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selftests/ftrace: Add a testcase for kprobe multiprobe event

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Add a testcase for kprobe event with multi-probe.

Link: http://lkml.kernel.org/r/156095692637.28024.17188971794698768977.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu 2019-06-20 00:08:46 +09:00 committed by Steven Rostedt (VMware)
parent a42e3c4de9
commit cf881485eb
1 changed files with 35 additions and 0 deletions
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35
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_multiprobe.tc Normal file
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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Create/delete multiprobe on kprobe event
[ -f kprobe_events ] || exit_unsupported
grep -q "Create/append/" README || exit_unsupported
# Choose 2 symbols for target
SYM1=_do_fork
SYM2=do_exit
EVENT_NAME=kprobes/testevent
DEF1="p:$EVENT_NAME $SYM1"
DEF2="p:$EVENT_NAME $SYM2"
:;: "Define an event which has 2 probes" ;:
echo $DEF1 >> kprobe_events
echo $DEF2 >> kprobe_events
cat kprobe_events | grep "$DEF1"
cat kprobe_events | grep "$DEF2"
:;: "Remove the event by name (should remove both)" ;:
echo "-:$EVENT_NAME" >> kprobe_events
test `cat kprobe_events | wc -l` -eq 0
:;: "Remove just 1 event" ;:
echo $DEF1 >> kprobe_events
echo $DEF2 >> kprobe_events
echo "-:$EVENT_NAME $SYM1" >> kprobe_events
! cat kprobe_events | grep "$DEF1"
cat kprobe_events | grep "$DEF2"
:;: "Appending different type must fail" ;:
! echo "$DEF1 \$stack" >> kprobe_events