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authorStephen Rothwell <sfr@canb.auug.org.au>2008-06-13 15:22:26 +1000
committerStephen Rothwell <sfr@canb.auug.org.au>2008-06-13 15:22:26 +1000
commit3e523b092e2aa3ee8a66bd021bec953022737e48 (patch)
tree8802f0fc190f7e07d75df40fa7c9d10e9eb09c76 /drivers
parent63be7da2a8cf1165ed0c8bee13fe23657c7ba046 (diff)
parent1caff9ba52970a3492bfe8a1b9e26291d34259c5 (diff)
Merge commit 'tests/master'
Conflicts: lib/Kconfig.debug
Diffstat (limited to 'drivers')
-rw-r--r--drivers/misc/Makefile1
-rw-r--r--drivers/misc/lkdtm.c345
2 files changed, 0 insertions, 346 deletions
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index a6dac6a2e7e5..c818320d1dc7 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -14,7 +14,6 @@ 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");