blob: 1bcb67dcae26797ffea12e57ff65d12ec4b92e55 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Kprobes event arguments with types
[ -f kprobe_events ] || exit_unsupported # this is configurable
grep "x8/16/32/64" README > /dev/null || exit_unsupported # version issue
gen_event() { # Bitsize
echo "p:testprobe _do_fork \$stack0:s$1 \$stack0:u$1 \$stack0:x$1 \$stack0:b4@4/$1"
}
check_types() { # s-type u-type x-type bf-type width
test $# -eq 5
CW=$5
CW=$((CW / 4))
X1=`printf "%x" $1 | tail -c ${CW}`
X2=`printf "%x" $2`
X3=`printf "%x" $3`
test $X1 = $X2
test $X2 = $X3
test 0x$X3 = $3
B4=`printf "%1x" $4`
B3=`printf "%03x" 0x$X3 | tail -c 2 | head -c 1`
test $B3 = $B4
}
for width in 64 32 16 8; do
: "Add new event with basic types"
gen_event $width > kprobe_events
grep testprobe kprobe_events
test -d events/kprobes/testprobe
: "Trace the event"
echo 1 > events/kprobes/testprobe/enable
( echo "forked")
echo 0 > events/kprobes/testprobe/enable
: "Confirm the arguments is recorded in given types correctly"
ARGS=`grep "testprobe" trace | sed -e 's/.* arg1=\(.*\) arg2=\(.*\) arg3=\(.*\) arg4=\(.*\)/\1 \2 \3 \4/'`
check_types $ARGS $width
: "Clear event for next loop"
echo "-:testprobe" >> kprobe_events
clear_trace
done
exit_pass
|
