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tracing/selftest: Add test to test simple snapshot trigger for trace_…
…marker Several complex trigger tests were added for trace_marker, but not a simple one. This could be used to help diagnose a problem with the code by giving a reference between how complex a trigger is that fails. Suggested-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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Steven Rostedt (VMware)
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Jun 4, 2018
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tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-snapshot.tc
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#!/bin/sh | ||
# SPDX-License-Identifier: GPL-2.0 | ||
# description: trace_marker trigger - test snapshot trigger | ||
# flags: instance | ||
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do_reset() { | ||
reset_trigger | ||
echo > set_event | ||
echo 0 > snapshot | ||
clear_trace | ||
} | ||
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fail() { #msg | ||
do_reset | ||
echo $1 | ||
exit_fail | ||
} | ||
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if [ ! -f set_event ]; then | ||
echo "event tracing is not supported" | ||
exit_unsupported | ||
fi | ||
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if [ ! -f snapshot ]; then | ||
echo "snapshot is not supported" | ||
exit_unsupported | ||
fi | ||
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if [ ! -d events/ftrace/print ]; then | ||
echo "event trace_marker is not supported" | ||
exit_unsupported | ||
fi | ||
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if [ ! -f events/ftrace/print/trigger ]; then | ||
echo "event trigger is not supported" | ||
exit_unsupported | ||
fi | ||
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test_trace() { | ||
file=$1 | ||
x=$2 | ||
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cat $file | while read line; do | ||
comment=`echo $line | sed -e 's/^#//'` | ||
if [ "$line" != "$comment" ]; then | ||
continue | ||
fi | ||
echo "testing $line for >$x<" | ||
match=`echo $line | sed -e "s/>$x<//"` | ||
if [ "$line" == "$match" ]; then | ||
fail "$line does not have >$x< in it" | ||
fi | ||
let x=$x+2 | ||
done | ||
} | ||
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do_reset | ||
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echo "Test snapshot trace_marker tigger" | ||
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echo 'snapshot' > events/ftrace/print/trigger | ||
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# make sure the snapshot is allocated | ||
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grep -q 'Snapshot is allocated' snapshot | ||
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for i in `seq 1 10` ; do echo "hello >$i<" > trace_marker; done | ||
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test_trace trace 1 | ||
test_trace snapshot 2 | ||
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do_reset | ||
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exit 0 |