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generated by cgit v1.2.2 (git 2.25.0) at 2025-10-02 15:26:34 -0400
itle='author Atsushi Nemoto <anemo@mba.ocn.ne.jp> 2006-09-28 06:15:33 -0400 committer Ralf Baechle <ralf@linux-mips.org> 2006-10-01 18:16:58 -0400 [MIPS] Stacktrace build-fix and improvement' href='/cgit/cgit.cgi/litmus-rt-ext-res.git/commit/arch/mips/kernel/stacktrace.c?id=23126692e30ec22760e0ef932c3c2fff00d440bb'>23126692e30e 
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/*
 * Stack trace management functions
 *
 *  Copyright (C) 2006 Atsushi Nemoto <anemo@mba.ocn.ne.jp>
 */
#include <linux/sched.h>
#include <linux/stacktrace.h>
#include <linux/export.h>
#include <asm/stacktrace.h>

/*
 * Save stack-backtrace addresses into a stack_trace buffer:
 */
static void save_raw_context_stack(struct stack_trace *trace,
	unsigned long reg29)
{
	unsigned long *sp = (unsigned long *)reg29;
	unsigned long addr;

	while (!kstack_end(sp)) {
		addr = *sp++;
		if (__kernel_text_address(addr)) {
			if (trace->skip > 0)
				trace->skip--;
			else
				trace->entries[trace->nr_entries++] = addr;
			if (trace->nr_entries >= trace->max_entries)
				break;
		}
	}
}

static void save_context_stack(struct stack_trace *trace,
	struct task_struct *tsk, struct pt_regs *regs)
{
	unsigned long sp = regs->regs[29];
#ifdef CONFIG_KALLSYMS
	unsigned long ra = regs->regs[31];
	unsigned long pc = regs->cp0_epc;