release/src-rt-6.x.4708/linux/linux-2.6.36/arch/microblaze/kernel/stacktrace.c

   1 /*
   2  * Stack trace support for Microblaze.
   3  *
   4  * Copyright (C) 2009 Michal Simek <monstr@monstr.eu>
   5  * Copyright (C) 2009 PetaLogix
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License. See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11
  12 #include <linux/sched.h>
  13 #include <linux/stacktrace.h>
  14 #include <linux/thread_info.h>
  15 #include <linux/ptrace.h>
  16 #include <linux/module.h>
  17 #include <asm/unwind.h>
  18
  19 void save_stack_trace(struct stack_trace *trace)
  20 {
  21         /* Exclude our helper functions from the trace*/
  22         trace->skip += 2;
  23         microblaze_unwind(NULL, trace);
  24 }
  25 EXPORT_SYMBOL_GPL(save_stack_trace);
  26
  27 void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
  28 {
  29         microblaze_unwind(tsk, trace);
  30 }
  31 EXPORT_SYMBOL_GPL(save_stack_trace_tsk);