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Diffstat (limited to 'ANDROID_3.4.5/arch/x86/kernel/dumpstack.c')
-rw-r--r--ANDROID_3.4.5/arch/x86/kernel/dumpstack.c329
1 files changed, 0 insertions, 329 deletions
diff --git a/ANDROID_3.4.5/arch/x86/kernel/dumpstack.c b/ANDROID_3.4.5/arch/x86/kernel/dumpstack.c
deleted file mode 100644
index 1b81839b..00000000
--- a/ANDROID_3.4.5/arch/x86/kernel/dumpstack.c
+++ /dev/null
@@ -1,329 +0,0 @@
-/*
- * 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/ftrace.h>
-#include <linux/kexec.h>
-#include <linux/bug.h>
-#include <linux/nmi.h>
-#include <linux/sysfs.h>
-
-#include <asm/stacktrace.h>
-
-
-int panic_on_unrecovered_nmi;
-int panic_on_io_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%pB\n", (void *) address,
- reliable ? "" : "? ", (void *) address);
-}
-
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-static void
-print_ftrace_graph_addr(unsigned long addr, void *data,
- const struct stacktrace_ops *ops,
- struct thread_info *tinfo, int *graph)
-{
- struct task_struct *task;
- unsigned long ret_addr;
- int index;
-
- if (addr != (unsigned long)return_to_handler)
- return;
-
- task = tinfo->task;
- index = task->curr_ret_stack;
-
- if (!task->ret_stack || index < *graph)
- return;
-
- index -= *graph;
- ret_addr = task->ret_stack[index].ret;
-
- ops->address(data, ret_addr, 1);
-
- (*graph)++;
-}
-#else
-static inline void
-print_ftrace_graph_addr(unsigned long addr, void *data,
- const struct stacktrace_ops *ops,
- struct thread_info *tinfo, int *graph)
-{ }
-#endif
-
-/*
- * 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, int *graph)
-{
- 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, 0);
- }
- print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
- }
- stack++;
- }
- return bp;
-}
-EXPORT_SYMBOL_GPL(print_context_stack);
-
-unsigned long
-print_context_stack_bp(struct thread_info *tinfo,
- unsigned long *stack, unsigned long bp,
- const struct stacktrace_ops *ops, void *data,
- unsigned long *end, int *graph)
-{
- struct stack_frame *frame = (struct stack_frame *)bp;
- unsigned long *ret_addr = &frame->return_address;
-
- while (valid_stack_ptr(tinfo, ret_addr, sizeof(*ret_addr), end)) {
- unsigned long addr = *ret_addr;
-
- if (!__kernel_text_address(addr))
- break;
-
- ops->address(data, addr, 1);
- frame = frame->next_frame;
- ret_addr = &frame->return_address;
- print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
- }
-
- return (unsigned long)frame;
-}
-EXPORT_SYMBOL_GPL(print_context_stack_bp);
-
-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 = {
- .stack = print_trace_stack,
- .address = print_trace_address,
- .walk_stack = print_context_stack,
-};
-
-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;
- unsigned long stack;
-
- bp = stack_frame(current, NULL);
- 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 arch_spinlock_t die_lock = __ARCH_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 (!arch_spin_trylock(&die_lock)) {
- if (cpu == die_owner)
- /* nested oops. should stop eventually */;
- else
- arch_spin_lock(&die_lock);
- }
- die_nest_count++;
- die_owner = cpu;
- console_verbose();
- bust_spinlocks(1);
- return flags;
-}
-EXPORT_SYMBOL_GPL(oops_begin);
-
-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. */
- arch_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_DEFAULT
- "%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");
- if (notify_die(DIE_OOPS, str, regs, err,
- current->thread.trap_nr, SIGSEGV) == NOTIFY_STOP)
- return 1;
-
- show_registers(regs);
-#ifdef CONFIG_X86_32
- if (user_mode_vm(regs)) {
- sp = regs->sp;
- ss = regs->ss & 0xffff;
- } else {
- sp = kernel_stack_pointer(regs);
- savesegment(ss, ss);
- }
- 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);
-}
-
-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);