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 _CMT_H 27 #define _CMT_H 28 29 /* 30 * CMT PG class 31 */ 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 #if (defined(_KERNEL) || defined(_KMEMUSER)) 38 #include <sys/group.h> 39 #include <sys/pghw.h> 40 #include <sys/types.h> 41 42 /* 43 * CMT pg structure 44 */ 45 typedef struct pg_cmt { 46 struct pghw cmt_pg; /* physical grouping */ 47 struct group *cmt_siblings; /* CMT PGs to balance with */ 48 struct pg_cmt *cmt_parent; /* Parent CMT PG */ 49 struct group *cmt_children; /* Active children CMT PGs */ 50 int cmt_nchildren; /* # of children CMT PGs */ 51 uint32_t cmt_nrunning; /* # of running threads */ 52 struct group cmt_cpus_actv; 53 struct bitset cmt_cpus_actv_set; /* bitset of active CPUs */ 54 } pg_cmt_t; 55 56 /* 57 * Change the number of running threads on the pg 58 */ 59 #define PG_NRUN_UPDATE(cp, n) (pg_cmt_load((cp), (n))) 60 61 void pg_cmt_load(cpu_t *, int); 62 void pg_cmt_cpu_startup(cpu_t *); 63 int pg_cmt_can_migrate(cpu_t *, cpu_t *); 64 65 int pg_plat_cmt_load_bal_hw(pghw_type_t); 66 int pg_plat_cmt_affinity_hw(pghw_type_t); 67 68 cpu_t *cmt_balance(kthread_t *, cpu_t *); 69 70 #endif /* !_KERNEL && !_KMEMUSER */ 71 72 #ifdef __cplusplus 73 } 74 #endif 75 76 #endif /* _CMT_H */ 77