p_sharepri'' */
19: u_long sc_syscall; /* Cost of system call */
20: u_long sc_bio; /* " " logical block i/o */
21: u_long sc_tio; /* " " stream i/o */
22: u_long sc_tick; /* " " cpu tick */
23: u_long sc_click; /* " " memory tick */
1.1.1.2 ! root 24: float sc_pridecay; /* Decay rate for max nice ``p_sharepri'' */
1.1 root 25: float sc_maxushare; /* Factor for max effective user share */
26: float sc_mingshare; /* Factor for min effective group share */
27: u_long sc_sparep[1]; /* <spare> */
28:
29: /** Feedback **/
30:
31: float sc_totusage; /* E{1/kl.l_usage} */
32: float sc_sparef0; /* <spare> */
33: u_short sc_users; /* Number of active users */
34: u_short sc_groups; /* Number of active groups */
35: float sc_highshpri; /* High value of p_sharepri */
36: float sc_maxcusage; /* Max. current usage */
37: u_long sc_syscallc; /* Total counts of system calls */
38: u_long sc_bioc; /* " " " logical block i/o */
39: u_long sc_tioc; /* " " " stream i/o */
40: u_long sc_tickc; /* " " " cpu ticks */
41: u_long sc_clickc; /* " " " memory ticks */
42: u_long sc_sparef[4]; /* <spare> */
43: };
44:
45: extern struct sh_consts shconsts;
46:
1.1.1.2 ! root 47: #define DecayRate shconsts.sc_ratedecay
1.1 root 48: #define DecayUsage shconsts.sc_decay
49: #define Delta shconsts.sc_delta
50: #define Groups shconsts.sc_groups
51: #define LASTPARAM shconsts.sc_sparep[0]
52: #define MAXGROUPS shconsts.sc_maxgroups
53: #define MAXPRI shconsts.sc_maxpri
54: #define MaxSharePri shconsts.sc_highshpri
55: #define MAXUPRI shconsts.sc_maxupri
56: #define MaxUsage shconsts.sc_maxcusage
57: #define MAXUSAGE shconsts.sc_maxusage
58: #define MAXUSERS shconsts.sc_maxusers
59: #define MAXUSHARE shconsts.sc_maxushare
60: #define MINGSHARE shconsts.sc_mingshare
61: #define PriDecay shconsts.sc_pridecay
62: #define PriDecayBase shconsts.sc_pridecbase
63: #define Shareflags shconsts.sc_fl
64: #define TotUsage shconsts.sc_totusage
65: #define Users shconsts.sc_users
66:
67: /*
68: ** Share scheduling flags
69: */
70:
71: #define NOSHARE 01 /* Don't run scheduler at all */
72: #define ADJGROUPS 02 /* Adjust group usages */
73: #define LIMSHARE 04 /* Limit maximum share */
74:
75: #ifdef KERNEL
76: /*
77: ** Request software interrupt to run scheduler
78: */
79:
80: #ifdef vax
81: #define setshsched() mtpr(SIRR, 0x1)
82: #define splshsched() splx(0x1)
83: #endif
84: #ifdef sun
85: #define setshsched() softcall(share, (caddr_t)0);
86: #define splshsched() spl1()
87: #endif
88:
89: /*
90: ** Array of costs for a cpu tick biased by p_nice values.
91: */
92:
93: extern long NiceTicks[];
94:
95: /*
1.1.1.2 ! root 96: ** Table for pre-calculated priority decays.
1.1 root 97: */
98:
99: extern float NiceDecays[];
1.1.1.2 ! root 100:
! 101: /*
! 102: ** Table for pre-calculated rate increments.
! 103: */
! 104:
! 105: extern float NiceRates[];
1.1 root 106: #endif KERNEL
107:
108: #define _SHARE_ 1
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