93 lines
2.1 KiB
Bash
93 lines
2.1 KiB
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: Generic dynamic event - add/remove fprobe events
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# requires: dynamic_events "f[:[<group>/][<event>]] <func-name>[%return] [<args>]":README
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echo 0 > events/enable
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echo > dynamic_events
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PLACE=$FUNCTION_FORK
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PLACE2="kmem_cache_free"
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PLACE3="schedule_timeout"
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# Some functions may have BPF programs attached, therefore
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# count already enabled_functions before tests start
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ocnt=`cat enabled_functions | wc -l`
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echo "f:myevent1 $PLACE" >> dynamic_events
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echo "f:myevent2 $PLACE%return" >> dynamic_events
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# add another event
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echo "f:myevent3 $PLACE2" >> dynamic_events
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grep -q myevent1 dynamic_events
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grep -q myevent2 dynamic_events
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grep -q myevent3 dynamic_events
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test -d events/fprobes/myevent1
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test -d events/fprobes/myevent2
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echo 1 > events/fprobes/myevent1/enable
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# Make sure the event is attached and is the only one
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grep -q $PLACE enabled_functions
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cnt=`cat enabled_functions | wc -l`
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if [ $cnt -ne $((ocnt + 1)) ]; then
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exit_fail
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fi
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echo 1 > events/fprobes/myevent2/enable
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# It should till be the only attached function
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cnt=`cat enabled_functions | wc -l`
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if [ $cnt -ne $((ocnt + 1)) ]; then
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exit_fail
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fi
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echo 1 > events/fprobes/myevent3/enable
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# If the function is different, the attached function should be increased
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grep -q $PLACE2 enabled_functions
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cnt=`cat enabled_functions | wc -l`
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if [ $cnt -ne $((ocnt + 2)) ]; then
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exit_fail
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fi
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echo 0 > events/fprobes/myevent2/enable
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echo "-:myevent2" >> dynamic_events
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grep -q myevent1 dynamic_events
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! grep -q myevent2 dynamic_events
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# should still have 2 left
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cnt=`cat enabled_functions | wc -l`
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if [ $cnt -ne $((ocnt + 2)) ]; then
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exit_fail
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fi
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echo 0 > events/fprobes/enable
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echo > dynamic_events
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# Should have none left
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cnt=`cat enabled_functions | wc -l`
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if [ $cnt -ne $ocnt ]; then
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exit_fail
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fi
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echo "f:myevent4 $PLACE" >> dynamic_events
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echo 1 > events/fprobes/myevent4/enable
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# Should only have one enabled
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cnt=`cat enabled_functions | wc -l`
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if [ $cnt -ne $((ocnt + 1)) ]; then
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exit_fail
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fi
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echo 0 > events/fprobes/enable
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echo > dynamic_events
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# Should have none left
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cnt=`cat enabled_functions | wc -l`
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if [ $cnt -ne $ocnt ]; then
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exit_fail
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fi
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clear_trace
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