x86: Eliminate bp argument from the stack tracing routines

[mv-sheeva.git] / arch / x86 / kernel / dumpstack_64.c

diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 6a340485249a965f29686ac84117458d6cb72be6..64101335de19aad09ec03d75dea8260b28051747 100644 (file)
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -139,8 +139,8 @@ fixup_bp_irq_link(unsigned long bp, unsigned long *stack,
  * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack
  */
 
-void dump_trace(struct task_struct *task, struct pt_regs *regs,
-               unsigned long *stack, unsigned long bp,
+void dump_trace(struct task_struct *task,
+               struct pt_regs *regs, unsigned long *stack,
                const struct stacktrace_ops *ops, void *data)
 {
        const unsigned cpu = get_cpu();
@@ -149,6 +149,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
        unsigned used = 0;
        struct thread_info *tinfo;
        int graph = 0;
+       unsigned long bp;
 
        if (!task)
                task = current;
@@ -160,18 +161,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
                        stack = (unsigned long *)task->thread.sp;
        }
 
-#ifdef CONFIG_FRAME_POINTER
-       if (!bp) {
-               if (task == current) {
-                       /* Grab bp right from our regs */
-                       get_bp(bp);
-               } else {
-                       /* bp is the last reg pushed by switch_to */
-                       bp = *(unsigned long *) task->thread.sp;
-               }
-       }
-#endif
-
+       bp = stack_frame(task, regs);
        /*
         * Print function call entries in all stacks, starting at the
         * current stack address. If the stacks consist of nested
@@ -235,7 +225,7 @@ EXPORT_SYMBOL(dump_trace);
 
 void
 show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
-                  unsigned long *sp, unsigned long bp, char *log_lvl)
+                  unsigned long *sp, char *log_lvl)
 {
        unsigned long *irq_stack_end;
        unsigned long *irq_stack;
@@ -279,7 +269,7 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
        preempt_enable();
 
        printk(KERN_CONT "\n");
-       show_trace_log_lvl(task, regs, sp, bp, log_lvl);
+       show_trace_log_lvl(task, regs, sp, log_lvl);
 }
 
 void show_registers(struct pt_regs *regs)
@@ -308,7 +298,7 @@ void show_registers(struct pt_regs *regs)
 
                printk(KERN_EMERG "Stack:\n");
                show_stack_log_lvl(NULL, regs, (unsigned long *)sp,
-                               regs->bp, KERN_EMERG);
+                                  KERN_EMERG);
 
                printk(KERN_EMERG "Code: ");