x86: unify appropriate bits from dumpstack_32 and dumpstack_64
authorNeil Horman <nhorman@tuxdriver.com>
Thu, 23 Oct 2008 14:40:06 +0000 (10:40 -0400)
committerIngo Molnar <mingo@elte.hu>
Mon, 27 Oct 2008 18:21:19 +0000 (19:21 +0100)
Impact: cleanup

As promised, now that dumpstack_32 and dumpstack_64 have so many bits
in common, we should merge the in-sync bits into a common file, to
prevent them from diverging again.

This patch removes bits which are common between dumpstack_32.c and
dumpstack_64.c and places them in a common dumpstack.c which is built
for both 32 and 64 bit arches.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 Makefile       |    2
 arch/x86/kernel/Makefile       |    2
 arch/x86/kernel/Makefile       |    2
 arch/x86/kernel/Makefile       |    2
 arch/x86/kernel/Makefile       |    2
 arch/x86/kernel/Makefile       |    2
 arch/x86/kernel/dumpstack.c    |  319 +++++++++++++++++++++++++++++++++++++++++
 arch/x86/kernel/dumpstack.h    |   39 +++++
 arch/x86/kernel/dumpstack_32.c |  294 -------------------------------------
 arch/x86/kernel/dumpstack_64.c |  285 ------------------------------------
 5 files changed, 363 insertions(+), 576 deletions(-)

arch/x86/kernel/Makefile
arch/x86/kernel/dumpstack.c [new file with mode: 0644]
arch/x86/kernel/dumpstack.h [new file with mode: 0644]
arch/x86/kernel/dumpstack_32.c
arch/x86/kernel/dumpstack_64.c

index d7e5a58ee22f376c13caab451ac1dcf6d4e33b08..db3216a9d2b987d320eb3db7ed102c6f5ab0c312 100644 (file)
@@ -24,7 +24,7 @@ CFLAGS_tsc.o          := $(nostackp)
 
