From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- arch/s390/oprofile/init.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 arch/s390/oprofile/init.c (limited to 'arch/s390/oprofile/init.c') diff --git a/arch/s390/oprofile/init.c b/arch/s390/oprofile/init.c new file mode 100644 index 000000000..43d9525c3 --- /dev/null +++ b/arch/s390/oprofile/init.c @@ -0,0 +1,43 @@ +// 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 +#include +#include + +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) +{ +} -- cgit v1.2.3