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https://github.com/torvalds/linux
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c624d33f61
Add weak symbol of save_stack_trace_regs() as same as save_stack_trace_tsk() since that is not implemented except x86 yet. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: yrl.pp-manager.tt@hitachi.com Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Namhyung Kim <namhyung@gmail.com> Link: http://lkml.kernel.org/r/20110608070927.17777.37895.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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* kernel/stacktrace.c
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*
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* Stack trace management functions
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*
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* Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
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*/
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/kallsyms.h>
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#include <linux/stacktrace.h>
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void print_stack_trace(struct stack_trace *trace, int spaces)
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{
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int i;
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if (WARN_ON(!trace->entries))
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return;
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for (i = 0; i < trace->nr_entries; i++) {
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printk("%*c", 1 + spaces, ' ');
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print_ip_sym(trace->entries[i]);
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}
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}
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EXPORT_SYMBOL_GPL(print_stack_trace);
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/*
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* Architectures that do not implement save_stack_trace_tsk or
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* save_stack_trace_regs get this weak alias and a once-per-bootup warning
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* (whenever this facility is utilized - for example by procfs):
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*/
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__weak void
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save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
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{
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WARN_ONCE(1, KERN_INFO "save_stack_trace_tsk() not implemented yet.\n");
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}
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__weak void
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save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace)
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{
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WARN_ONCE(1, KERN_INFO "save_stack_trace_regs() not implemented yet.\n");
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}
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