linux/arch/s390/kernel/stacktrace.c
Vasily Gorbik e991e5bb11 s390/stacktrace: use common arch_stack_walk infrastructure
Use common arch_stack_walk infrastructure to avoid duplicated code and
avoid taking care of the stack storage and filtering.

Common code also uses try_get_task_stack/put_task_stack when needed which
have been missing in our code, which also solves potential problem for us.

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-08-21 12:58:53 +02:00

25 lines
592 B
C

// SPDX-License-Identifier: GPL-2.0
/*
* Stack trace management functions
*
* Copyright IBM Corp. 2006
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
*/
#include <linux/stacktrace.h>
#include <asm/stacktrace.h>
#include <asm/unwind.h>
void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie,
struct task_struct *task, struct pt_regs *regs)
{
struct unwind_state state;
unsigned long addr;
unwind_for_each_frame(&state, task, regs, 0) {
addr = unwind_get_return_address(&state);
if (!addr || !consume_entry(cookie, addr, false))
break;
}
}