1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3# description: event trigger - test histogram modifiers
4# flags: instance
5
6fail() { #msg
7    echo $1
8    exit_fail
9}
10
11if [ ! -f set_event -o ! -d events/sched ]; then
12    echo "event tracing is not supported"
13    exit_unsupported
14fi
15
16if [ ! -f events/sched/sched_process_fork/trigger ]; then
17    echo "event trigger is not supported"
18    exit_unsupported
19fi
20
21if [ ! -f events/sched/sched_process_fork/hist ]; then
22    echo "hist trigger is not supported"
23    exit_unsupported
24fi
25
26echo "Test histogram with execname modifier"
27
28echo 'hist:keys=common_pid.execname' > events/sched/sched_process_fork/trigger
29for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
30COMM=`cat /proc/$$/comm`
31grep "common_pid: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
32    fail "execname modifier on sched_process_fork did not work"
33
34reset_trigger
35
36echo "Test histogram with hex modifier"
37
38echo 'hist:keys=parent_pid.hex' > events/sched/sched_process_fork/trigger
39for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
40# Note that $$ is the parent pid. $PID is current PID.
41HEX=`printf %x $PID`
42grep "parent_pid: $HEX" events/sched/sched_process_fork/hist > /dev/null || \
43    fail "hex modifier on sched_process_fork did not work"
44
45reset_trigger
46
47echo "Test histogram with syscall modifier"
48
49echo 'hist:keys=id.syscall' > events/raw_syscalls/sys_exit/trigger
50for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
51grep "id: \(unknown_\|sys_\)" events/raw_syscalls/sys_exit/hist > /dev/null || \
52    fail "syscall modifier on raw_syscalls/sys_exit did not work"
53
54
55reset_trigger
56
57echo "Test histgram with log2 modifier"
58
59echo 'hist:keys=bytes_req.log2' > events/kmem/kmalloc/trigger
60for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
61grep 'bytes_req: ~ 2^[0-9]*' events/kmem/kmalloc/hist > /dev/null || \
62    fail "log2 modifier on kmem/kmalloc did not work"
63
64exit 0
65