Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
81 lines
1.4 KiB
Bash
81 lines
1.4 KiB
Bash
#!/bin/sh
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# description: Test ftrace direct functions against kprobes
|
|
# requires: kprobe_events
|
|
|
|
rmmod ftrace-direct ||:
|
|
if ! modprobe ftrace-direct ; then
|
|
echo "No ftrace-direct sample module - please build with CONFIG_SAMPLE_FTRACE_DIRECT=m"
|
|
exit_unresolved;
|
|
fi
|
|
|
|
echo "Let the module run a little"
|
|
sleep 1
|
|
|
|
grep -q "my_direct_func: waking up" trace
|
|
|
|
rmmod ftrace-direct
|
|
|
|
echo 'p:kwake wake_up_process task=$arg1' > kprobe_events
|
|
|
|
start_direct() {
|
|
echo > trace
|
|
modprobe ftrace-direct
|
|
sleep 1
|
|
grep -q "my_direct_func: waking up" trace
|
|
}
|
|
|
|
stop_direct() {
|
|
rmmod ftrace-direct
|
|
}
|
|
|
|
enable_probe() {
|
|
echo > trace
|
|
echo 1 > events/kprobes/kwake/enable
|
|
sleep 1
|
|
grep -q "kwake:" trace
|
|
}
|
|
|
|
disable_probe() {
|
|
echo 0 > events/kprobes/kwake/enable
|
|
}
|
|
|
|
test_kprobes() {
|
|
# probe -> direct -> no direct > no probe
|
|
enable_probe
|
|
start_direct
|
|
stop_direct
|
|
disable_probe
|
|
|
|
# probe -> direct -> no probe > no direct
|
|
enable_probe
|
|
start_direct
|
|
disable_probe
|
|
stop_direct
|
|
|
|
# direct -> probe -> no probe > no direct
|
|
start_direct
|
|
enable_probe
|
|
disable_probe
|
|
stop_direct
|
|
|
|
# direct -> probe -> no direct > no noprobe
|
|
start_direct
|
|
enable_probe
|
|
stop_direct
|
|
disable_probe
|
|
}
|
|
|
|
test_kprobes
|
|
|
|
# Now do this with a second registered direct function
|
|
echo "Running with another ftrace direct function"
|
|
|
|
modprobe ftrace-direct-too
|
|
|
|
test_kprobes
|
|
|
|
rmmod ftrace-direct-too
|
|
|
|
echo > kprobe_events
|