tools/testing/selftests/vm/run_vmtests

   1 #!/bin/bash
   2 #please run as root
   3
   4 #we need 256M, below is the size in kB
   5 needmem=262144
   6 mnt=./huge
   7 exitcode=0
   8
   9 #get pagesize and freepages from /proc/meminfo
  10 while read name size unit; do
  11         if [ "$name" = "HugePages_Free:" ]; then
  12                 freepgs=$size
  13         fi
  14         if [ "$name" = "Hugepagesize:" ]; then
  15                 pgsize=$size
  16         fi
  17 done < /proc/meminfo
  18
  19 #set proper nr_hugepages
  20 if [ -n "$freepgs" ] && [ -n "$pgsize" ]; then
  21         nr_hugepgs=`cat /proc/sys/vm/nr_hugepages`
  22         needpgs=`expr $needmem / $pgsize`
  23         if [ $freepgs -lt $needpgs ]; then
  24                 lackpgs=$(( $needpgs - $freepgs ))
  25                 echo $(( $lackpgs + $nr_hugepgs )) > /proc/sys/vm/nr_hugepages
  26                 if [ $? -ne 0 ]; then
  27                         echo "Please run this test as root"
  28                         exit 1
  29                 fi
  30         fi
  31 else
  32         echo "no hugetlbfs support in kernel?"
  33         exit 1
  34 fi
  35
  36 mkdir $mnt
  37 mount -t hugetlbfs none $mnt
  38
  39 echo "--------------------"
  40 echo "running hugepage-mmap"
  41 echo "--------------------"
  42 ./hugepage-mmap
  43 if [ $? -ne 0 ]; then
  44         echo "[FAIL]"
  45         exitcode=1
  46 else
  47         echo "[PASS]"
  48 fi
  49
  50 shmmax=`cat /proc/sys/kernel/shmmax`
  51 shmall=`cat /proc/sys/kernel/shmall`
  52 echo 268435456 > /proc/sys/kernel/shmmax
  53 echo 4194304 > /proc/sys/kernel/shmall
  54 echo "--------------------"
  55 echo "running hugepage-shm"
  56 echo "--------------------"
  57 ./hugepage-shm
  58 if [ $? -ne 0 ]; then
  59         echo "[FAIL]"
  60         exitcode=1
  61 else
  62         echo "[PASS]"
  63 fi
  64 echo $shmmax > /proc/sys/kernel/shmmax
  65 echo $shmall > /proc/sys/kernel/shmall
  66
  67 echo "--------------------"
  68 echo "running map_hugetlb"
  69 echo "--------------------"
  70 ./map_hugetlb
  71 if [ $? -ne 0 ]; then
  72         echo "[FAIL]"
  73         exitcode=1
  74 else
  75         echo "[PASS]"
  76 fi
  77
  78 #cleanup
  79 umount $mnt
  80 rm -rf $mnt
  81 echo $nr_hugepgs > /proc/sys/vm/nr_hugepages
  82 exit $exitcode