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Commit 33697bd4 authored by Steven Rostedt (VMware)'s avatar Steven Rostedt (VMware)
Browse files

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: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Acked-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent a7dfdbef

tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-snapshot.tc

0 → 100644
+74 −0
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0

# description: trace_marker trigger - test snapshot trigger

# flags: instance



do_reset() {

    reset_trigger

    echo > set_event

    echo 0 > snapshot

    clear_trace

}



fail() { #msg

    do_reset

    echo $1

    exit_fail

}



if [ ! -f set_event ]; then

    echo "event tracing is not supported"

    exit_unsupported

fi



if [ ! -f snapshot ]; then

    echo "snapshot is not supported"

    exit_unsupported

fi



if [ ! -d events/ftrace/print ]; then

    echo "event trace_marker is not supported"

    exit_unsupported

fi



if [ ! -f events/ftrace/print/trigger ]; then

    echo "event trigger is not supported"

    exit_unsupported

fi



test_trace() {

    file=$1

    x=$2



    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

}



do_reset



echo "Test snapshot trace_marker tigger"



echo 'snapshot' > events/ftrace/print/trigger



# make sure the snapshot is allocated



grep -q 'Snapshot is allocated' snapshot



for i in `seq 1 10` ; do echo "hello >$i<" > trace_marker; done



test_trace trace 1

test_trace snapshot 2



do_reset



exit 0