Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
a53c8fab | 2 | /* |
1da177e4 | 3 | * S390 Version |
a53c8fab | 4 | * Copyright IBM Corp. 2002, 2011 |
1da177e4 | 5 | * Author(s): Thomas Spatzier (tspat@de.ibm.com) |
c814d160 HG |
6 | * Author(s): Mahesh Salgaonkar (mahesh@linux.vnet.ibm.com) |
7 | * Author(s): Heinz Graalfs (graalfs@linux.vnet.ibm.com) | |
dd3c4670 | 8 | * Author(s): Andreas Krebbel (krebbel@linux.vnet.ibm.com) |
1da177e4 | 9 | * |
c814d160 | 10 | * @remark Copyright 2002-2011 OProfile authors |
1da177e4 LT |
11 | */ |
12 | ||
13 | #include <linux/oprofile.h> | |
14 | #include <linux/init.h> | |
dd3c4670 | 15 | #include <asm/processor.h> |
c814d160 | 16 | |
d0208639 | 17 | static int __s390_backtrace(void *data, unsigned long address, int reliable) |
758d39eb HC |
18 | { |
19 | unsigned int *depth = data; | |
20 | ||
21 | if (*depth == 0) | |
22 | return 1; | |
23 | (*depth)--; | |
24 | oprofile_add_trace(address); | |
25 | return 0; | |
26 | } | |
27 | ||
28 | static void s390_backtrace(struct pt_regs *regs, unsigned int depth) | |
29 | { | |
30 | if (user_mode(regs)) | |
31 | return; | |
32 | dump_trace(__s390_backtrace, &depth, NULL, regs->gprs[15]); | |
33 | } | |
34 | ||
ec6b426c | 35 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
1da177e4 | 36 | { |
d0f4c16f | 37 | ops->backtrace = s390_backtrace; |
dd3c4670 | 38 | return 0; |
1da177e4 LT |
39 | } |
40 | ||
41 | void oprofile_arch_exit(void) | |
42 | { | |
43 | } |