 obj-y                  := process_$(BITS).o signal_$(BITS).o entry_$(BITS).o
 obj-y                  += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
-obj-y                  += time_$(BITS).o ioport.o ldt.o
+obj-y                  += time_$(BITS).o ioport.o ldt.o dumpstack.o
 obj-y                  += setup.o i8259.o irqinit_$(BITS).o setup_percpu.o
 obj-$(CONFIG_X86_VISWS)        += visws_quirks.o
 obj-$(CONFIG_X86_32)   += probe_roms_32.o
diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
new file mode 100644 (file)
index 0000000..5962176
--- /dev/null
@@ -0,0 +1,319 @@
+/*
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *  Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
+ */
+#include <linux/kallsyms.h>
+#include <linux/kprobes.h>
+#include <linux/uaccess.h>
+#include <linux/utsname.h>
+#include <linux/hardirq.h>
+#include <linux/kdebug.h>
+#include <linux/module.h>
+#include <linux/ptrace.h>
+#include <linux/kexec.h>
+#include <linux/bug.h>
+#include <linux/nmi.h>
+#include <linux/sysfs.h>
+
+#include <asm/stacktrace.h>
+
+#include "dumpstack.h"
+
+int panic_on_unrecovered_nmi;
+unsigned int code_bytes = 64;
+int kstack_depth_to_print = 3 * STACKSLOTS_PER_LINE;
+static int die_counter;
+
+void printk_address(unsigned long address, int reliable)
+{
+       printk(" [<%p>] %s%pS\n", (void *) address,
+                       reliable ? "" : "? ", (void *) address);
+}
+
+/*
+ * x86-64 can have up to three kernel stacks:
+ * process stack
+ * interrupt stack
+ * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack
+ */
+
+static inline int valid_stack_ptr(struct thread_info *tinfo,
+                       void *p, unsigned int size, void *end)
+{
+       void *t = tinfo;
+       if (end) {
+               if (p < end && p >= (end-THREAD_SIZE))
+                       return 1;
+               else
+                       return 0;
+       }
+       return p > t && p < t + THREAD_SIZE - size;
+}
+
+unsigned long
+print_context_stack(struct thread_info *tinfo,
+               unsigned long *stack, unsigned long bp,
+               const struct stacktrace_ops *ops, void *data,
+               unsigned long *end)
+{
+       struct stack_frame *frame = (struct stack_frame *)bp;
+
+       while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) {
+               unsigned long addr;
+
+               addr = *stack;
+               if (__kernel_text_address(addr)) {
+                       if ((unsigned long) stack == bp + sizeof(long)) {
+                               ops->address(data, addr, 1);
+                               frame = frame->next_frame;
+                               bp = (unsigned long) frame;
+                       } else {
+                               ops->address(data, addr, bp == 0);
+                       }
+               }
+               stack++;
+       }
+       return bp;
+}
+
+
+static void
+print_trace_warning_symbol(void *data, char *msg, unsigned long symbol)
+{
+       printk(data);
+       print_symbol(msg, symbol);
+       printk("\n");
+}
+
+static void print_trace_warning(void *data, char *msg)
+{
+       printk("%s%s\n", (char *)data, msg);
+}
+
+static int print_trace_stack(void *data, char *name)
+{
+       printk("%s <%s> ", (char *)data, name);
+       return 0;
+}
+
+/*
+ * Print one address/symbol entries per line.
+ */
+static void print_trace_address(void *data, unsigned long addr, int reliable)
+{
+       touch_nmi_watchdog();
+       printk(data);
+       printk_address(addr, reliable);
+}
+
+static const struct stacktrace_ops print_trace_ops = {
+       .warning = print_trace_warning,
+       .warning_symbol = print_trace_warning_symbol,
+       .stack = print_trace_stack,
+       .address = print_trace_address,
+};
+
+void
+show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
+               unsigned long *stack, unsigned long bp, char *log_lvl)
+{
+       printk("%sCall Trace:\n", log_lvl);
+       dump_trace(task, regs, stack, bp, &print_trace_ops, log_lvl);
+}
+
+void show_trace(struct task_struct *task, struct pt_regs *regs,
+               unsigned long *stack, unsigned long bp)
+{
+       show_trace_log_lvl(task, regs, stack, bp, "");
+}
+
+void show_stack(struct task_struct *task, unsigned long *sp)
+{
+       show_stack_log_lvl(task, NULL, sp, 0, "");
+}
+
+/*
+ * The architecture-independent dump_stack generator
+ */
+void dump_stack(void)
+{
+       unsigned long bp = 0;
+       unsigned long stack;
+
+#ifdef CONFIG_FRAME_POINTER
+       if (!bp)
+               get_bp(bp);
+#endif
+
+       printk("Pid: %d, comm: %.20s %s %s %.*s\n",
+               current->pid, current->comm, print_tainted(),
+               init_utsname()->release,
+               (int)strcspn(init_utsname()->version, " "),
+               init_utsname()->version);
+       show_trace(NULL, NULL, &stack, bp);
+}
+EXPORT_SYMBOL(dump_stack);
+
+static raw_spinlock_t die_lock = __RAW_SPIN_LOCK_UNLOCKED;
+static int die_owner = -1;
+static unsigned int die_nest_count;
+
+unsigned __kprobes long oops_begin(void)
+{
+       int cpu;
+       unsigned long flags;
+
+       oops_enter();
+
+       /* racy, but better than risking deadlock. */
+       raw_local_irq_save(flags);
+       cpu = smp_processor_id();
+       if (!__raw_spin_trylock(&die_lock)) {
+               if (cpu == die_owner)
