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 2008 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 #include <sys/types.h> 30 #include <sys/processor.h> 31 #include <sys/cpuvar.h> 32 #include <sys/disp.h> 33 #include <sys/pset.h> 34 #include <sys/lgrp.h> 35 #include <sys/lgrp_user.h> 36 #include <sys/pg.h> 37 #include <sys/bitset.h> 38 #include <sys/time.h> 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 #ifdef _KERNEL 45 46 typedef int cpupartid_t; 47 48 /* 49 * Special partition id. 50 */ 51 #define CP_DEFAULT 0 52 53 /* 54 * Flags for cpupart_list() 55 */ 56 #define CP_ALL 0 /* return all cpu partitions */ 57 #define CP_NONEMPTY 1 /* return only non-empty ones */ 58 59 typedef struct cpupart { 60 disp_t cp_kp_queue; /* partition-wide kpreempt queue */ 61 cpupartid_t cp_id; /* partition ID */ 62 int cp_ncpus; /* number of online processors */ 63 struct cpupart *cp_next; /* next partition in list */ 64 struct cpupart *cp_prev; /* previous partition in list */ 65 struct cpu *cp_cpulist; /* processor list */ 66 struct kstat *cp_kstat; /* per-partition statistics */ 67 68 /* 69 * cp_nrunnable and cp_nrunning are used to calculate load average. 70 */ 71 uint_t cp_nrunnable; /* current # of runnable threads */ 72 uint_t cp_nrunning; /* current # of running threads */ 73 74 /* 75 * cp_updates, cp_nrunnable_cum, cp_nwaiting_cum, and cp_hp_avenrun 76 * are used to generate kstat information on an as-needed basis. 77 */ 78 uint64_t cp_updates; /* number of statistics updates */ 79 uint64_t cp_nrunnable_cum; /* cum. # of runnable threads */ 80 uint64_t cp_nwaiting_cum; /* cum. # of waiting threads */ 81 82 struct loadavg_s cp_loadavg; /* cpupart loadavg */ 83 84 klgrpset_t cp_lgrpset; /* set of lgroups on which this */ 85 /* partition has cpus */ 86 lpl_t *cp_lgrploads; /* table of load averages for this */ 87 /* partition, indexed by lgrp ID */ 88 int cp_nlgrploads; /* size of cp_lgrploads table */ 89 uint64_t cp_hp_avenrun[3]; /* high-precision load average */ 90 uint_t cp_attr; /* bitmask of attributes */ 91 lgrp_gen_t cp_gen; /* generation number */ 92 lgrp_id_t cp_lgrp_hint; /* last home lgroup chosen */ 93 bitset_t cp_cmt_pgs; /* CMT PGs represented */ 94 bitset_t cp_haltset; /* halted CPUs */ 95 } cpupart_t; 96 97 typedef struct cpupart_kstat { 98 kstat_named_t cpk_updates; /* number of updates */ 99 kstat_named_t cpk_runnable; /* cum # of runnable threads */ 100 kstat_named_t cpk_waiting; /* cum # waiting for I/O */ 101 kstat_named_t cpk_ncpus; /* current # of CPUs */ 102 kstat_named_t cpk_avenrun_1min; /* 1-minute load average */ 103 kstat_named_t cpk_avenrun_5min; /* 5-minute load average */ 104 kstat_named_t cpk_avenrun_15min; /* 15-minute load average */ 105 } cpupart_kstat_t; 106 107 /* 108 * Macro to obtain the maximum run priority for the global queue associated 109 * with given cpu partition. 110 */ 111 #define CP_MAXRUNPRI(cp) ((cp)->cp_kp_queue.disp_maxrunpri) 112 113 /* 114 * This macro is used to determine if the given thread must surrender 115 * CPU to higher priority runnable threads on one of its dispatch queues. 116 * This should really be defined in <sys/disp.h> but it is not because 117 * including <sys/cpupart.h> there would cause recursive includes. 118 */ 119 #define DISP_MUST_SURRENDER(t) \ 120 ((DISP_MAXRUNPRI(t) > DISP_PRIO(t)) || \ 121 (CP_MAXRUNPRI(t->t_cpupart) > DISP_PRIO(t))) 122 123 extern cpupart_t cp_default; 124 extern cpupart_t *cp_list_head; 125 extern uint_t cp_numparts; 126 extern uint_t cp_numparts_nonempty; 127 128 extern void cpupart_initialize_default(); 129 extern cpupart_t *cpupart_find(psetid_t); 130 extern int cpupart_create(psetid_t *); 131 extern int cpupart_destroy(psetid_t); 132 extern psetid_t cpupart_query_cpu(cpu_t *); 133 extern int cpupart_attach_cpu(psetid_t, cpu_t *, int); 134 extern int cpupart_get_cpus(psetid_t *, processorid_t *, uint_t *); 135 extern int cpupart_bind_thread(kthread_id_t, psetid_t, int, void *, 136 void *); 137 extern void cpupart_kpqalloc(pri_t); 138 extern int cpupart_get_loadavg(psetid_t, int *, int); 139 extern uint_t cpupart_list(psetid_t *, uint_t, int); 140 extern int cpupart_setattr(psetid_t, uint_t); 141 extern int cpupart_getattr(psetid_t, uint_t *); 142 143 #endif /* _KERNEL */ 144 145 #ifdef __cplusplus 146 } 147 #endif 148 149 #endif /* _SYS_CPUPART_H */ 150