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--- old/usr/src/uts/common/sys/fx.h
+++ new/usr/src/uts/common/sys/fx.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 24 * Copyright 2015 Joyent, Inc.
25 25 */
26 26
27 27 #ifndef _SYS_FX_H
28 28 #define _SYS_FX_H
29 29
30 30 #include <sys/types.h>
31 31 #include <sys/thread.h>
32 32 #include <sys/ddi.h>
33 33 #include <sys/sunddi.h>
34 34 #include <sys/cpucaps.h>
35 35
36 36 #ifdef __cplusplus
37 37 extern "C" {
38 38 #endif
39 39
40 40 /*
41 41 * Fixed-priority dispatcher parameter table entry
42 42 */
43 43 typedef struct fxdpent {
44 44 pri_t fx_globpri; /* global (class independent) priority */
45 45 int fx_quantum; /* time quantum given to procs at this level */
46 46 } fxdpent_t;
47 47
48 48 #ifdef _KERNEL
49 49
50 50 typedef uintptr_t fx_cookie_t; /* handle for callback supplied storage */
51 51
52 52 /*
53 53 * callbacks supplied by custom scheduler. In general, a change to quantum
54 54 * and/or priority when returning from a callback has immediate effect.
55 55 *
56 56 * fx_exit - called when a thread exits. This also needs to free any storage
57 57 * for the fx_cookie_t.
58 58 *
59 59 * fx_callb_tick - called at every clock tick attributed to this thread
60 60 *
61 61 * fx_callb_preempt - called when a thread is being preempted or yielding
62 62 *
63 63 * fx_callb_stop/fx_callb_sleep - called when a thread stops running
64 64 *
65 65 * fx_callb_wakeup - called when a thread is again runnable
66 66 */
67 67 typedef struct fx_callbacks {
68 68 int fx_callb_version;
69 69 void (*fx_callb_exit)(fx_cookie_t);
70 70 void (*fx_callb_tick)(fx_cookie_t, clock_t *, pri_t *);
71 71 void (*fx_callb_preempt)(fx_cookie_t, clock_t *, pri_t *);
72 72 void (*fx_callb_stop)(fx_cookie_t);
73 73 void (*fx_callb_sleep)(fx_cookie_t);
74 74 void (*fx_callb_wakeup)(fx_cookie_t, clock_t *, pri_t *);
75 75
76 76 } fx_callbacks_t;
77 77
78 78
79 79 #define FX_CALLB_VERSION_1 1
80 80
81 81 #define FX_CALLB_REV FX_CALLB_VERSION_1
82 82
83 83 #define FX_CB_VERSION(cb) cb->fx_callb_version
84 84
85 85 #define FX_CB_EXIT(cb, c) cb->fx_callb_exit(c)
86 86
87 87 #define FX_CB_TICK(cb, c, q, p) cb->fx_callb_tick(c, q, p)
88 88
89 89 #define FX_CB_PREEMPT(cb, c, q, p) cb->fx_callb_preempt(c, q, p)
90 90
91 91 #define FX_CB_STOP(cb, c) cb->fx_callb_stop(c)
92 92
93 93 #define FX_CB_SLEEP(cb, c) cb->fx_callb_sleep(c)
94 94
95 95 #define FX_CB_WAKEUP(cb, c, q, p) cb->fx_callb_wakeup(c, q, p)
96 96
97 97 /* priority setting */
98 98 #define FX_CB_NOCHANGE -32768
99 99
100 100
101 101 /*
102 102 * Fixed-priority class specific thread structure
103 103 */
104 104 typedef struct fxproc {
105 105 int fx_pquantum; /* time quantum given to this proc */
106 106 int fx_timeleft; /* time remaining in procs quantum */
107 107
108 108 pri_t fx_pri; /* relative priority within fx class */
109 109 /* same as user priority */
110 110
111 111 pri_t fx_uprilim; /* user priority limit */
112 112
113 113 char fx_nice; /* nice value for compatibility */
114 114 uchar_t fx_flags; /* flags defined below */
115 115 kthread_t *fx_tp; /* pointer to thread */
116 116
117 117 /* the following are used only when we have callbacks registered */
118 118 kt_did_t fx_ktid;
119 119 struct fxproc *fx_cb_next; /* pointer to next fxproc that */
120 120 /* has a callback */
121 121
122 122 struct fxproc *fx_cb_prev; /* pointer to previous fxproc that */
123 123 /* has a callback */
124 124 fx_cookie_t fx_cookie; /* cookie with which callback */
125 125 /* was registered */
126 126 fx_callbacks_t *fx_callback; /* pointer to callback structure */
127 127 caps_sc_t fx_caps; /* CPU caps specific data */
128 128 } fxproc_t;
129 129
130 130
131 131 #define FX_CALLB(fxpp) fxpp->fx_callback
132 132
133 133
134 134 /* flags */
135 135 #define FXBACKQ 0x02 /* thread goes to back of disp q when preempted */
136 136
137 137 /*
138 138 * Kernel version of fixed-priority class specific parameter structure
139 139 */
140 140 typedef struct fxkparms {
141 141 pri_t fx_upri;
142 142 pri_t fx_uprilim;
143 143 int fx_tqntm;
144 144 uint_t fx_cflags;
145 145 } fxkparms_t;
146 146
147 147 /*
148 148 * control flags (kparms->fx_cflags).
149 149 */
150 150 #define FX_DOUPRILIM 0x01 /* change user priority limit */
151 151 #define FX_DOUPRI 0x02 /* change user priority */
152 152 #define FX_DOTQ 0x04 /* change FX time quantum */
153 153
154 154 #define FXMAXUPRI 60 /* maximum user priority setting */
155 155
156 156 /*
157 157 * Interface for partner private code. This is not a public interface.
158 158 */
159 159 extern int fx_register_callbacks(fx_callbacks_t *, fx_cookie_t, pri_t, clock_t);
160 160 extern int fx_unregister_callbacks();
161 161 extern int fx_modify_priority(kt_did_t, clock_t, pri_t);
162 162 extern void *fx_get_mutex_cookie();
163 163 extern pri_t fx_get_maxpri();
164 164
165 165 #endif /* _KERNEL */
166 166
167 167 #ifdef __cplusplus
168 168 }
169 169 #endif
170 170
171 171 #endif /* _SYS_FX_H */
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