xref: /aosp_15_r20/external/ltp/testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_stack_trace.sh (revision 49cdfc7efb34551c7342be41a7384b9c40d7cab7) 
1#! /bin/sh
2
3###############################################################################
4#                                                                             #
5# Copyright (c) 2010 FUJITSU LIMITED                                          #
6#                                                                             #
7# This program is free software; you can redistribute it and/or modify it     #
8# under the terms of the GNU General Public License as published by the Free  #
9# Software Foundation; either version 2 of the License, or (at your option)   #
10# any later version.                                                          #
11#                                                                             #
12# Author: Li Zefan <[email protected]>                                      #
13#                                                                             #
14###############################################################################
15
16LOOP=400
17
18while true; do
19	i=0
20	while [ $i -lt $LOOP ]; do
21		cat "$TRACING_PATH"/stack_trace > /dev/null
22		i=$((i + 1))
23	done
24
25	sleep 1
26
27	i=0
28	while [ $i -lt $LOOP ]; do
29		echo 0 > /proc/sys/kernel/stack_tracer_enabled
30		echo 1 > /proc/sys/kernel/stack_tracer_enabled
31		i=$((i + 1))
32	done
33
34	sleep 1
35done
36