[linux-block.git] / tools / testing / selftests / ftrace / test.d / kprobe / multiple_kprobes.tc

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Register/unregister many kprobe events

[ -f kprobe_events ] || exit_unsupported # this is configurable

# ftrace fentry skip size depends on the machine architecture.
# Currently HAVE_KPROBES_ON_FTRACE defined on x86 and powerpc64le
case `uname -m` in
  x86_64|i[3456]86) OFFS=5;;
  ppc64le) OFFS=8;;
  *) OFFS=0;;
esac

echo "Setup up to 256 kprobes"
grep t /proc/kallsyms | cut -f3 -d" " | grep -v .*\\..* | \
head -n 256 | while read i; do echo p ${i}+${OFFS} ; done > kprobe_events ||:

echo 1 > events/kprobes/enable
echo 0 > events/kprobes/enable
echo > kprobe_events
echo "Waiting for unoptimizing & freeing"
sleep 5
echo "Done"
Commit	Line	Data
bdd7e3d6	1	#!/bin/sh
b2441318	2	# SPDX-License-Identifier: GPL-2.0
bdd7e3d6 MH	3	# description: Register/unregister many kprobe events
bdd7e3d6 MH	4
84c06566 TM	5	[ -f kprobe_events ] \|\| exit_unsupported # this is configurable
84c06566 TM	6
bdd7e3d6	7	# ftrace fentry skip size depends on the machine architecture.
f7181e5a	8	# Currently HAVE_KPROBES_ON_FTRACE defined on x86 and powerpc64le
bdd7e3d6 MH	9	case `uname -m` in
bdd7e3d6 MH	10	x86_64\|i[3456]86) OFFS=5;;
f7181e5a	11	ppc64le) OFFS=8;;
bdd7e3d6 MH	12	*) OFFS=0;;
	13	esac
	14
	15	echo "Setup up to 256 kprobes"
	16	grep t /proc/kallsyms \| cut -f3 -d" " \| grep -v .\\.. \| \
	17	head -n 256 \| while read i; do echo p ${i}+${OFFS} ; done > kprobe_events \|\|:
	18
	19	echo 1 > events/kprobes/enable
	20	echo 0 > events/kprobes/enable
	21	echo > kprobe_events
	22	echo "Waiting for unoptimizing & freeing"
	23	sleep 5
	24	echo "Done"