+                       /* nested oops. should stop eventually */;
+               else
+                       __raw_spin_lock(&die_lock);
+       }
+       die_nest_count++;
+       die_owner = cpu;
+       console_verbose();
+       bust_spinlocks(1);
+       return flags;
+}
+
+void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
+{
+       if (regs && kexec_should_crash(current))
+               crash_kexec(regs);
+
+       bust_spinlocks(0);
+       die_owner = -1;
+       add_taint(TAINT_DIE);
+       die_nest_count--;
+       if (!die_nest_count)
+               /* Nest count reaches zero, release the lock. */
+               __raw_spin_unlock(&die_lock);
+       raw_local_irq_restore(flags);
+       oops_exit();
+
+       if (!signr)
+               return;
+       if (in_interrupt())
+               panic("Fatal exception in interrupt");
+       if (panic_on_oops)
+               panic("Fatal exception");
+       do_exit(signr);
+}
+
+int __kprobes __die(const char *str, struct pt_regs *regs, long err)
+{
+#ifdef CONFIG_X86_32
+       unsigned short ss;
+       unsigned long sp;
+#endif
+       printk(KERN_EMERG "%s: %04lx [#%d] ", str, err & 0xffff, ++die_counter);
+#ifdef CONFIG_PREEMPT
+       printk("PREEMPT ");
+#endif
+#ifdef CONFIG_SMP
+       printk("SMP ");
+#endif
+#ifdef CONFIG_DEBUG_PAGEALLOC
+       printk("DEBUG_PAGEALLOC");
+#endif
+       printk("\n");
+       sysfs_printk_last_file();
+       if (notify_die(DIE_OOPS, str, regs, err,
+                       current->thread.trap_no, SIGSEGV) == NOTIFY_STOP)
+               return 1;
+
+       show_registers(regs);
+#ifdef CONFIG_X86_32
+       sp = (unsigned long) (&regs->sp);
+       savesegment(ss, ss);
+       if (user_mode(regs)) {
+               sp = regs->sp;
+               ss = regs->ss & 0xffff;
+       }
+       printk(KERN_EMERG "EIP: [<%08lx>] ", regs->ip);
+       print_symbol("%s", regs->ip);
+       printk(" SS:ESP %04x:%08lx\n", ss, sp);
+#else
+       /* Executive summary in case the oops scrolled away */
+       printk(KERN_ALERT "RIP ");
+       printk_address(regs->ip, 1);
+       printk(" RSP <%016lx>\n", regs->sp);
+#endif
+       return 0;
+}
+
+/*
+ * This is gone through when something in the kernel has done something bad
+ * and is about to be terminated:
+ */
+void die(const char *str, struct pt_regs *regs, long err)
+{
+       unsigned long flags = oops_begin();
+       int sig = SIGSEGV;
+
+       if (!user_mode_vm(regs))
+               report_bug(regs->ip, regs);
+
+       if (__die(str, regs, err))
+               sig = 0;
+       oops_end(flags, regs, sig);
+}
+
+void notrace __kprobes
+die_nmi(char *str, struct pt_regs *regs, int do_panic)
+{
+       unsigned long flags;
+
+       if (notify_die(DIE_NMIWATCHDOG, str, regs, 0, 2, SIGINT) == NOTIFY_STOP)
+               return;
+
+       /*
+        * We are in trouble anyway, lets at least try
+        * to get a message out.
+        */
+       flags = oops_begin();
+       printk(KERN_EMERG "%s", str);
+       printk(" on CPU%d, ip %08lx, registers:\n",
+               smp_processor_id(), regs->ip);
+       show_registers(regs);
+       oops_end(flags, regs, 0);
+       if (do_panic || panic_on_oops)
+               panic("Non maskable interrupt");
+       nmi_exit();
+       local_irq_enable();
+       do_exit(SIGBUS);
+}
+
+static int __init oops_setup(char *s)
+{
+       if (!s)
+               return -EINVAL;
+       if (!strcmp(s, "panic"))
+               panic_on_oops = 1;
+       return 0;
+}
+early_param("oops", oops_setup);
+
+static int __init kstack_setup(char *s)
+{
+       if (!s)
+               return -EINVAL;
+       kstack_depth_to_print = simple_strtoul(s, NULL, 0);
+       return 0;
+}
+early_param("kstack", kstack_setup);
+
+static int __init code_bytes_setup(char *s)
+{
+       code_bytes = simple_strtoul(s, NULL, 0);
+       if (code_bytes > 8192)
+               code_bytes = 8192;
+
+       return 1;
+}
+__setup("code_bytes=", code_bytes_setup);
diff --git a/arch/x86/kernel/dumpstack.h b/arch/x86/kernel/dumpstack.h
new file mode 100644 (file)
index 0000000..3119a80
--- /dev/null
@@ -0,0 +1,39 @@
+/*
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *  Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
+ */
+
+#ifndef DUMPSTACK_H
+#define DUMPSTACK_H
+
+#ifdef CONFIG_X86_32
+#define STACKSLOTS_PER_LINE 8
+#define get_bp(bp) asm("movl %%ebp, %0" : "=r" (bp) :)
+#else
+#define STACKSLOTS_PER_LINE 4
+#define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :)
+#endif
+
+extern unsigned long
+print_context_stack(struct thread_info *tinfo,
+               unsigned long *stack, unsigned long bp,
+               const struct stacktrace_ops *ops, void *data,
+               unsigned long *end);
+
+extern void
+show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
+               unsigned long *stack, unsigned long bp, char *log_lvl);
+
+extern void
+show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
+               unsigned long *sp, unsigned long bp, char *log_lvl);
+
+extern unsigned int code_bytes;
+extern int kstack_depth_to_print;
+
+/* The form of the top of the frame on the stack */
+struct stack_frame {
+       struct stack_frame *next_frame;
+       unsigned long return_address;
+};
+#endif
index f2046c5752d0b032ffd472329ef88f59c990e932..7b031b106ec8f65cb40ee4042eb8341c356e4a09 100644 (file)
 
