usr/src/lib/libc/port/sys/psetsys.c

   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 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #include "lint.h"
  28 #include <sys/types.h>
  29 #include <sys/procset.h>
  30 #include <sys/processor.h>
  31 #include <sys/pset.h>
  32 #include <sys/param.h>
  33 #include <sys/loadavg.h>
  34
  35 int _pset(int, ...);
  36
  37 /* subcode wrappers for _pset system call */
  38
  39 int
  40 pset_create(psetid_t *npset)
  41 {
  42         return (_pset(PSET_CREATE, npset));
  43 }
  44
  45 int
  46 pset_destroy(psetid_t pset)
  47 {
  48         return (_pset(PSET_DESTROY, pset));
  49 }
  50
  51 int
  52 pset_assign(psetid_t pset, processorid_t cpu, psetid_t *opset)
  53 {
  54         return (_pset(PSET_ASSIGN, pset, cpu, opset));
  55 }
  56
  57 int
  58 pset_assign_forced(psetid_t pset, processorid_t cpu, psetid_t *opset)
  59 {
  60         return (_pset(PSET_ASSIGN_FORCED, pset, cpu, opset));
  61 }
  62
  63 int
  64 pset_info(psetid_t pset, int *type, uint_t *numcpus, processorid_t *cpulist)
  65 {
  66         return (_pset(PSET_INFO, pset, type, numcpus, cpulist));
  67 }
  68
  69 int
  70 pset_bind(psetid_t pset, idtype_t idtype, id_t id, psetid_t *opset)
  71 {
  72         return (_pset(PSET_BIND, pset, idtype, id, opset));
  73 }
  74
  75 int
  76 pset_bind_lwp(psetid_t pset, id_t id, pid_t pid, psetid_t *opset)
  77 {
  78         return (_pset(PSET_BIND_LWP, pset, id, pid, opset));
  79 }
  80
  81 /*
  82  * Get the per-processor-set load average.
  83  */
  84 int
  85 pset_getloadavg(psetid_t pset, double loadavg[], int nelem)
  86 {
  87         int i, buf[LOADAVG_NSTATS];
  88
  89         if (nelem > LOADAVG_NSTATS)
  90                 nelem = LOADAVG_NSTATS;
  91
  92         if (_pset(PSET_GETLOADAVG, pset, buf, nelem) == -1)
  93                 return (-1);
  94
  95         for (i = 0; i < nelem; i++)
  96                 loadavg[i] = (double)buf[i] / FSCALE;
  97
  98         return (nelem);
  99 }
 100
 101 int
 102 pset_list(psetid_t *psetlist, uint_t *numpsets)
 103 {
 104         return (_pset(PSET_LIST, psetlist, numpsets));
 105 }
 106
 107 int
 108 pset_setattr(psetid_t pset, uint_t attr)
 109 {
 110         return (_pset(PSET_SETATTR, pset, attr));
 111 }
 112
 113 int
 114 pset_getattr(psetid_t pset, uint_t *attr)
 115 {
 116         return (_pset(PSET_GETATTR, pset, attr));
 117 }