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