 #include <asm/stacktrace.h>
 
-#define STACKSLOTS_PER_LINE 8
-#define get_bp(bp) asm("movl %%ebp, %0" : "=r" (bp) :)
-
-int panic_on_unrecovered_nmi;
-int kstack_depth_to_print = 3 * STACKSLOTS_PER_LINE;
-static unsigned int code_bytes = 64;
-static int die_counter;
-
-void printk_address(unsigned long address, int reliable)
-{
-       printk(" [<%p>] %s%pS\n", (void *) address,
-                       reliable ? "" : "? ", (void *) address);
-}
-
-static inline int valid_stack_ptr(struct thread_info *tinfo,
-                       void *p, unsigned int size, void *end)
-{
-       void *t = tinfo;
-       if (end) {
-               if (p < end && p >= (end-THREAD_SIZE))
-                       return 1;
-               else
-                       return 0;
-       }
-       return p > t && p < t + THREAD_SIZE - size;
-}
-
-/* The form of the top of the frame on the stack */
-struct stack_frame {
-       struct stack_frame *next_frame;
-       unsigned long return_address;
-};
-
-static inline unsigned long
-print_context_stack(struct thread_info *tinfo,
-               unsigned long *stack, unsigned long bp,
-               const struct stacktrace_ops *ops, void *data,
-               unsigned long *end)
-{
-       struct stack_frame *frame = (struct stack_frame *)bp;
-
-       while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) {
-               unsigned long addr;
-
-               addr = *stack;
-               if (__kernel_text_address(addr)) {
-                       if ((unsigned long) stack == bp + sizeof(long)) {
-                               ops->address(data, addr, 1);
-                               frame = frame->next_frame;
-                               bp = (unsigned long) frame;
-                       } else {
-                               ops->address(data, addr, bp == 0);
-                       }
-               }
-               stack++;
-       }
-       return bp;
-}
+#include "dumpstack.h"
 
 void dump_trace(struct task_struct *task, struct pt_regs *regs,
                unsigned long *stack, unsigned long bp,
@@ -119,57 +62,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 }
 EXPORT_SYMBOL(dump_trace);
 
