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// SPDX-License-Identifier: GPL-2.0
/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* GPL HEADER END
*/
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* libcfs/include/libcfs/linux/linux-cpu.h
*
* Basic library routines.
*
* Author: liang@whamcloud.com
*/
#ifndef __LIBCFS_LINUX_CPU_H__
#define __LIBCFS_LINUX_CPU_H__
#ifndef __LIBCFS_LIBCFS_H__
#error Do not #include this file directly. #include <linux/libcfs/libcfs.h> instead
#endif
#include <linux/cpu.h>
#include <linux/cpuset.h>
#include <linux/topology.h>
#ifdef CONFIG_SMP
#define HAVE_LIBCFS_CPT
/** virtual processing unit */
struct cfs_cpu_partition {
/* CPUs mask for this partition */
cpumask_t *cpt_cpumask;
/* nodes mask for this partition */
nodemask_t *cpt_nodemask;
/* spread rotor for NUMA allocator */
unsigned int cpt_spread_rotor;
};
/** descriptor for CPU partitions */
struct cfs_cpt_table {
/* version, reserved for hotplug */
unsigned int ctb_version;
/* spread rotor for NUMA allocator */
unsigned int ctb_spread_rotor;
/* # of CPU partitions */
unsigned int ctb_nparts;
/* partitions tables */
struct cfs_cpu_partition *ctb_parts;
/* shadow HW CPU to CPU partition ID */
int *ctb_cpu2cpt;
/* all cpus in this partition table */
cpumask_t *ctb_cpumask;
/* all nodes in this partition table */
nodemask_t *ctb_nodemask;
};
#endif /* CONFIG_SMP */
#endif /* __LIBCFS_LINUX_CPU_H__ */
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