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selftests/ftrace: Add kprobe profile testcase

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Add a testcase for testing kprobe_profile interface
which provides per-kprobe event hit/misshit counts.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
This commit is contained in:
Masami Hiramatsu 2018-08-30 23:20:28 +09:00 committed by Shuah Khan (Samsung OSG)
parent b0898e8485
commit 32f6e5da83
1 changed files with 15 additions and 0 deletions
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15
tools/testing/selftests/ftrace/test.d/kprobe/profile.tc Normal file
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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Kprobe dynamic event - adding and removing
[ -f kprobe_events ] || exit_unsupported # this is configurable
! grep -q 'myevent' kprobe_profile
echo p:myevent _do_fork > kprobe_events
grep -q 'myevent[[:space:]]*0[[:space:]]*0$' kprobe_profile
echo 1 > events/kprobes/myevent/enable
( echo "forked" )
grep -q 'myevent[[:space:]]*[[:digit:]]*[[:space:]]*0$' kprobe_profile
echo 0 > events/kprobes/myevent/enable
echo > kprobe_events
! grep -q 'myevent' kprobe_profile