1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_CPUPART_H 27 #define _SYS_CPUPART_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <sys/types.h> 32 #include <sys/processor.h> 33 #include <sys/cpuvar.h> 34 #include <sys/disp.h> 35 #include <sys/pset.h> 36 #include <sys/lgrp.h> 37 #include <sys/lgrp_user.h> 38 #include <sys/pg.h> 39 #include <sys/bitset.h> 40 #include <sys/time.h> 41 42 #ifdef __cplusplus 43 extern "C" { 44 #endif 45 46 #ifdef _KERNEL 47 48 typedef int cpupartid_t; 49 50 /* 51 * Special partition id. 52 */ 53 #define CP_DEFAULT 0 54 55 /* 56 * Flags for cpupart_list() 57 */ 58 #define CP_ALL 0 /* return all cpu partitions */ 59 #define CP_NONEMPTY 1 /* return only non-empty ones */ 60 61 #if defined(_MACHDEP) 62 struct mach_cpupart { 63 cpuset_t mc_haltset; 64 }; 65 66 extern struct mach_cpupart cp_default_mach; 67 #else 68 struct mach_cpupart; 69 #endif 70 71 typedef struct cpupart { 72 disp_t cp_kp_queue; /* partition-wide kpreempt queue */ 73 cpupartid_t cp_id; /* partition ID */ 74 int cp_ncpus; /* number of online processors */ 75 struct cpupart *cp_next; /* next partition in list */ 76 struct cpupart *cp_prev; /* previous partition in list */ 77 struct cpu *cp_cpulist; /* processor list */ 78 struct kstat *cp_kstat; /* per-partition statistics */ 79 80 /* 81 * cp_nrunnable and cp_nrunning are used to calculate load average. 82 */ 83 uint_t cp_nrunnable; /* current # of runnable threads */ 84 uint_t cp_nrunning; /* current # of running threads */ 85 86 /* 87 * cp_updates, cp_nrunnable_cum, cp_nwaiting_cum, and cp_hp_avenrun 88 * are used to generate kstat information on an as-needed basis. 89 */ 90 uint64_t cp_updates; /* number of statistics updates */ 91 uint64_t cp_nrunnable_cum; /* cum. # of runnable threads */ 92 uint64_t cp_nwaiting_cum; /* cum. # of waiting threads */ 93 94 struct loadavg_s cp_loadavg; /* cpupart loadavg */ 95 96 klgrpset_t cp_lgrpset; /* set of lgroups on which this */ 97 /* partition has cpus */ 98 lpl_t *cp_lgrploads; /* table of load averages for this */ 99 /* partition, indexed by lgrp ID */ 100 int cp_nlgrploads; /* size of cp_lgrploads table */ 101 uint64_t cp_hp_avenrun[3]; /* high-precision load average */ 102 uint_t cp_attr; /* bitmask of attributes */ 103 lgrp_gen_t cp_gen; /* generation number */ 104 lgrp_id_t cp_lgrp_hint; /* last home lgroup chosen */ 105 bitset_t cp_cmt_pgs; /* CMT PGs represented */ 106 107 struct mach_cpupart *cp_mach; /* mach-specific */ 108 } cpupart_t; 109 110 typedef struct cpupart_kstat { 111 kstat_named_t cpk_updates; /* number of updates */ 112 kstat_named_t cpk_runnable; /* cum # of runnable threads */ 113 kstat_named_t cpk_waiting; /* cum # waiting for I/O */ 114 kstat_named_t cpk_ncpus; /* current # of CPUs */ 115 kstat_named_t cpk_avenrun_1min; /* 1-minute load average */ 116 kstat_named_t cpk_avenrun_5min; /* 5-minute load average */ 117 kstat_named_t cpk_avenrun_15min; /* 15-minute load average */ 118 } cpupart_kstat_t; 119 120 /* 121 * Macro to obtain the maximum run priority for the global queue associated 122 * with given cpu partition. 123 */ 124 #define CP_MAXRUNPRI(cp) ((cp)->cp_kp_queue.disp_maxrunpri) 125 126 /* 127 * This macro is used to determine if the given thread must surrender 128 * CPU to higher priority runnable threads on one of its dispatch queues. 129 * This should really be defined in <sys/disp.h> but it is not because 130 * including <sys/cpupart.h> there would cause recursive includes. 131 */ 132 #define DISP_MUST_SURRENDER(t) \ 133 ((DISP_MAXRUNPRI(t) > DISP_PRIO(t)) || \ 134 (CP_MAXRUNPRI(t->t_cpupart) > DISP_PRIO(t))) 135 136 extern cpupart_t cp_default; 137 extern cpupart_t *cp_list_head; 138 extern uint_t cp_numparts; 139 extern uint_t cp_numparts_nonempty; 140 141 extern void cpupart_initialize_default(); 142 extern cpupart_t *cpupart_find(psetid_t); 143 extern int cpupart_create(psetid_t *); 144 extern int cpupart_destroy(psetid_t); 145 extern psetid_t cpupart_query_cpu(cpu_t *); 146 extern int cpupart_attach_cpu(psetid_t, cpu_t *, int); 147 extern int cpupart_get_cpus(psetid_t *, processorid_t *, uint_t *); 148 extern int cpupart_bind_thread(kthread_id_t, psetid_t, int, void *, 149 void *); 150 extern void cpupart_kpqalloc(pri_t); 151 extern int cpupart_get_loadavg(psetid_t, int *, int); 152 extern uint_t cpupart_list(psetid_t *, uint_t, int); 153 extern int cpupart_setattr(psetid_t, uint_t); 154 extern int cpupart_getattr(psetid_t, uint_t *); 155 156 #endif /* _KERNEL */ 157 158 #ifdef __cplusplus 159 } 160 #endif 161 162 #endif /* _SYS_CPUPART_H */ 163