Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * @file backtrace.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * @remark Copyright 2008 Tensilica Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 2015 Cadence Design Systems Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * @remark Read the file COPYING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/oprofile.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/stacktrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) static int xtensa_backtrace_cb(struct stackframe *frame, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	oprofile_add_trace(frame->pc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) void xtensa_backtrace(struct pt_regs * const regs, unsigned int depth)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	if (user_mode(regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		xtensa_backtrace_user(regs, depth, xtensa_backtrace_cb, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		xtensa_backtrace_kernel(regs, depth, xtensa_backtrace_cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 					xtensa_backtrace_cb, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) }