granicus.if.org Git - strace/blob - numa.c

   1 /*
   2  * Copyright (c) 2003-2007 Ulrich Drepper <drepper@redhat.com>
   3  * Copyright (c) 2005-2016 Dmitry V. Levin <ldv@altlinux.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include "defs.h"
  30
  31 static void
  32 print_nodemask(struct tcb *tcp, unsigned long addr, unsigned long maxnodes)
  33 {
  34         const unsigned long nlongs =
  35                 (maxnodes + 8 * current_wordsize - 2) / (8 * current_wordsize);
  36         const unsigned long size = nlongs * current_wordsize;
  37         const unsigned long end = addr + size;
  38
  39         if (!verbose(tcp) || (exiting(tcp) && syserror(tcp))
  40             || end <= addr || size / current_wordsize != nlongs
  41             || nlongs < maxnodes / (8 * current_wordsize)) {
  42                 printaddr(addr);
  43                 return;
  44         }
  45
  46         const unsigned long abbrev_end =
  47                 (abbrev(tcp) && max_strlen < nlongs) ?
  48                         addr + max_strlen * current_wordsize : end;
  49         unsigned long cur;
  50         for (cur = addr; cur < end; cur += current_wordsize) {
  51                 if (cur != addr)
  52                         tprints(", ");
  53
  54                 unsigned long n;
  55                 if (umove_ulong_or_printaddr(tcp, cur, &n))
  56                         break;
  57
  58                 if (cur == addr)
  59                         tprints("[");
  60
  61                 if (cur >= abbrev_end) {
  62                         tprints("...");
  63                         cur = end;
  64                         break;
  65                 }
  66
  67                 tprintf("%#0*lx", (int) current_wordsize * 2 + 2, n);
  68         }
  69         if (cur != addr)
  70                 tprints("]");
  71 }
  72
  73 SYS_FUNC(migrate_pages)
  74 {
  75         tprintf("%d, %lu, ", (int) tcp->u_arg[0], tcp->u_arg[1]);
  76         print_nodemask(tcp, tcp->u_arg[2], tcp->u_arg[1]);
  77         tprints(", ");
  78         print_nodemask(tcp, tcp->u_arg[3], tcp->u_arg[1]);
  79
  80         return RVAL_DECODED;
  81 }
  82
  83 #include "xlat/policies.h"
  84 #include "xlat/mbindflags.h"
  85
  86 SYS_FUNC(mbind)
  87 {
  88         printaddr(tcp->u_arg[0]);
  89         tprintf(", %lu, ", tcp->u_arg[1]);
  90         printxval(policies, tcp->u_arg[2], "MPOL_???");
  91         tprints(", ");
  92         print_nodemask(tcp, tcp->u_arg[3], tcp->u_arg[4]);
  93         tprintf(", %lu, ", tcp->u_arg[4]);
  94         printflags(mbindflags, tcp->u_arg[5], "MPOL_???");
  95
  96         return RVAL_DECODED;
  97 }
  98
  99 SYS_FUNC(set_mempolicy)
 100 {
 101         printxval(policies, tcp->u_arg[0], "MPOL_???");
 102         tprints(", ");
 103         print_nodemask(tcp, tcp->u_arg[1], tcp->u_arg[2]);
 104         tprintf(", %lu", tcp->u_arg[2]);
 105
 106         return RVAL_DECODED;
 107 }
 108
 109 #include "xlat/mempolicyflags.h"
 110
 111 SYS_FUNC(get_mempolicy)
 112 {
 113         if (exiting(tcp)) {
 114                 int pol;
 115                 if (!umove_or_printaddr(tcp, tcp->u_arg[0], &pol)) {
 116                         tprints("[");
 117                         printxval(policies, pol, "MPOL_???");
 118                         tprints("]");
 119                 }
 120                 tprints(", ");
 121                 print_nodemask(tcp, tcp->u_arg[1], tcp->u_arg[2]);
 122                 tprintf(", %lu, ", tcp->u_arg[2]);
 123                 printaddr(tcp->u_arg[3]);
 124                 tprints(", ");
 125                 printflags(mempolicyflags, tcp->u_arg[4], "MPOL_???");
 126         }
 127         return 0;
 128 }
 129
 130 #include "xlat/move_pages_flags.h"
 131
 132 SYS_FUNC(move_pages)
 133 {
 134         if (entering(tcp)) {
 135                 unsigned long npages = tcp->u_arg[1];
 136                 tprintf("%ld, %lu, ", tcp->u_arg[0], npages);
 137                 if (tcp->u_arg[2] == 0)
 138                         tprints("NULL, ");
 139                 else {
 140                         unsigned int i;
 141                         long puser = tcp->u_arg[2];
 142                         tprints("{");
 143                         for (i = 0; i < npages; ++i) {
 144                                 void *p;
 145                                 if (i > 0)
 146                                         tprints(", ");
 147                                 if (umove(tcp, puser, &p) < 0) {
 148                                         tprints("???");
 149                                         break;
 150                                 }
 151                                 tprintf("%p", p);
 152                                 puser += sizeof(void *);
 153                         }
 154                         tprints("}, ");
 155                 }
 156                 if (tcp->u_arg[3] == 0)
 157                         tprints("NULL, ");
 158                 else {
 159                         unsigned int i;
 160                         long nodeuser = tcp->u_arg[3];
 161                         tprints("{");
 162                         for (i = 0; i < npages; ++i) {
 163                                 int node;
 164                                 if (i > 0)
 165                                         tprints(", ");
 166                                 if (umove(tcp, nodeuser, &node) < 0) {
 167                                         tprints("???");
 168                                         break;
 169                                 }
 170                                 tprintf("%#x", node);
 171                                 nodeuser += sizeof(int);
 172                         }
 173                         tprints("}, ");
 174                 }
 175         } else {
 176                 unsigned long npages = tcp->u_arg[1];
 177                 if (tcp->u_arg[4] == 0)
 178                         tprints("NULL, ");
 179                 else {
 180                         unsigned int i;
 181                         long statususer = tcp->u_arg[4];
 182                         tprints("{");
 183                         for (i = 0; i < npages; ++i) {
 184                                 int status;
 185                                 if (i > 0)
 186                                         tprints(", ");
 187                                 if (umove(tcp, statususer, &status) < 0) {
 188                                         tprints("???");
 189                                         break;
 190                                 }
 191                                 tprintf("%#x", status);
 192                                 statususer += sizeof(int);
 193                         }
 194                         tprints("}, ");
 195                 }
 196                 printflags(move_pages_flags, tcp->u_arg[5], "MPOL_???");
 197         }
 198         return 0;
 199 }