init.c
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// 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)
{
}