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 (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 #ifndef _SYS_CPUPART_H 26 #define _SYS_CPUPART_H 27 28 #include <sys/types.h> 29 #include <sys/processor.h> 30 #include <sys/cpuvar.h> 31 #include <sys/disp.h> 32 #include <sys/pset.h> 33 #include <sys/lgrp.h> 34 #include <sys/lgrp_user.h> 35 #include <sys/pg.h> 36 #include <sys/bitset.h> 37 #include <sys/time.h> 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 #ifdef _KERNEL 44 45 typedef int cpupartid_t; 46 47 /* 48 * Special partition id. 49 */ 50 #define CP_DEFAULT 0 51 52 /* 53 * Flags for cpupart_list() 54 */ 55 #define CP_ALL 0 /* return all cpu partitions */ 56 #define CP_NONEMPTY 1 /* return only non-empty ones */ 57 58 typedef struct cpupart { 59 disp_t cp_kp_queue; /* partition-wide kpreempt queue */ 60 cpupartid_t cp_id; /* partition ID */ 61 int cp_ncpus; /* number of online processors */ 62 struct cpupart *cp_next; /* next partition in list */ 63 struct cpupart *cp_prev; /* previous partition in list */ 64 struct cpu *cp_cpulist; /* processor list */ 65 struct kstat *cp_kstat; /* per-partition statistics */ 66 67 /* 68 * cp_nrunnable and cp_nrunning are used to calculate load average. 69 */ 70 uint_t cp_nrunnable; /* current # of runnable threads */ 71 uint_t cp_nrunning; /* current # of running threads */ 72 73 /* 74 * cp_updates, cp_nrunnable_cum, cp_nwaiting_cum, and cp_hp_avenrun 75 * are used to generate kstat information on an as-needed basis. 76 */ 77 uint64_t cp_updates; /* number of statistics updates */ 78 uint64_t cp_nrunnable_cum; /* cum. # of runnable threads */ 79 uint64_t cp_nwaiting_cum; /* cum. # of waiting threads */ 80 81 struct loadavg_s cp_loadavg; /* cpupart loadavg */ 82 83 klgrpset_t cp_lgrpset; /* set of lgroups on which this */ 84 /* partition has cpus */ 85 lpl_t *cp_lgrploads; /* table of load averages for this */ 86 /* partition, indexed by lgrp ID */ 87 int cp_nlgrploads; /* size of cp_lgrploads table */ 88 uint64_t cp_hp_avenrun[3]; /* high-precision load average */ 89 uint_t cp_attr; /* bitmask of attributes */ 90 lgrp_gen_t cp_gen; /* generation number */ 91 lgrp_id_t cp_lgrp_hint; /* last home lgroup chosen */ 92 bitset_t cp_cmt_pgs; /* CMT PGs represented */ 93 bitset_t cp_haltset; /* halted CPUs */ 94 } cpupart_t; 95 96 typedef struct cpupart_kstat { 97 kstat_named_t cpk_updates; /* number of updates */ 98 kstat_named_t cpk_runnable; /* cum # of runnable threads */ 99 kstat_named_t cpk_waiting; /* cum # waiting for I/O */ 100 kstat_named_t cpk_ncpus; /* current # of CPUs */ 101 kstat_named_t cpk_avenrun_1min; /* 1-minute load average */ 102 kstat_named_t cpk_avenrun_5min; /* 5-minute load average */ 103 kstat_named_t cpk_avenrun_15min; /* 15-minute load average */ 104 } cpupart_kstat_t; 105 106 /* 107 * Macro to obtain the maximum run priority for the global queue associated 108 * with given cpu partition. 109 */ 110 #define CP_MAXRUNPRI(cp) ((cp)->cp_kp_queue.disp_maxrunpri) 111 112 /* 113 * This macro is used to determine if the given thread must surrender 114 * CPU to higher priority runnable threads on one of its dispatch queues. 115 * This should really be defined in <sys/disp.h> but it is not because 116 * including <sys/cpupart.h> there would cause recursive includes. 117 */ 118 #define DISP_MUST_SURRENDER(t) \ 119 ((DISP_MAXRUNPRI(t) > DISP_PRIO(t)) || \ 120 (CP_MAXRUNPRI(t->t_cpupart) > DISP_PRIO(t))) 121 122 extern cpupart_t cp_default; 123 extern cpupart_t *cp_list_head; 124 extern uint_t cp_numparts; 125 extern uint_t cp_numparts_nonempty; 126 127 /* 128 * Each partition contains a bitset that indicates which CPUs are halted and 129 * which ones are running. Given the growing number of CPUs in current and 130 * future platforms, it's important to fanout each CPU within its partition's 131 * haltset to prevent contention due to false sharing. The fanout factor 132 * is platform specific, and declared accordingly. 133 */ 134 extern uint_t cp_haltset_fanout; 135 136 extern void cpupart_initialize_default(); 137 extern cpupart_t *cpupart_find(psetid_t); 138 extern int cpupart_create(psetid_t *); 139 extern int cpupart_destroy(psetid_t); 140 extern psetid_t cpupart_query_cpu(cpu_t *); 141 extern int cpupart_attach_cpu(psetid_t, cpu_t *, int); 142 extern int cpupart_get_cpus(psetid_t *, processorid_t *, uint_t *); 143 extern int cpupart_bind_thread(kthread_id_t, psetid_t, int, void *, 144 void *); 145 extern void cpupart_kpqalloc(pri_t); 146 extern int cpupart_get_loadavg(psetid_t, int *, int); 147 extern uint_t cpupart_list(psetid_t *, uint_t, int); 148 extern int cpupart_setattr(psetid_t, uint_t); 149 extern int cpupart_getattr(psetid_t, uint_t *); 150 151 #endif /* _KERNEL */ 152 153 #ifdef __cplusplus 154 } 155 #endif 156 157 #endif /* _SYS_CPUPART_H */ 158
Indexes created Sat Feb 28 05:31:39 UTC 2026