1#!/bin/sh
2# description: event trigger - test histogram trigger
3# flags: instance
4
5do_reset() {
6    reset_trigger
7    echo > set_event
8    clear_trace
9}
10
11fail() { #msg
12    do_reset
13    echo $1
14    exit $FAIL
15}
16
17if [ ! -f set_event -o ! -d events/sched ]; then
18    echo "event tracing is not supported"
19    exit_unsupported
20fi
21
22if [ ! -f events/sched/sched_process_fork/trigger ]; then
23    echo "event trigger is not supported"
24    exit_unsupported
25fi
26
27if [ ! -f events/sched/sched_process_fork/hist ]; then
28    echo "hist trigger is not supported"
29    exit_unsupported
30fi
31
32reset_tracer
33do_reset
34
35echo "Test histogram basic tigger"
36
37echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger
38for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
39grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \
40    fail "hist trigger on sched_process_fork did not work"
41grep child events/sched/sched_process_fork/hist > /dev/null || \
42    fail "hist trigger on sched_process_fork did not work"
43
44reset_trigger
45
46echo "Test histogram with compound keys"
47
48echo 'hist:keys=parent_pid,child_pid' > events/sched/sched_process_fork/trigger
49for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
50grep '^{ parent_pid:.*, child_pid:.*}' events/sched/sched_process_fork/hist > /dev/null || \
51    fail "compound keys on sched_process_fork did not work"
52
53reset_trigger
54
55echo "Test histogram with string key"
56
57echo 'hist:keys=parent_comm' > events/sched/sched_process_fork/trigger
58for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
59COMM=`cat /proc/$$/comm`
60grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
61    fail "string key on sched_process_fork did not work"
62
63reset_trigger
64
65echo "Test histogram with sort key"
66
67echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger
68for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
69
70check_inc() {
71    while [ $# -gt 1 ]; do
72        [ $1 -gt $2 ] && return 1
73        shift 1
74    done
75    return 0
76}
77check_inc `grep -o "child_pid:[[:space:]]*[[:digit:]]*" \
78    events/sched/sched_process_fork/hist | cut -d: -f2 ` ||
79    fail "sort param on sched_process_fork did not work"
80
81do_reset
82
83exit 0
84