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committed fa0218ef733module_param_call(kgdbts, param_set_kgdbts_var, param_get_string, &kps, 0644);/* * kgdbts is a test suite for kgdb for the sole purpose of validating * that key pieces of the kgdb internals are working properly such as * HW/SW breakpoints, single stepping, and NMI. * * Created by: Jason Wessel <jason.wessel@windriver.com> * * Copyright (c) 2008 Wind River Systems, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *//* Information about the kgdb test suite. * ------------------------------------- * * The kgdb test suite is designed as a KGDB I/O module which * simulates the communications that a debugger would have with kgdb. * The tests are broken up in to a line by line and referenced here as * a "get" which is kgdb requesting input and "put" which is kgdb * sending a response. * * The kgdb suite can be invoked from the kernel command line * arguments system or executed dynamically at run time. The test * suite uses the variable "kgdbts" to obtain the information about * which tests to run and to configure the verbosity level. The * following are the various characters you can use with the kgdbts= * line: * * When using the "kgdbts=" you only choose one of the following core * test types: * A = Run all the core tests silently * V1 = Run all the core tests with minimal output * V2 = Run all the core tests in debug mode * * You can also specify optional tests: * N## = Go to sleep with interrupts of for ## seconds * to test the HW NMI watchdog * F## = Break at do_fork for ## iterations * S## = Break at sys_open for ## iterations * I## = Run the single step test ## iterations * * NOTE: that the do_fork and sys_open tests are mutually exclusive. * * To invoke the kgdb test suite from boot you use a kernel start * argument as follows: * kgdbts=V1 kgdbwait * Or if you wanted to perform the NMI test for 6 seconds and do_fork * test for 100 forks, you could use: * kgdbts=V1N6F100 kgdbwait * * The test suite can also be invoked at run time with: * echo kgdbts=V1N6F100 > /sys/module/kgdbts/parameters/kgdbts * Or as another example: