diff options
author | Stephen Rothwell <sfr@canb.auug.org.au> | 2008-04-04 15:08:14 +1100 |
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committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2008-04-04 15:08:14 +1100 |
commit | 12abbceea95214163d393492ebf3816b0532bfab (patch) | |
tree | 9b96ff106f480fd4f6a25c4d0427392d6ebff2c2 /drivers | |
parent | 0282c259bd225c7779e411e8c191b2cabd233481 (diff) | |
parent | 1caff9ba52970a3492bfe8a1b9e26291d34259c5 (diff) |
Merge commit 'tests/master'
Conflicts:
lib/Kconfig.debug
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/misc/Makefile | 1 | ||||
-rw-r--r-- | drivers/misc/lkdtm.c | 345 |
2 files changed, 0 insertions, 346 deletions
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index c975028f101b..7d1977300ece 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -12,7 +12,6 @@ obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o -obj-$(CONFIG_LKDTM) += lkdtm.o obj-$(CONFIG_TIFM_CORE) += tifm_core.o obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o obj-$(CONFIG_PHANTOM) += phantom.o diff --git a/drivers/misc/lkdtm.c b/drivers/misc/lkdtm.c deleted file mode 100644 index 1bfe5d16963b..000000000000 --- a/drivers/misc/lkdtm.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * Kprobe module for testing crash dumps - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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. - * - * Copyright (C) IBM Corporation, 2006 - * - * Author: Ankita Garg <ankita@in.ibm.com> - * - * This module induces system failures at predefined crashpoints to - * evaluate the reliability of crash dumps obtained using different dumping - * solutions. - * - * It is adapted from the Linux Kernel Dump Test Tool by - * Fernando Luis Vazquez Cao <http://lkdtt.sourceforge.net> - * - * Usage : insmod lkdtm.ko [recur_count={>0}] cpoint_name=<> cpoint_type=<> - * [cpoint_count={>0}] - * - * recur_count : Recursion level for the stack overflow test. Default is 10. - * - * cpoint_name : Crash point where the kernel is to be crashed. It can be - * one of INT_HARDWARE_ENTRY, INT_HW_IRQ_EN, INT_TASKLET_ENTRY, - * FS_DEVRW, MEM_SWAPOUT, TIMERADD, SCSI_DISPATCH_CMD, - * IDE_CORE_CP - * - * cpoint_type : Indicates the action to be taken on hitting the crash point. - * It can be one of PANIC, BUG, EXCEPTION, LOOP, OVERFLOW - * - * cpoint_count : Indicates the number of times the crash point is to be hit - * to trigger an action. The default is 10. - */ - -#include <linux/kernel.h> -#include <linux/fs.h> -#include <linux/module.h> -#include <linux/buffer_head.h> -#include <linux/kprobes.h> -#include <linux/list.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/hrtimer.h> -#include <scsi/scsi_cmnd.h> - -#ifdef CONFIG_IDE -#include <linux/ide.h> -#endif - -#define NUM_CPOINTS 8 -#define NUM_CPOINT_TYPES 5 -#define DEFAULT_COUNT 10 -#define REC_NUM_DEFAULT 10 - -enum cname { - INVALID, - INT_HARDWARE_ENTRY, - INT_HW_IRQ_EN, - INT_TASKLET_ENTRY, - FS_DEVRW, - MEM_SWAPOUT, - TIMERADD, - SCSI_DISPATCH_CMD, - IDE_CORE_CP -}; - -enum ctype { - NONE, - PANIC, - BUG, - EXCEPTION, - LOOP, - OVERFLOW -}; - -static char* cp_name[] = { - "INT_HARDWARE_ENTRY", - "INT_HW_IRQ_EN", - "INT_TASKLET_ENTRY", - "FS_DEVRW", - "MEM_SWAPOUT", - "TIMERADD", - "SCSI_DISPATCH_CMD", - "IDE_CORE_CP" -}; - -static char* cp_type[] = { - "PANIC", - "BUG", - "EXCEPTION", - "LOOP", - "OVERFLOW" -}; - -static struct jprobe lkdtm; - -static int lkdtm_parse_commandline(void); -static void lkdtm_handler(void); - -static char* cpoint_name; -static char* cpoint_type; -static int cpoint_count = DEFAULT_COUNT; -static int recur_count = REC_NUM_DEFAULT; - -static enum cname cpoint = INVALID; -static enum ctype cptype = NONE; -static int count = DEFAULT_COUNT; - -module_param(recur_count, int, 0644); -MODULE_PARM_DESC(recur_count, " Recursion level for the stack overflow test, "\ - "default is 10"); -module_param(cpoint_name, charp, 0644); -MODULE_PARM_DESC(cpoint_name, " Crash Point, where kernel is to be crashed"); -module_param(cpoint_type, charp, 0644); -MODULE_PARM_DESC(cpoint_type, " Crash Point Type, action to be taken on "\ - "hitting the crash point"); -module_param(cpoint_count, int, 0644); -MODULE_PARM_DESC(cpoint_count, " Crash Point Count, number of times the "\ - "crash point is to be hit to trigger action"); - -static