-static void
-print_trace_warning_symbol(void *data, char *msg, unsigned long symbol)
-{
-       printk(data);
-       print_symbol(msg, symbol);
-       printk("\n");
-}
-
-static void print_trace_warning(void *data, char *msg)
-{
-       printk("%s%s\n", (char *)data, msg);
-}
-
-static int print_trace_stack(void *data, char *name)
-{
-       printk("%s <%s> ", (char *)data, name);
-       return 0;
-}
-
-/*
- * Print one address/symbol entries per line.
- */
-static void print_trace_address(void *data, unsigned long addr, int reliable)
-{
-       touch_nmi_watchdog();
-       printk(data);
-       printk_address(addr, reliable);
-}
-
-static const struct stacktrace_ops print_trace_ops = {
-       .warning = print_trace_warning,
-       .warning_symbol = print_trace_warning_symbol,
-       .stack = print_trace_stack,
-       .address = print_trace_address,
-};
-
-static void
-show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
-               unsigned long *stack, unsigned long bp, char *log_lvl)
-{
-       printk("%sCall Trace:\n", log_lvl);
-       dump_trace(task, regs, stack, bp, &print_trace_ops, log_lvl);
-}
-
-void show_trace(struct task_struct *task, struct pt_regs *regs,
-               unsigned long *stack, unsigned long bp)
-{
-       show_trace_log_lvl(task, regs, stack, bp, "");
-}
-
-static void
+void
 show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
                unsigned long *sp, unsigned long bp, char *log_lvl)
 {
@@ -196,33 +89,6 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
        show_trace_log_lvl(task, regs, sp, bp, log_lvl);
 }
 
-void show_stack(struct task_struct *task, unsigned long *sp)
-{
-       show_stack_log_lvl(task, NULL, sp, 0, "");
-}
-
-/*
- * The architecture-independent dump_stack generator
- */
-void dump_stack(void)
-{
-       unsigned long bp = 0;
-       unsigned long stack;
-
-#ifdef CONFIG_FRAME_POINTER
-       if (!bp)
-               get_bp(bp);
-#endif
-
-       printk("Pid: %d, comm: %.20s %s %s %.*s\n",
-               current->pid, current->comm, print_tainted(),
-               init_utsname()->release,
-               (int)strcspn(init_utsname()->version, " "),
-               init_utsname()->version);
-       show_trace(NULL, NULL, &stack, bp);
-}
-
-EXPORT_SYMBOL(dump_stack);
 
 void show_registers(struct pt_regs *regs)
 {
@@ -283,159 +149,3 @@ int is_valid_bugaddr(unsigned long ip)
        return ud2 == 0x0b0f;
 }
 
