tools/testing/selftests/ftrace/test.d/dynevent/clear_select_events.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: Generic dynamic event - selective clear (compatibility)
   4
   5 [ -f dynamic_events ] || exit_unsupported
   6
   7 grep -q "place: \[<module>:\]<symbol>" README || exit_unsupported
   8 grep -q "place (kretprobe): \[<module>:\]<symbol>" README || exit_unsupported
   9
  10 grep -q "s:\[synthetic/\]" README || exit_unsupported
  11
  12 [ -f synthetic_events ] || exit_unsupported
  13 [ -f kprobe_events ] || exit_unsupported
  14
  15 echo 0 > events/enable
  16 echo > dynamic_events
  17
  18 PLACE=_do_fork
  19
  20 setup_events() {
  21 echo "p:myevent1 $PLACE" >> dynamic_events
  22 echo "s:latency1 u64 lat; pid_t pid;" >> dynamic_events
  23 echo "r:myevent2 $PLACE" >> dynamic_events
  24 echo "s:latency2 u64 lat; pid_t pid;" >> dynamic_events
  25
  26 grep -q myevent1 dynamic_events
  27 grep -q myevent2 dynamic_events
  28 grep -q latency1 dynamic_events
  29 grep -q latency2 dynamic_events
  30 }
  31
  32 setup_events
  33 echo > synthetic_events
  34
  35 grep -q myevent1 dynamic_events
  36 grep -q myevent2 dynamic_events
  37 ! grep -q latency1 dynamic_events
  38 ! grep -q latency2 dynamic_events
  39
  40 echo > dynamic_events
  41
  42 setup_events
  43 echo > kprobe_events
  44
  45 ! grep -q myevent1 dynamic_events
  46 ! grep -q myevent2 dynamic_events
  47 grep -q latency1 dynamic_events
  48 grep -q latency2 dynamic_events
  49
  50 echo > dynamic_events