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review.trustedfirmware.org / hafnium / third_party / linux / 0f672f6c0b52b7b0700b0915c72b540721af4465 / . / arch / s390 / kernel / stacktrace.c
blob: f8fc4f8aef9b1585252a25532d8d19f4498c3984 [file] [log] [blame]
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Stack trace management functions
4 *
5 * Copyright IBM Corp. 2006
6 * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
7 */
8
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]9#include <linux/stacktrace.h>
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]10#include <asm/stacktrace.h>
11#include <asm/unwind.h>
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]12
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]13void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie,
14 struct task_struct *task, struct pt_regs *regs)
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]15{
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]16 struct unwind_state state;
17 unsigned long addr;
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]18
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]19 unwind_for_each_frame(&state, task, regs, 0) {
20 addr = unwind_get_return_address(&state);
21 if (!addr || !consume_entry(cookie, addr, false))
22 break;
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]23 }
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]24}