66 lines
994 B
Bash
66 lines
994 B
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: event tracing - enable/disable with top level files
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do_reset() {
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echo > set_event
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clear_trace
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}
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fail() { #msg
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do_reset
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echo $1
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exit_fail
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}
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yield() {
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ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1
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}
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if [ ! -f available_events -o ! -f set_event -o ! -d events ]; then
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echo "event tracing is not supported"
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exit_unsupported
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fi
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reset_tracer
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do_reset
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echo '*:*' > set_event
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yield
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echo 0 > tracing_on
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count=`head -n 128 trace | grep -v ^# | wc -l`
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if [ $count -eq 0 ]; then
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fail "none of events are recorded"
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fi
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do_reset
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echo 1 > events/enable
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echo 1 > tracing_on
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yield
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echo 0 > tracing_on
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count=`head -n 128 trace | grep -v ^# | wc -l`
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if [ $count -eq 0 ]; then
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fail "none of events are recorded"
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fi
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do_reset
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echo 0 > events/enable
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yield
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count=`cat trace | grep -v ^# | wc -l`
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if [ $count -ne 0 ]; then
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fail "any of events should not be recorded"
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fi
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do_reset
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exit 0
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