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