1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3# description: Generic dynamic event - add/remove probes with BTF arguments
4# requires: dynamic_events "<argname>":README
5
6KPROBES=
7FPROBES=
8FIELDS=
9
10if grep -qF "p[:[<group>/][<event>]] <place> [<args>]" README ; then
11  KPROBES=yes
12fi
13if grep -qF "f[:[<group>/][<event>]] <func-name>[%return] [<args>]" README ; then
14  FPROBES=yes
15fi
16if grep -qF "<argname>[->field[->field|.field...]]" README ; then
17  FIELDS=yes
18fi
19
20if [ -z "$KPROBES" -a -z "$FPROBES" ] ; then
21  exit_unsupported
22fi
23
24echo 0 > events/enable
25echo > dynamic_events
26
27TP=kfree
28TP2=kmem_cache_alloc
29TP3=getname_flags
30TP4=sched_wakeup
31
32if [ "$FPROBES" ] ; then
33echo "f:fpevent $TP object" >> dynamic_events
34echo "t:tpevent $TP ptr" >> dynamic_events
35
36grep -q "fpevent.*object=object" dynamic_events
37grep -q "tpevent.*ptr=ptr" dynamic_events
38
39echo > dynamic_events
40
41echo "f:fpevent $TP "'$arg1' >> dynamic_events
42grep -q "fpevent.*object=object" dynamic_events
43
44echo > dynamic_events
45
46echo "f:fpevent $TP "'$arg*' >> dynamic_events
47echo "t:tpevent $TP "'$arg*' >> dynamic_events
48
49grep -q "fpevent.*object=object" dynamic_events
50grep -q "tpevent.*ptr=ptr" dynamic_events
51! grep -q "tpevent.*_data" dynamic_events
52fi
53
54echo > dynamic_events
55
56if [ "$FIELDS" ] ; then
57echo "t:tpevent ${TP2} obj_size=s->object_size" >> dynamic_events
58echo "f:fpevent ${TP3}%return path=\$retval->name:string" >> dynamic_events
59echo "t:tpevent2 ${TP4} p->se.group_node.next->prev" >> dynamic_events
60
61grep -q "tpevent .*obj_size=s->object_size" dynamic_events
62grep -q "fpevent.*path=\$retval->name:string" dynamic_events
63grep -q 'tpevent2 .*p->se.group_node.next->prev' dynamic_events
64
65echo > dynamic_events
66fi
67
68if [ "$KPROBES" ] ; then
69echo "p:kpevent $TP object" >> dynamic_events
70grep -q "kpevent.*object=object" dynamic_events
71
72echo > dynamic_events
73
74echo "p:kpevent $TP "'$arg*' >> dynamic_events
75grep -q "kpevent.*object=object" dynamic_events
76fi
77
78clear_trace
79