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
6 KPROBES=
7 FPROBES=
8 FIELDS=
9
10 if grep -qF "p[:[<group>/][<event>]] <place> [<args>]" README ; then
11 KPROBES=yes
12 fi
13 if grep -qF "f[:[<group>/][<event>]] <func-name>[%return] [<args>]" README ; then
14 FPROBES=yes
15 fi
16 if grep -qF "<argname>[->field[->field|.field...]]" README ; then
17 FIELDS=yes
18 fi
19
20 if [ -z "$KPROBES" -a -z "$FPROBES" ] ; then
21 exit_unsupported
22 fi
23
24 echo 0 > events/enable
25 echo > dynamic_events
26
27 TP=kfree
28 TP2=kmem_cache_alloc
29 TP3=getname_flags
30 TP4=sched_wakeup
31
32 if [ "$FPROBES" ] ; then
33 echo "f:fpevent $TP object" >> dynamic_events
34 echo "t:tpevent $TP ptr" >> dynamic_events
35
36 grep -q "fpevent.*object=object" dynamic_events
37 grep -q "tpevent.*ptr=ptr" dynamic_events
38
39 echo > dynamic_events
40
41 echo "f:fpevent $TP "'$arg1' >> dynamic_events
42 grep -q "fpevent.*object=object" dynamic_events
43
44 echo > dynamic_events
45
46 echo "f:fpevent $TP "'$arg*' >> dynamic_events
47 echo "t:tpevent $TP "'$arg*' >> dynamic_events
48
49 grep -q "fpevent.*object=object" dynamic_events
50 grep -q "tpevent.*ptr=ptr" dynamic_events
51 ! grep -q "tpevent.*_data" dynamic_events
52 fi
53
54 echo > dynamic_events
55
56 if [ "$FIELDS" -a "$FPROBES" ] ; then
57 echo "t:tpevent ${TP2} obj_size=s->object_size" >> dynamic_events
58 echo "f:fpevent ${TP3}%return path=\$retval->name:string" >> dynamic_events
59 echo "t:tpevent2 ${TP4} p->se.group_node.next->prev" >> dynamic_events
60
61 grep -q "tpevent .*obj_size=s->object_size" dynamic_events
62 grep -q "fpevent.*path=\$retval->name:string" dynamic_events
63 grep -q 'tpevent2 .*p->se.group_node.next->prev' dynamic_events
64
65 echo > dynamic_events
66 fi
67
68 if [ "$KPROBES" ] ; then
69 echo "p:kpevent $TP object" >> dynamic_events
70 grep -q "kpevent.*object=object" dynamic_events
71
72 echo > dynamic_events
73
74 echo "p:kpevent $TP "'$arg*' >> dynamic_events
75 grep -q "kpevent.*object=object" dynamic_events
76 fi
77
78 clear_trace
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.