| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * S390 Version |
| * Copyright IBM Corp. 2002, 2011 |
| * Author(s): Thomas Spatzier (tspat@de.ibm.com) |
| * Author(s): Mahesh Salgaonkar (mahesh@linux.vnet.ibm.com) |
| * Author(s): Heinz Graalfs (graalfs@linux.vnet.ibm.com) |
| * Author(s): Andreas Krebbel (krebbel@linux.vnet.ibm.com) |
| * |
| * @remark Copyright 2002-2011 OProfile authors |
| */ |
| |
| #include <linux/oprofile.h> |
| #include <linux/init.h> |
| #include <asm/processor.h> |
| #include <asm/unwind.h> |
| |
| static void s390_backtrace(struct pt_regs *regs, unsigned int depth) |
| { |
| struct unwind_state state; |
| |
| unwind_for_each_frame(&state, current, regs, 0) { |
| if (depth-- == 0) |
| break; |
| oprofile_add_trace(state.ip); |
| } |
| } |
| |
| int __init oprofile_arch_init(struct oprofile_operations *ops) |
| { |
| ops->backtrace = s390_backtrace; |
| return 0; |
| } |
| |
| void oprofile_arch_exit(void) |
| { |
| } |
