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 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_CPUCAPS_IMPL_H 28 #define _SYS_CPUCAPS_IMPL_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #ifdef _KERNEL 37 38 #include <sys/kstat.h> 39 #include <sys/cpucaps.h> 40 #include <sys/list.h> 41 #include <sys/time.h> 42 #include <sys/waitq.h> 43 44 /* 45 * When resource control framework sets the cap to NOCAP value the cap 46 * is disabled. 47 */ 48 #define NOCAP MAXCAP 49 50 /* 51 * Maximum value for the cap usage. Should be the maximum value for hrtime_t 52 */ 53 #if defined(_LP64) 54 #define MAX_USAGE LONG_MAX 55 #else 56 #define MAX_USAGE 9223372036854775807LL 57 #endif 58 59 60 /* 61 * Most of the per-project or per-zone state related to CPU caps is kept in the 62 * cpucap_t structure. 63 */ 64 typedef struct cpucap { 65 list_node_t cap_link; /* next/prev capped entity */ 66 struct kproject *cap_project; /* project for the cap */ 67 struct zone *cap_zone; /* zone for the cap */ 68 waitq_t cap_waitq; /* waitq for capped threads */ 69 kstat_t *cap_kstat; /* cpucaps specific kstat */ 70 int64_t cap_lbolt; /* zone cap specific */ 71 hrtime_t cap_value; /* scaled CPU usage cap */ 72 hrtime_t cap_usage; /* current CPU usage */ 73 disp_lock_t cap_usagelock; /* protects cap_usage above */ 74 /* 75 * Per cap statistics. 76 */ 77 hrtime_t cap_maxusage; /* maximum cap usage */ 78 u_longlong_t cap_below; /* # of ticks spend below the cap */ 79 u_longlong_t cap_above; /* # of ticks spend above the cap */ 80 } cpucap_t; 81 82 /* 83 * Wrapper macros for checking cap state. 84 */ 85 #define CAP_ENABLED(cap) ((cap)->cap_value != 0) 86 #define CAP_DISABLED(cap) (!CAP_ENABLED(cap)) 87 88 #define PROJECT_IS_CAPPED(project) \ 89 (((project)->kpj_cpucap != NULL) && \ 90 CAP_ENABLED((project)->kpj_cpucap)) 91 92 #define ZONE_IS_CAPPED(zone) \ 93 (((zone)->zone_cpucap != NULL) && \ 94 CAP_ENABLED((zone)->zone_cpucap)) 95 96 #endif /* _KERNEL */ 97 98 #ifdef __cplusplus 99 } 100 #endif 101 102 #endif /* _SYS_CPUCAPS_IMPL_H */ 103