// SPDX-License-Identifier: GPL-2.0
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/*
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* S390 Version
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* Copyright IBM Corp. 2002, 2011
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* Author(s): Thomas Spatzier (tspat@de.ibm.com)
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* Author(s): Mahesh Salgaonkar (mahesh@linux.vnet.ibm.com)
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* Author(s): Heinz Graalfs (graalfs@linux.vnet.ibm.com)
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* Author(s): Andreas Krebbel (krebbel@linux.vnet.ibm.com)
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*
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* @remark Copyright 2002-2011 OProfile authors
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*/
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#include <linux/oprofile.h>
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#include <linux/init.h>
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#include <asm/processor.h>
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static int __s390_backtrace(void *data, unsigned long address, int reliable)
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{
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unsigned int *depth = data;
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if (*depth == 0)
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return 1;
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(*depth)--;
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oprofile_add_trace(address);
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return 0;
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}
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static void s390_backtrace(struct pt_regs *regs, unsigned int depth)
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{
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if (user_mode(regs))
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return;
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dump_trace(__s390_backtrace, &depth, NULL, regs->gprs[15]);
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}
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int __init oprofile_arch_init(struct oprofile_operations *ops)
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{
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ops->backtrace = s390_backtrace;
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return 0;
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}
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void oprofile_arch_exit(void)
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{
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}
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