1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0
3 # description: event trigger - test histogram modifiers
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 with execname modifier"
13
14 echo 'hist:keys=common_pid.execname' > events/sched/sched_process_fork/trigger
15 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
16 COMM=`cat /proc/$$/comm`
17 grep "common_pid: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
18 fail "execname modifier on sched_process_fork did not work"
19
20 reset_trigger
21
22 echo "Test histogram with hex modifier"
23
24 echo 'hist:keys=parent_pid.hex' > events/sched/sched_process_fork/trigger
25 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
26 # Note that $$ is the parent pid. $PID is current PID.
27 HEX=`printf %x $PID`
28 grep "parent_pid: $HEX" events/sched/sched_process_fork/hist > /dev/null || \
29 fail "hex modifier on sched_process_fork did not work"
30
31 reset_trigger
32
33 echo "Test histogram with syscall modifier"
34
35 echo 'hist:keys=id.syscall' > events/raw_syscalls/sys_exit/trigger
36 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
37 grep "id: \(unknown_\|sys_\)" events/raw_syscalls/sys_exit/hist > /dev/null || \
38 fail "syscall modifier on raw_syscalls/sys_exit did not work"
39
40
41 reset_trigger
42
43 echo "Test histogram with log2 modifier"
44
45 echo 'hist:keys=bytes_req.log2' > events/kmem/kmalloc/trigger
46 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
47 grep 'bytes_req: ~ 2^[0-9]*' events/kmem/kmalloc/hist > /dev/null || \
48 fail "log2 modifier on kmem/kmalloc did not work"
49
50 exit 0
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