unsigned int jp_do_irq(unsigned int irq) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -static irqreturn_t jp_handle_irq_event(unsigned int irq, - struct irqaction *action) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -static void jp_tasklet_action(struct softirq_action *a) -{ - lkdtm_handler(); - jprobe_return(); -} - -static void jp_ll_rw_block(int rw, int nr, struct buffer_head *bhs[]) -{ - lkdtm_handler(); - jprobe_return(); -} - -struct scan_control; - -static unsigned long jp_shrink_inactive_list(unsigned long max_scan, - struct zone *zone, - struct scan_control *sc) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -static int jp_hrtimer_start(struct hrtimer *timer, ktime_t tim, - const enum hrtimer_mode mode) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -static int jp_scsi_dispatch_cmd(struct scsi_cmnd *cmd) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -#ifdef CONFIG_IDE -int jp_generic_ide_ioctl(ide_drive_t *drive, struct file *file, - struct block_device *bdev, unsigned int cmd, - unsigned long arg) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} -#endif - -static int lkdtm_parse_commandline(void) -{ - int i; - - if (cpoint_name == NULL || cpoint_type == NULL || - cpoint_count < 1 || recur_count < 1) - return -EINVAL; - - for (i = 0; i < NUM_CPOINTS; ++i) { - if (!strcmp(cpoint_name, cp_name[i])) { - cpoint = i + 1; - break; - } - } - - for (i = 0; i < NUM_CPOINT_TYPES; ++i) { - if (!strcmp(cpoint_type, cp_type[i])) { - cptype = i + 1; - break; - } - } - - if (cpoint == INVALID || cptype == NONE) - return -EINVAL; - - count = cpoint_count; - - return 0; -} - -static int recursive_loop(int a) -{ - char buf[1024]; - - memset(buf,0xFF,1024); - recur_count--; - if (!recur_count) - return 0; - else - return recursive_loop(a); -} - -void lkdtm_handler(void) -{ - printk(KERN_INFO "lkdtm : Crash point %s of type %s hit\n", - cpoint_name, cpoint_type); - --count; - - if (count == 0) { - switch (cptype) { - case NONE: - break; - case PANIC: - printk(KERN_INFO "lkdtm : PANIC\n"); - panic("dumptest"); - break; - case BUG: - printk(KERN_INFO "lkdtm : BUG\n"); - BUG(); - break; - case EXCEPTION: - printk(KERN_INFO "lkdtm : EXCEPTION\n"); - *((int *) 0) = 0; - break; - case LOOP: - printk(KERN_INFO "lkdtm : LOOP\n"); - for (;;); - break; - case OVERFLOW: - printk(KERN_INFO "lkdtm : OVERFLOW\n"); - (void) recursive_loop(0); - break; - default: - break; - } - count = cpoint_count; - } -} - -static int __init lkdtm_module_init(void) -{ - int ret; - - if (lkdtm_parse_commandline() == -EINVAL) { - printk(KERN_INFO "lkdtm : Invalid command\n"); - return -EINVAL; - } - - switch (cpoint) { - case INT_HARDWARE_ENTRY: - lkdtm.kp.symbol_name = "__do_IRQ"; - lkdtm.entry = (kprobe_opcode_t*) jp_do_irq; - break; - case INT_HW_IRQ_EN: - lkdtm.kp.symbol_name = "handle_IRQ_event"; - lkdtm.entry = (kprobe_opcode_t*) jp_handle_irq_event; - break; - case INT_TASKLET_ENTRY: - lkdtm.kp.symbol_name = "tasklet_action"; - lkdtm.entry = (kprobe_opcode_t*) jp_tasklet_action; - break; - case FS_DEVRW: - lkdtm.kp.symbol_name = "ll_rw_block"; - lkdtm.entry = (kprobe_opcode_t*) jp_ll_rw_block; - break; - case MEM_SWAPOUT: - lkdtm.kp.symbol_name = "shrink_inactive_list"; - lkdtm.entry = (kprobe_opcode_t*) jp_shrink_inactive_list; - break; - case TIMERADD: - lkdtm.kp.symbol_name = "hrtimer_start"; - lkdtm.entry = (kprobe_opcode_t*) jp_hrtimer_start; - break; - case SCSI_DISPATCH_CMD: - lkdtm.kp.symbol_name = "scsi_dispatch_cmd"; - lkdtm.entry = (kprobe_opcode_t*) jp_scsi_dispatch_cmd; - break; - case IDE_CORE_CP: -#ifdef CONFIG_IDE - lkdtm.kp.symbol_name = "generic_ide_ioctl"; - lkdtm.entry = (kprobe_opcode_t*) jp_generic_ide_ioctl; -#else - printk(KERN_INFO "lkdtm : Crash point not available\n"); -#endif - break; - default: - printk(KERN_INFO "lkdtm : Invalid Crash Point\n"); - break; - } - - if ((ret = register_jprobe(&lkdtm)) < 0) { - printk(KERN_INFO "lkdtm : Couldn't register jprobe\n"); - return ret; - } - - printk(KERN_INFO "lkdtm : Crash point %s of type %s registered\n", - cpoint_name, cpoint_type); - return 0; -} - -static void __exit lkdtm_module_exit(void) -{ - unregister_jprobe(&lkdtm); - printk(KERN_INFO "lkdtm : Crash point unregistered\n"); -} - -module_init(lkdtm_module_init); -module_exit(lkdtm_module_exit); - -MODULE_LICENSE("GPL"); |