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
7fail() { #msg
8    echo $1
9    exit_fail
10}
11
12echo "Test histogram basic trigger"
13
14echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger
15for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
16grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \
17    fail "hist trigger on sched_process_fork did not work"
18grep child events/sched/sched_process_fork/hist > /dev/null || \
19    fail "hist trigger on sched_process_fork did not work"
20
21reset_trigger
22
23echo "Test histogram with compound keys"
24
25echo 'hist:keys=parent_pid,child_pid' > events/sched/sched_process_fork/trigger
26for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
27grep '^{ parent_pid:.*, child_pid:.*}' events/sched/sched_process_fork/hist > /dev/null || \
28    fail "compound keys on sched_process_fork did not work"
29
30reset_trigger
31
32echo "Test histogram with string key"
33
34echo 'hist:keys=parent_comm' > events/sched/sched_process_fork/trigger
35for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
36COMM=`cat /proc/$$/comm`
37grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
38    fail "string key on sched_process_fork did not work"
39
40reset_trigger
41
42echo "Test histogram with sort key"
43
44echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger
45for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
46
47check_inc() {
48    while [ $# -gt 1 ]; do
49        [ $1 -gt $2 ] && return 1
50        shift 1
51    done
52    return 0
53}
54check_inc `grep -o "child_pid:[[:space:]]*[[:digit:]]*" \
55    events/sched/sched_process_fork/hist | cut -d: -f2 ` ||
56    fail "sort param on sched_process_fork did not work"
57
58exit 0
59