1#!/bin/sh
2# description: Test creation and deletion of trace instances while setting an event
3
4if [ ! -d instances ] ; then
5    echo "no instance directory with this kernel"
6    exit_unsupported;
7fi
8
9fail() { # mesg
10    rmdir foo 2>/dev/null
11    echo $1
12    set -e
13    exit $FAIL
14}
15
16cd instances
17
18# we don't want to fail on error
19set +e
20
21mkdir x
22rmdir x
23result=$?
24
25if [ $result -ne 0 ]; then
26    echo "instance rmdir not supported"
27    exit_unsupported
28fi
29
30instance_slam() {
31        while :; do
32                mkdir foo 2> /dev/null
33                rmdir foo 2> /dev/null
34        done
35}
36
37instance_read() {
38        while :; do
39                cat foo/trace 1> /dev/null 2>&1
40        done
41}
42
43instance_set() {
44        while :; do
45                echo 1 > foo/events/sched/sched_switch
46        done 2> /dev/null
47}
48
49instance_slam &
50p1=$!
51echo $p1
52
53instance_set &
54p2=$!
55echo $p2
56
57instance_read &
58p3=$!
59echo $p3
60
61sleep 1
62
63kill -1 $p3
64kill -1 $p2
65kill -1 $p1
66
67echo "Wait for processes to finish"
68wait $p1 $p2 $p3
69echo "all processes finished, wait for cleanup"
70sleep 1
71
72mkdir foo
73ls foo > /dev/null
74rmdir foo
75if [ -d foo ]; then
76        fail "foo still exists"
77fi
78exit 0
79
80
81
82
83instance_slam() {
84    while :; do
85	mkdir x
86	mkdir y
87	mkdir z
88	rmdir x
89	rmdir y
90	rmdir z
91    done 2>/dev/null
92}
93
94instance_slam &
95p1=$!
96echo $p1
97
98instance_slam &
99p2=$!
100echo $p2
101
102instance_slam &
103p3=$!
104echo $p3
105
106instance_slam &
107p4=$!
108echo $p4
109
110instance_slam &
111p5=$!
112echo $p5
113
114ls -lR >/dev/null
115sleep 1
116
117kill -1 $p1
118kill -1 $p2
119kill -1 $p3
120kill -1 $p4
121kill -1 $p5
122
123echo "Wait for processes to finish"
124wait $p1 $p2 $p3 $p4 $p5
125echo "all processes finished, wait for cleanup"
126
127mkdir x y z
128ls x y z
129rmdir x y z
130for d in x y z; do
131        if [ -d $d ]; then
132                fail "instance $d still exists"
133        fi
134done
135
136set -e
137
138exit 0
139