Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * S390 Version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *   Copyright IBM Corp. 2002, 2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *   Author(s): Thomas Spatzier (tspat@de.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *   Author(s): Mahesh Salgaonkar (mahesh@linux.vnet.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *   Author(s): Heinz Graalfs (graalfs@linux.vnet.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *   Author(s): Andreas Krebbel (krebbel@linux.vnet.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * @remark Copyright 2002-2011 OProfile authors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/oprofile.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/processor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/unwind.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static void s390_backtrace(struct pt_regs *regs, unsigned int depth)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	struct unwind_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	unwind_for_each_frame(&state, current, regs, 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		if (depth-- == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		oprofile_add_trace(state.ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) int __init oprofile_arch_init(struct oprofile_operations *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	ops->backtrace = s390_backtrace;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) void oprofile_arch_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }