trigger/inter-event/trigger-synthetic-eprobe.tc

0001 #!/bin/sh
0002 # SPDX-License-Identifier: GPL-2.0
0003 # description: event trigger - test inter-event histogram trigger eprobe on synthetic event
0004 # requires: dynamic_events synthetic_events events/syscalls/sys_enter_openat/hist "e[:[<group>/]<event>] <attached-group>.<attached-event> [<args>]":README
0005
0006 echo 0 > events/enable
0007
0008 clear_dynamic_events
0009
0010 SYSTEM="syscalls"
0011 START="sys_enter_openat"
0012 END="sys_exit_openat"
0013 FIELD="filename"
0014 SYNTH="synth_open"
0015 EPROBE="eprobe_open"
0016
0017 echo "$SYNTH u64 filename; s64 ret;" > synthetic_events
0018 echo "hist:keys=common_pid:__arg__1=$FIELD" > events/$SYSTEM/$START/trigger
0019 echo "hist:keys=common_pid:filename=\$__arg__1,ret=ret:onmatch($SYSTEM.$START).trace($SYNTH,\$filename,\$ret)" > events/$SYSTEM/$END/trigger
0020
0021 echo "e:$EPROBE synthetic/$SYNTH file=+0(\$filename):ustring ret=\$ret:s64" >> dynamic_events
0022
0023 grep -q "$SYNTH" dynamic_events
0024 grep -q "$EPROBE" dynamic_events
0025 test -d events/synthetic/$SYNTH
0026 test -d events/eprobes/$EPROBE
0027
0028 echo 1 > events/eprobes/$EPROBE/enable
0029 ls
0030 echo 0 > events/eprobes/$EPROBE/enable
0031
0032 content=`grep '^ *ls-' trace | grep 'file='`
0033 nocontent=`grep '^ *ls-' trace | grep 'file=' | grep -v -e '"/' -e '"."'` || true
0034
0035 if [ -z "$content" ]; then
0036         exit_fail
0037 fi
0038
0039 if [ ! -z "$nocontent" ]; then
0040         exit_fail
0041 fi
0042
0043 echo "-:$EPROBE" >> dynamic_events
0044 echo '!'"hist:keys=common_pid:filename=\$__arg__1,ret=ret:onmatch($SYSTEM.$START).trace($SYNTH,\$filename,\$ret)" > events/$SYSTEM/$END/trigger
0045 echo '!'"hist:keys=common_pid:__arg__1=$FIELD" > events/$SYSTEM/$START/trigger
0046 echo '!'"$SYNTH u64 filename; s64 ret;" >> synthetic_events
0047
0048 ! grep -q "$SYNTH" dynamic_events
0049 ! grep -q "$EPROBE" dynamic_events
0050 ! test -d events/synthetic/$SYNTH
0051 ! test -d events/eprobes/$EPROBE
0052
0053 clear_trace