-static raw_spinlock_t die_lock = __RAW_SPIN_LOCK_UNLOCKED;
-static int die_owner = -1;
-static unsigned int die_nest_count;
-
-unsigned __kprobes long oops_begin(void)
-{
-       int cpu;
-       unsigned long flags;
-
-       oops_enter();
-
-       /* racy, but better than risking deadlock. */
-       raw_local_irq_save(flags);
-       cpu = smp_processor_id();
-       if (!__raw_spin_trylock(&die_lock)) {
-               if (cpu == die_owner)
-                       /* nested oops. should stop eventually */;
-               else
-                       __raw_spin_lock(&die_lock);
-       }
-       die_nest_count++;
-       die_owner = cpu;
-       console_verbose();
-       bust_spinlocks(1);
-       return flags;
-}
-
-void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
-{
-       if (regs && kexec_should_crash(current))
-               crash_kexec(regs);
-
-       bust_spinlocks(0);
-       die_owner = -1;
-       add_taint(TAINT_DIE);
-       die_nest_count--;
-       if (!die_nest_count)
-               /* Nest count reaches zero, release the lock. */
-               __raw_spin_unlock(&die_lock);
-       raw_local_irq_restore(flags);
-       oops_exit();
-
-       if (!signr)
-               return;
-       if (in_interrupt())
-               panic("Fatal exception in interrupt");
-       if (panic_on_oops)
-               panic("Fatal exception");
-       do_exit(signr);
-}
-
-int __kprobes __die(const char *str, struct pt_regs *regs, long err)
-{
-       unsigned short ss;
-       unsigned long sp;
-
-       printk(KERN_EMERG "%s: %04lx [#%d] ", str, err & 0xffff, ++die_counter);
-#ifdef CONFIG_PREEMPT
-       printk("PREEMPT ");
-#endif
-#ifdef CONFIG_SMP
-       printk("SMP ");
-#endif
-#ifdef CONFIG_DEBUG_PAGEALLOC
-       printk("DEBUG_PAGEALLOC");
-#endif
-       printk("\n");
-       sysfs_printk_last_file();
-       if (notify_die(DIE_OOPS, str, regs, err,
-                       current->thread.trap_no, SIGSEGV) == NOTIFY_STOP)
-               return 1;
-
-       show_registers(regs);
-       /* Executive summary in case the oops scrolled away */
-       sp = (unsigned long) (&regs->sp);
-       savesegment(ss, ss);
-       if (user_mode(regs)) {
-               sp = regs->sp;
-               ss = regs->ss & 0xffff;
-       }
-       printk(KERN_EMERG "EIP: [<%08lx>] ", regs->ip);
-       print_symbol("%s", regs->ip);
-       printk(" SS:ESP %04x:%08lx\n", ss, sp);
-       return 0;
-}
-
-/*
- * This is gone through when something in the kernel has done something bad
- * and is about to be terminated:
- */
-void die(const char *str, struct pt_regs *regs, long err)
-{
-       unsigned long flags = oops_begin();
-       int sig = SIGSEGV;
-
-       if (!user_mode_vm(regs))
-               report_bug(regs->ip, regs);
-
-       if (__die(str, regs, err))
-               sig = 0;
-       oops_end(flags, regs, sig);
-}
-
-void notrace __kprobes
-die_nmi(char *str, struct pt_regs *regs, int do_panic)
-{
-       unsigned long flags;
-
-       if (notify_die(DIE_NMIWATCHDOG, str, regs, 0, 2, SIGINT) == NOTIFY_STOP)
-               return;
-
-       /*
-        * We are in trouble anyway, lets at least try
-        * to get a message out.
-        */
-       flags = oops_begin();
-       printk(KERN_EMERG "%s", str);
-       printk(" on CPU%d, ip %08lx, registers:\n",
-               smp_processor_id(), regs->ip);
-       show_registers(regs);
-       oops_end(flags, regs, 0);
-       if (do_panic || panic_on_oops)
-               panic("Non maskable interrupt");
-       nmi_exit();
-       local_irq_enable();
-       do_exit(SIGBUS);
-}
-
-static int __init oops_setup(char *s)
-{
-       if (!s)
-               return -EINVAL;
-       if (!strcmp(s, "panic"))
-               panic_on_oops = 1;
-       return 0;
-}
-early_param("oops", oops_setup);
-
-static int __init kstack_setup(char *s)
-{
-       if (!s)
-               return -EINVAL;
-       kstack_depth_to_print = simple_strtoul(s, NULL, 0);
-       return 0;
-}
-early_param("kstack", kstack_setup);
-
-static int __init code_bytes_setup(char *s)
-{
-       code_bytes = simple_strtoul(s, NULL, 0);
-       if (code_bytes > 8192)
-               code_bytes = 8192;
-
-       return 1;
-}
-__setup("code_bytes=", code_bytes_setup);
index 28c67aae55622be638b9f77b4bb9baf70f791bf9..33ff10287a5d7b29162068c4d4f6d2eb141724db 100644 (file)
 
 #include <asm/stacktrace.h>
 
-#define STACKSLOTS_PER_LINE 4
-#define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :)
-
-int panic_on_unrecovered_nmi;
-int kstack_depth_to_print = 3 * STACKSLOTS_PER_LINE;
-static unsigned int code_bytes = 64;
-static int die_counter;
-
-void printk_address(unsigned long address, int reliable)
-{
-       printk(" [<%p>] %s%pS\n", (void *) address,
-                       reliable ? "" : "? ", (void *) address);
-}
+#include "dumpstack.h"
 
 static unsigned long *in_exception_stack(unsigned cpu, unsigned long stack,
                                        unsigned *usedp, char **idp)
@@ -113,51 +101,6 @@ static unsigned long *in_exception_stack(unsigned cpu, unsigned long stack,
  * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack
  */
 
