Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 /*
  2  * kernel/stacktrace.c
  3  *
  4  * Stack trace management functions
  5  *
  6  *  Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
  7  */
  8 #include <linux/sched.h>
  9 #include <linux/kernel.h>
 10 #include <linux/module.h>
 11 #include <linux/kallsyms.h>
 12 #include <linux/stacktrace.h>
 13 
 14 void print_stack_trace(struct stack_trace *trace, int spaces)
 15 {
 16         int i;
 17 
 18         if (WARN_ON(!trace->entries))
 19                 return;
 20 
 21         for (i = 0; i < trace->nr_entries; i++) {
 22                 printk("%*c", 1 + spaces, ' ');
 23                 print_ip_sym(trace->entries[i]);
 24         }
 25 }
 26 EXPORT_SYMBOL_GPL(print_stack_trace);
 27 
 28 /*
 29  * Architectures that do not implement save_stack_trace_tsk get this
 30  * weak alias and a once-per-bootup warning (whenever this facility
 31  * is utilized - for example by procfs):
 32  */
 33 __weak void
 34 save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
 35 {
 36         WARN_ONCE(1, KERN_INFO "save_stack_trace_tsk() not implemented yet.\n");
 37 }
 38 
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