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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
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ab1b6f03a1
Simplify the stacktrace code: - remove the unused task argument to save_stack_trace, it's always current - remove the all_contexts flag, it's alwasy 0 Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Andi Kleen <ak@suse.de> Cc: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/*
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* arch/x86_64/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/stacktrace.h>
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#include <linux/module.h>
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#include <asm/stacktrace.h>
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static void save_stack_warning(void *data, char *msg)
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{
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}
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static void
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save_stack_warning_symbol(void *data, char *msg, unsigned long symbol)
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{
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}
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static int save_stack_stack(void *data, char *name)
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{
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return -1;
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}
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static void save_stack_address(void *data, unsigned long addr)
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{
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struct stack_trace *trace = (struct stack_trace *)data;
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if (trace->skip > 0) {
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trace->skip--;
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return;
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}
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if (trace->nr_entries < trace->max_entries)
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trace->entries[trace->nr_entries++] = addr;
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}
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static struct stacktrace_ops save_stack_ops = {
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.warning = save_stack_warning,
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.warning_symbol = save_stack_warning_symbol,
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.stack = save_stack_stack,
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.address = save_stack_address,
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};
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/*
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* Save stack-backtrace addresses into a stack_trace buffer.
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*/
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void save_stack_trace(struct stack_trace *trace)
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{
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dump_trace(current, NULL, NULL, &save_stack_ops, trace);
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if (trace->nr_entries < trace->max_entries)
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trace->entries[trace->nr_entries++] = ULONG_MAX;
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}
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EXPORT_SYMBOL(save_stack_trace);
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