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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: Test creation and deletion of trace instances while setting an event
   4 # requires: instances
   5
   6 fail() { # mesg
   7     rmdir foo 2>/dev/null
   8     echo $1
   9     set -e
  10     exit_fail
  11 }
  12
  13 cd instances
  14
  15 # we don't want to fail on error
  16 set +e
  17
  18 mkdir x
  19 rmdir x
  20 result=$?
  21
  22 if [ $result -ne 0 ]; then
  23     echo "instance rmdir not supported"
  24     exit_unsupported
  25 fi
  26
  27 instance_slam() {
  28         while :; do
  29                 mkdir foo 2> /dev/null
  30                 rmdir foo 2> /dev/null
  31         done
  32 }
  33
  34 instance_read() {
  35         while :; do
  36                 cat foo/trace 1> /dev/null 2>&1
  37         done
  38 }
  39
  40 instance_set() {
  41         while :; do
  42                 echo 1 > foo/events/sched/sched_switch/enable
  43         done 2> /dev/null
  44 }
  45
  46 instance_slam &
  47 p1=$!
  48 echo $p1
  49
  50 instance_set &
  51 p2=$!
  52 echo $p2
  53
  54 instance_read &
  55 p3=$!
  56 echo $p3
  57
  58 sleep 1
  59
  60 kill -1 $p3
  61 kill -1 $p2
  62 kill -1 $p1
  63
  64 echo "Wait for processes to finish"
  65 wait $p1 $p2 $p3
  66 echo "all processes finished, wait for cleanup"
  67 sleep 1
  68
  69 mkdir foo
  70 ls foo > /dev/null
  71 rmdir foo
  72 if [ -d foo ]; then
  73         fail "foo still exists"
  74 fi
  75
  76 mkdir foo
  77 echo "schedule:enable_event:sched:sched_switch" > foo/set_ftrace_filter
  78 rmdir foo
  79 if [ -d foo ]; then
  80         fail "foo still exists"
  81 fi
  82 if grep -q "schedule:enable_event:sched:sched_switch" ../set_ftrace_filter; then
  83         echo "Older kernel detected. Cleanup filter"
  84         echo '!schedule:enable_event:sched:sched_switch' > ../set_ftrace_filter
  85 fi
  86
  87 instance_slam() {
  88     while :; do
  89         mkdir x
  90         mkdir y
  91         mkdir z
  92         rmdir x
  93         rmdir y
  94         rmdir z
  95     done 2>/dev/null
  96 }
  97
  98 instance_slam &
  99 p1=$!
 100 echo $p1
 101
 102 instance_slam &
 103 p2=$!
 104 echo $p2
 105
 106 instance_slam &
 107 p3=$!
 108 echo $p3
 109
 110 instance_slam &
 111 p4=$!
 112 echo $p4
 113
 114 instance_slam &
 115 p5=$!
 116 echo $p5
 117
 118 ls -lR >/dev/null
 119 sleep 1
 120
 121 kill -1 $p1
 122 kill -1 $p2
 123 kill -1 $p3
 124 kill -1 $p4
 125 kill -1 $p5
 126
 127 echo "Wait for processes to finish"
 128 wait $p1 $p2 $p3 $p4 $p5
 129 echo "all processes finished, wait for cleanup"
 130
 131 mkdir x y z
 132 ls x y z
 133 rmdir x y z
 134 for d in x y z; do
 135         if [ -d $d ]; then
 136                 fail "instance $d still exists"
 137         fi
 138 done
 139
 140 set -e
 141
 142 exit 0