-static inline int valid_stack_ptr(struct thread_info *tinfo,
-                       void *p, unsigned int size, void *end)
-{
-       void *t = tinfo;
-       if (end) {
-               if (p < end && p >= (end-THREAD_SIZE))
-                       return 1;
-               else
-                       return 0;
-       }
-       return p > t && p < t + THREAD_SIZE - size;
-}
-
-/* The form of the top of the frame on the stack */
-struct stack_frame {
-       struct stack_frame *next_frame;
-       unsigned long return_address;
-};
-
-static inline unsigned long
-print_context_stack(struct thread_info *tinfo,
-               unsigned long *stack, unsigned long bp,
-               const struct stacktrace_ops *ops, void *data,
-               unsigned long *end)
-{
-       struct stack_frame *frame = (struct stack_frame *)bp;
-
-       while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) {
-               unsigned long addr;
-
-               addr = *stack;
-               if (__kernel_text_address(addr)) {
-                       if ((unsigned long) stack == bp + sizeof(long)) {
-                               ops->address(data, addr, 1);
-                               frame = frame->next_frame;
-                               bp = (unsigned long) frame;
-                       } else {
-                               ops->address(data, addr, bp == 0);
-                       }
-               }
-               stack++;
-       }
-       return bp;
-}
-
 void dump_trace(struct task_struct *task, struct pt_regs *regs,
                unsigned long *stack, unsigned long bp,
                const struct stacktrace_ops *ops, void *data)
@@ -248,57 +191,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 }
 EXPORT_SYMBOL(dump_trace);
 
-static void
-print_trace_warning_symbol(void *data, char *msg, unsigned long symbol)
-{
-       printk(data);
-       print_symbol(msg, symbol);
-       printk("\n");
-}
-
-static void print_trace_warning(void *data, char *msg)
-{
-       printk("%s%s\n", (char *)data, msg);
-}
-
-static int print_trace_stack(void *data, char *name)
-{
-       printk("%s <%s> ", (char *)data, name);
-       return 0;
-}
-
-/*
- * Print one address/symbol entries per line.
- */
-static void print_trace_address(void *data, unsigned long addr, int reliable)
-{
-       touch_nmi_watchdog();
-       printk(data);
-       printk_address(addr, reliable);
-}
-
-static const struct stacktrace_ops print_trace_ops = {
-       .warning = print_trace_warning,
-       .warning_symbol = print_trace_warning_symbol,
-       .stack = print_trace_stack,
-       .address = print_trace_address,
-};
-
-static void
-show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
-               unsigned long *stack, unsigned long bp, char *log_lvl)
-{
-       printk("%sCall Trace:\n", log_lvl);
-       dump_trace(task, regs, stack, bp, &print_trace_ops, log_lvl);
-}
-
-void show_trace(struct task_struct *task, struct pt_regs *regs,
-               unsigned long *stack, unsigned long bp)
-{
-       show_trace_log_lvl(task, regs, stack, bp, "");
-}
-
-static void
+void
 show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
                unsigned long *sp, unsigned long bp, char *log_lvl)
 {
@@ -342,33 +235,6 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
        show_trace_log_lvl(task, regs, sp, bp, log_lvl);
 }
 
-void show_stack(struct task_struct *task, unsigned long *sp)
-{
-       show_stack_log_lvl(task, NULL, sp, 0, "");
-}
-
-/*
- * The architecture-independent dump_stack generator
- */
-void dump_stack(void)
-{
-       unsigned long bp = 0;
-       unsigned long stack;
-
-#ifdef CONFIG_FRAME_POINTER
-       if (!bp)
-               get_bp(bp);
-#endif
-
-       printk("Pid: %d, comm: %.20s %s %s %.*s\n",
-               current->pid, current->comm, print_tainted(),
-               init_utsname()->release,
-               (int)strcspn(init_utsname()->version, " "),
-               init_utsname()->version);
-       show_trace(NULL, NULL, &stack, bp);
-}
-EXPORT_SYMBOL(dump_stack);
-
 void show_registers(struct pt_regs *regs)
 {
        int i;
@@ -429,150 +295,3 @@ int is_valid_bugaddr(unsigned long ip)
        return ud2 == 0x0b0f;
 }
 
