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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344// SPDX-License-Identifier: GPL-2.0-only/* * Stack trace management functions * * Copyright (C) 2009-2021 Helge Deller <deller@gmx.de> * based on arch/x86/kernel/stacktrace.c by Ingo Molnar <mingo@redhat.com> * and parisc unwind functions by Randolph Chung <tausq@debian.org> * * TODO: Userspace stacktrace (CONFIG_USER_STACKTRACE_SUPPORT) */#include <linux/kernel.h>#include <linux/stacktrace.h>
#include <asm/unwind.h>
static void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, bool (*fn)(void *, unsigned long), void *cookie){ struct unwind_frame_info info;
unwind_frame_init_task(&info, task, NULL); while (1) { if (unwind_once(&info) < 0 || info.ip == 0) break;
if (__kernel_text_address(info.ip)) if (!fn(cookie, info.ip)) break; }}
void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie, struct task_struct *task, struct pt_regs *regs){ walk_stackframe(task, regs, consume_entry, cookie);}
int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry, void *cookie, struct task_struct *task){ walk_stackframe(task, NULL, consume_entry, cookie); return 1;}