1 /* 2 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Joerg Sonnenberger <joerg@bec.de>. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/lib/libkcore/kcore_sched.c,v 1.1 2004/12/22 11:01:49 joerg Exp $ 35 */ 36 37 #include <sys/param.h> 38 39 #include <err.h> 40 #include <errno.h> 41 #include <kcore.h> 42 #include <kvm.h> 43 #include <nlist.h> 44 45 #include "kcore_private.h" 46 47 int 48 kcore_get_cpus(struct kcore_data *kc, int *ncpus) 49 { 50 static struct nlist nl[] = { 51 { "_ncpus", 0, 0, 0, 0}, 52 { NULL, 0, 0, 0, 0} 53 }; 54 55 /* XXX always include ncpus in the kernel. */ 56 if (kcore_get_generic(kc, nl, ncpus, sizeof(*ncpus))) 57 *ncpus = 1; 58 return(0); 59 } 60 61 int 62 kcore_get_sched_ccpu(struct kcore_data *kc, int *ccpu) 63 { 64 static struct nlist nl[] = { 65 { "_tk_nin", 0, 0, 0, 0}, 66 { NULL, 0, 0, 0, 0} 67 }; 68 69 return(kcore_get_generic(kc, nl, ccpu, sizeof(*ccpu))); 70 } 71 72 int 73 kcore_get_sched_cputime(struct kcore_data *kc, struct kinfo_cputime *cputime) 74 { 75 static struct nlist nl[] = { 76 { "_cp_time", 0, 0, 0, 0}, 77 { NULL, 0, 0, 0, 0} 78 }; 79 80 return(kcore_get_generic(kc, nl, cputime, sizeof(*cputime))); 81 } 82 83 int 84 kcore_get_sched_hz(struct kcore_data *kc, int *hz) 85 { 86 static struct nlist nl[] = { 87 { "_hz", 0, 0, 0, 0}, 88 { NULL, 0, 0, 0, 0} 89 }; 90 91 return(kcore_get_generic(kc, nl, hz, sizeof(*hz))); 92 } 93 94 int 95 kcore_get_sched_profhz(struct kcore_data *kc, int *profhz) 96 { 97 static struct nlist nl[] = { 98 { "_profhz", 0, 0, 0, 0}, 99 { NULL, 0, 0, 0, 0} 100 }; 101 102 return(kcore_get_generic(kc, nl, profhz, sizeof(*profhz))); 103 } 104 105 int 106 kcore_get_sched_stathz(struct kcore_data *kc, int *stathz) 107 { 108 static struct nlist nl[] = { 109 { "_stathz", 0, 0, 0, 0}, 110 { NULL, 0, 0, 0, 0} 111 }; 112 int retval; 113 114 retval = kcore_get_generic(kc, nl, stathz, sizeof(*stathz));; 115 if (retval == 0 && *stathz == 0) 116 return(kcore_get_sched_hz(kc, stathz)); 117 return(retval); 118 } 119