-static raw_spinlock_t die_lock = __RAW_SPIN_LOCK_UNLOCKED;
-static int die_owner = -1;
-static unsigned int die_nest_count;
-
-unsigned __kprobes long oops_begin(void)
-{
-       int cpu;
-       unsigned long flags;
-
-       oops_enter();
-
-       /* racy, but better than risking deadlock. */
-       raw_local_irq_save(flags);
-       cpu = smp_processor_id();
-       if (!__raw_spin_trylock(&die_lock)) {
-               if (cpu == die_owner)
-                       /* nested oops. should stop eventually */;
-               else
-                       __raw_spin_lock(&die_lock);
-       }
-       die_nest_count++;
-       die_owner = cpu;
-       console_verbose();
-       bust_spinlocks(1);
-       return flags;
-}
-
-void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
-{
-       if (regs && kexec_should_crash(current))
-               crash_kexec(regs);
-
-       bust_spinlocks(0);
-       die_owner = -1;
-       add_taint(TAINT_DIE);
-       die_nest_count--;
-       if (!die_nest_count)
-               /* Nest count reaches zero, release the lock. */
-               __raw_spin_unlock(&die_lock);
-       raw_local_irq_restore(flags);
-       oops_exit();
-
-       if (!signr)
-               return;
-       if (in_interrupt())
-               panic("Fatal exception in interrupt");
-       if (panic_on_oops)
-               panic("Fatal exception");
-       do_exit(signr);
-}
-
-int __kprobes __die(const char *str, struct pt_regs *regs, long err)
-{
-       printk(KERN_EMERG "%s: %04lx [#%d] ", str, err & 0xffff, ++die_counter);
-#ifdef CONFIG_PREEMPT
-       printk("PREEMPT ");
-#endif
-#ifdef CONFIG_SMP
-       printk("SMP ");
-#endif
-#ifdef CONFIG_DEBUG_PAGEALLOC
-       printk("DEBUG_PAGEALLOC");
-#endif
-       printk("\n");
-       sysfs_printk_last_file();
-       if (notify_die(DIE_OOPS, str, regs, err,
-                       current->thread.trap_no, SIGSEGV) == NOTIFY_STOP)
-               return 1;
-
-       show_registers(regs);
-       /* Executive summary in case the oops scrolled away */
-       printk(KERN_ALERT "RIP ");
-       printk_address(regs->ip, 1);
-       printk(" RSP <%016lx>\n", regs->sp);
-       return 0;
-}
-
-/*
- * This is gone through when something in the kernel has done something bad
- * and is about to be terminated:
- */
-void die(const char *str, struct pt_regs *regs, long err)
-{
-       unsigned long flags = oops_begin();
-       int sig = SIGSEGV;
-
-       if (!user_mode_vm(regs))
-               report_bug(regs->ip, regs);
-
-       if (__die(str, regs, err))
-               sig = 0;
-       oops_end(flags, regs, sig);
-}
-
-void notrace __kprobes
-die_nmi(char *str, struct pt_regs *regs, int do_panic)
-{
-       unsigned long flags;
-
-       if (notify_die(DIE_NMIWATCHDOG, str, regs, 0, 2, SIGINT) == NOTIFY_STOP)
-               return;
-
-       /*
-        * We are in trouble anyway, lets at least try
-        * to get a message out.
-        */
-       flags = oops_begin();
-       printk(KERN_EMERG "%s", str);
-       printk(" on CPU%d, ip %08lx, registers:\n",
-               smp_processor_id(), regs->ip);
-       show_registers(regs);
-       oops_end(flags, regs, 0);
-       if (do_panic || panic_on_oops)
-               panic("Non maskable interrupt");
-       nmi_exit();
-       local_irq_enable();
-       do_exit(SIGBUS);
-}
-
-static int __init oops_setup(char *s)
-{
-       if (!s)
-               return -EINVAL;
-       if (!strcmp(s, "panic"))
-               panic_on_oops = 1;
-       return 0;
-}
-early_param("oops", oops_setup);
-
-static int __init kstack_setup(char *s)
-{
-       if (!s)
-               return -EINVAL;
-       kstack_depth_to_print = simple_strtoul(s, NULL, 0);
-       return 0;
-}
-early_param("kstack", kstack_setup);
-
-static int __init code_bytes_setup(char *s)
-{
-       code_bytes = simple_strtoul(s, NULL, 0);
-       if (code_bytes > 8192)
-               code_bytes = 8192;
-
-       return 1;
-}
-__setup("code_bytes=", code_bytes_setup);