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Commit | Line | Data |
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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 | } |