tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-eprobe.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test inter-event histogram trigger eprobe on synthetic event
   4 # requires: dynamic_events synthetic_events events/syscalls/sys_enter_openat/hist "e[:[<group>/]<event>] <attached-group>.<attached-event> [<args>]":README
   5
   6 echo 0 > events/enable
   7
   8 clear_dynamic_events
   9
  10 SYSTEM="syscalls"
  11 START="sys_enter_openat"
  12 END="sys_exit_openat"
  13 FIELD="filename"
  14 SYNTH="synth_open"
  15 EPROBE="eprobe_open"
  16
  17 echo "$SYNTH u64 filename; s64 ret;" > synthetic_events
  18 echo "hist:keys=common_pid:__arg__1=$FIELD" > events/$SYSTEM/$START/trigger
  19 echo "hist:keys=common_pid:filename=\$__arg__1,ret=ret:onmatch($SYSTEM.$START).trace($SYNTH,\$filename,\$ret)" > events/$SYSTEM/$END/trigger
  20
  21 echo "e:$EPROBE synthetic/$SYNTH file=+0(\$filename):ustring ret=\$ret:s64" >> dynamic_events
  22
  23 grep -q "$SYNTH" dynamic_events
  24 grep -q "$EPROBE" dynamic_events
  25 test -d events/synthetic/$SYNTH
  26 test -d events/eprobes/$EPROBE
  27
  28 echo 1 > events/eprobes/$EPROBE/enable
  29 ls
  30 echo 0 > events/eprobes/$EPROBE/enable
  31
  32 content=`grep '^ *ls-' trace | grep 'file='`
  33 nocontent=`grep '^ *ls-' trace | grep 'file=' | grep -v -e '"/' -e '"."'` || true
  34
  35 if [ -z "$content" ]; then
  36         exit_fail
  37 fi
  38
  39 if [ ! -z "$nocontent" ]; then
  40         exit_fail
  41 fi
  42
  43 echo "-:$EPROBE" >> dynamic_events
  44 echo '!'"hist:keys=common_pid:filename=\$__arg__1,ret=ret:onmatch($SYSTEM.$START).trace($SYNTH,\$filename,\$ret)" > events/$SYSTEM/$END/trigger
  45 echo '!'"hist:keys=common_pid:__arg__1=$FIELD" > events/$SYSTEM/$START/trigger
  46 echo '!'"$SYNTH u64 filename; s64 ret;" >> synthetic_events
  47
  48 ! grep -q "$SYNTH" dynamic_events
  49 ! grep -q "$EPROBE" dynamic_events
  50 ! test -d events/synthetic/$SYNTH
  51 ! test -d events/eprobes/$EPROBE
  52
  53 clear_trace