tools/testing/selftests/ftrace/test.d/instances/instance.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: Test creation and deletion of trace instances
   4
   5 if [ ! -d instances ] ; then
   6     echo "no instance directory with this kernel"
   7     exit_unsupported;
   8 fi
   9
  10 fail() { # mesg
  11     rmdir x y z 2>/dev/null
  12     echo $1
  13     set -e
  14     exit_fail
  15 }
  16
  17 cd instances
  18
  19 # we don't want to fail on error
  20 set +e
  21
  22 mkdir x
  23 rmdir x
  24 result=$?
  25
  26 if [ $result -ne 0 ]; then
  27     echo "instance rmdir not supported"
  28     exit_unsupported
  29 fi
  30
  31 instance_slam() {
  32     while :; do
  33         mkdir x
  34         mkdir y
  35         mkdir z
  36         rmdir x
  37         rmdir y
  38         rmdir z
  39     done 2>/dev/null
  40 }
  41
  42 instance_slam &
  43 p1=$!
  44 echo $p1
  45
  46 instance_slam &
  47 p2=$!
  48 echo $p2
  49
  50 instance_slam &
  51 p3=$!
  52 echo $p3
  53
  54 instance_slam &
  55 p4=$!
  56 echo $p4
  57
  58 instance_slam &
  59 p5=$!
  60 echo $p5
  61
  62 ls -lR >/dev/null
  63 sleep 1
  64
  65 kill -1 $p1
  66 kill -1 $p2
  67 kill -1 $p3
  68 kill -1 $p4
  69 kill -1 $p5
  70
  71 echo "Wait for processes to finish"
  72 wait $p1 $p2 $p3 $p4 $p5
  73 echo "all processes finished, wait for cleanup"
  74
  75 mkdir x y z
  76 ls x y z
  77 rmdir x y z
  78 for d in x y z; do
  79         if [ -d $d ]; then
  80                 fail "instance $d still exists"
  81         fi
  82 done
  83
  84 set -e
  85
  86 exit 0