| /* |
| * 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> |
| |
| static int __s390_backtrace(void *data, unsigned long address, int reliable) |
| { |
| unsigned int *depth = data; |
| |
| if (*depth == 0) |
| return 1; |
| (*depth)--; |
| oprofile_add_trace(address); |
| return 0; |
| } |
| |
| static void s390_backtrace(struct pt_regs *regs, unsigned int depth) |
| { |
| if (user_mode(regs)) |
| return; |
| dump_trace(__s390_backtrace, &depth, NULL, regs->gprs[15]); |
| } |
| |
| int __init oprofile_arch_init(struct oprofile_operations *ops) |
| { |
| ops->backtrace = s390_backtrace; |
| return 0; |
| } |
| |
| void oprofile_arch_exit(void) |
| { |
| } |