1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0
3 # description: event trigger - test histogram trigger
4 # requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist
5 # flags: instance
6
7 fail() { #msg
8 echo $1
9 exit_fail
10 }
11
12 echo "Test histogram basic trigger"
13
14 echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger
15 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
16 grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \
17 fail "hist trigger on sched_process_fork did not work"
18 grep child events/sched/sched_process_fork/hist > /dev/null || \
19 fail "hist trigger on sched_process_fork did not work"
20
21 reset_trigger
22
23 echo "Test histogram with compound keys"
24
25 echo 'hist:keys=parent_pid,child_pid' > events/sched/sched_process_fork/trigger
26 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
27 grep '^{ parent_pid:.*, child_pid:.*}' events/sched/sched_process_fork/hist > /dev/null || \
28 fail "compound keys on sched_process_fork did not work"
29
30 reset_trigger
31
32 echo "Test histogram with string key"
33
34 echo 'hist:keys=parent_comm' > events/sched/sched_process_fork/trigger
35 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
36 COMM=`cat /proc/$$/comm`
37 grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
38 fail "string key on sched_process_fork did not work"
39
40 reset_trigger
41
42 echo "Test histogram with sym modifier"
43
44 echo 'hist:keys=call_site.sym' > events/kmem/kmalloc/trigger
45 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
46 grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]* *}' events/kmem/kmalloc/hist > /dev/null || \
47 fail "sym modifier on kmalloc call_site did not work"
48
49 reset_trigger
50
51 echo "Test histogram with sym-offset modifier"
52
53 echo 'hist:keys=call_site.sym-offset' > events/kmem/kmalloc/trigger
54 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
55 grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]*+0x[0-9a-f][0-9a-f]*' events/kmem/kmalloc/hist > /dev/null || \
56 fail "sym-offset modifier on kmalloc call_site did not work"
57
58 reset_trigger
59
60 echo "Test histogram with sort key"
61
62 echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger
63 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
64
65 check_inc() {
66 while [ $# -gt 1 ]; do
67 [ $1 -gt $2 ] && return 1
68 shift 1
69 done
70 return 0
71 }
72 check_inc `grep -o "child_pid:[[:space:]]*[[:digit:]]*" \
73 events/sched/sched_process_fork/hist | cut -d: -f2 ` ||
74 fail "sort param on sched_process_fork did not work"
75
76 exit 0
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.