1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3# description: Kprobe event auto/manual naming
4# requires: kprobe_events
5
6:;: "Add an event on function without name" ;:
7
8FUNC=`grep " [tT] .*vfs_read$" /proc/kallsyms | tail -n 1 | cut -f 3 -d " "`
9[ "x" != "x$FUNC" ] || exit_unresolved
10echo "p $FUNC" > kprobe_events
11PROBE_NAME=`echo $FUNC | tr ".:" "_"`
12test -d events/kprobes/p_${PROBE_NAME}_0 || exit_failure
13
14:;: "Add an event on function with new name" ;:
15
16echo "p:event1 $FUNC" > kprobe_events
17test -d events/kprobes/event1 || exit_failure
18
19:;: "Add an event on function with new name and group" ;:
20
21echo "p:kprobes2/event2 $FUNC" > kprobe_events
22test -d events/kprobes2/event2 || exit_failure
23
24:;: "Add an event on dot function without name" ;:
25
26find_dot_func() {
27	if [ ! -f available_filter_functions ]; then
28		grep -m 10 " [tT] .*\.isra\..*$" /proc/kallsyms | tail -n 1 | cut -f 3 -d " "
29		return;
30	fi
31
32	grep " [tT] .*\.isra\..*" /proc/kallsyms | cut -f 3 -d " " | while read f; do
33		cnt=`grep -s $f available_filter_functions | wc -l`;
34		if [ $cnt -eq 1 ]; then
35			echo $f
36			break
37		fi
38	done
39}
40
41FUNC=`find_dot_func | tail -n 1`
42[ "x" != "x$FUNC" ] || exit_unresolved
43echo "p $FUNC" > kprobe_events
44EVENT=`grep $FUNC kprobe_events | cut -f 1 -d " " | cut -f 2 -d:`
45[ "x" != "x$EVENT" ] || exit_failure
46test -d events/$EVENT || exit_failure
47