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 "$SYNTH unsigned long filename; long ret;" > synthetic_events 18 echo "hist:keys=common_pid:__arg__1=$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
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