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 get_nodes(struct tcb *tcp, unsigned long ptr, unsigned long maxnodes, int err)
  33 {
  34         unsigned long nlongs, size, end;
  35
  36         nlongs = (maxnodes + 8 * sizeof(long) - 1) / (8 * sizeof(long));
  37         size = nlongs * sizeof(long);
  38         end = ptr + size;
  39         if (nlongs == 0 || ((err || verbose(tcp)) && (size * 8 == maxnodes)
  40                             && (end > ptr))) {
  41                 unsigned long n, cur, abbrev_end;
  42                 int failed = 0;
  43
  44                 if (abbrev(tcp)) {
  45                         abbrev_end = ptr + max_strlen * sizeof(long);
  46                         if (abbrev_end < ptr)
  47                                 abbrev_end = end;
  48                 } else {
  49                         abbrev_end = end;
  50                 }
  51                 tprints(", {");
  52                 for (cur = ptr; cur < end; cur += sizeof(long)) {
  53                         if (cur > ptr)
  54                                 tprints(", ");
  55                         if (cur >= abbrev_end) {
  56                                 tprints("...");
  57                                 break;
  58                         }
  59                         if (umoven(tcp, cur, sizeof(n), &n) < 0) {
  60                                 tprints("?");
  61                                 failed = 1;
  62                                 break;
  63                         }
  64                         tprintf("%#0*lx", (int) sizeof(long) * 2 + 2, n);
  65                 }
  66                 tprints("}");
  67                 if (failed) {
  68                         tprints(" ");
  69                         printaddr(ptr);
  70                 }
  71         } else {
  72                 tprints(" ");
  73                 printaddr(ptr);
  74         }
  75         tprintf(", %lu", maxnodes);
  76 }
  77
  78 SYS_FUNC(migrate_pages)
  79 {
  80         tprintf("%ld, ", (long) (pid_t) tcp->u_arg[0]);
  81         get_nodes(tcp, tcp->u_arg[2], tcp->u_arg[1], 0);
  82         tprints(", ");
  83         get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[1], 0);
  84
  85         return RVAL_DECODED;
  86 }
  87
  88 #include "xlat/policies.h"
  89 #include "xlat/mbindflags.h"
  90
  91 SYS_FUNC(mbind)
  92 {
  93         printaddr(tcp->u_arg[0]);
  94         tprintf(", %lu, ", tcp->u_arg[1]);
  95         printxval(policies, tcp->u_arg[2], "MPOL_???");
  96         get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[4], 0);
  97         tprints(", ");
  98         printflags(mbindflags, tcp->u_arg[5], "MPOL_???");
  99
 100         return RVAL_DECODED;
 101 }
 102
 103 SYS_FUNC(set_mempolicy)
 104 {
 105         printxval(policies, tcp->u_arg[0], "MPOL_???");
 106         get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], 0);
 107
 108         return RVAL_DECODED;
 109 }
 110
 111 #include "xlat/mempolicyflags.h"
 112
 113 SYS_FUNC(get_mempolicy)
 114 {
 115         if (exiting(tcp)) {
 116                 int pol;
 117                 if (!umove_or_printaddr(tcp, tcp->u_arg[0], &pol))
 118                         printxval(policies, pol, "MPOL_???");
 119                 get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], syserror(tcp));
 120                 tprints(", ");
 121                 printaddr(tcp->u_arg[3]);
 122                 tprints(", ");
 123                 printflags(mempolicyflags, tcp->u_arg[4], "MPOL_???");
 124         }
 125         return 0;
 126 }
 127
 128 #include "xlat/move_pages_flags.h"
 129
 130 SYS_FUNC(move_pages)
 131 {
 132         if (entering(tcp)) {
 133                 unsigned long npages = tcp->u_arg[1];
 134                 tprintf("%ld, %lu, ", tcp->u_arg[0], npages);
 135                 if (tcp->u_arg[2] == 0)
 136                         tprints("NULL, ");
 137                 else {
 138                         unsigned int i;
 139                         long puser = tcp->u_arg[2];
 140                         tprints("{");
 141                         for (i = 0; i < npages; ++i) {
 142                                 void *p;
 143                                 if (i > 0)
 144                                         tprints(", ");
 145                                 if (umove(tcp, puser, &p) < 0) {
 146                                         tprints("???");
 147                                         break;
 148                                 }
 149                                 tprintf("%p", p);
 150                                 puser += sizeof(void *);
 151                         }
 152                         tprints("}, ");
 153                 }
 154                 if (tcp->u_arg[3] == 0)
 155                         tprints("NULL, ");
 156                 else {
 157                         unsigned int i;
 158                         long nodeuser = tcp->u_arg[3];
 159                         tprints("{");
 160                         for (i = 0; i < npages; ++i) {
 161                                 int node;
 162                                 if (i > 0)
 163                                         tprints(", ");
 164                                 if (umove(tcp, nodeuser, &node) < 0) {
 165                                         tprints("???");
 166                                         break;
 167                                 }
 168                                 tprintf("%#x", node);
 169                                 nodeuser += sizeof(int);
 170                         }
 171                         tprints("}, ");
 172                 }
 173         } else {
 174                 unsigned long npages = tcp->u_arg[1];
 175                 if (tcp->u_arg[4] == 0)
 176                         tprints("NULL, ");
 177                 else {
 178                         unsigned int i;
 179                         long statususer = tcp->u_arg[4];
 180                         tprints("{");
 181                         for (i = 0; i < npages; ++i) {
 182                                 int status;
 183                                 if (i > 0)
 184                                         tprints(", ");
 185                                 if (umove(tcp, statususer, &status) < 0) {
 186                                         tprints("???");
 187                                         break;
 188                                 }
 189                                 tprintf("%#x", status);
 190                                 statususer += sizeof(int);
 191                         }
 192                         tprints("}, ");
 193                 }
 194                 printflags(move_pages_flags, tcp->u_arg[5], "MPOL_???");
 195         }
 196         return 0;
 197 }