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/*

* kernel/stacktrace.c

*

* Stack trace management functions

*

* Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>

*/

#include <linux/sched.h>

#include <linux/kernel.h>

#include <linux/export.h>

#include <linux/kallsyms.h>

#include <linux/stacktrace.h>

void print_stack_trace(struct stack_trace *trace, int spaces)

{

int i;

if (WARN_ON(!trace->entries))

return;

for (i = 0; i < trace->nr_entries; i++) {

printk("%*c", 1 + spaces, ' ');

print_ip_sym(trace->entries[i]);

}

}

EXPORT_SYMBOL_GPL(print_stack_trace);

/*

* Architectures that do not implement save_stack_trace_tsk or

* save_stack_trace_regs get this weak alias and a once-per-bootup warning

* (whenever this facility is utilized - for example by procfs):

*/

__weak void

save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)

{

WARN_ONCE(1, KERN_INFO "save_stack_trace_tsk() not implemented yet.\n");

}

__weak void

save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace)

{

WARN_ONCE(1, KERN_INFO "save_stack_trace_regs() not implemented yet.\n");

}