core-numa.h

/*
 * Copyright (C) 2024      Colin Ian King.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */
#ifndef CORE_NUMA_H
#define CORE_NUMA_H

#if defined(HAVE_LINUX_MEMPOLICY_H)
#include <linux/mempolicy.h>
#endif

#include "core-attribute.h"

#define BITS_PER_BYTE		(8)
#define NUMA_LONG_BITS		(sizeof(unsigned long int) * BITS_PER_BYTE)

#if !defined(MPOL_DEFAULT)
#define MPOL_DEFAULT		(0)
#endif
#if !defined(MPOL_PREFERRED)
#define MPOL_PREFERRED		(1)
#endif
#if !defined(MPOL_BIND)
#define MPOL_BIND		(2)
#endif
#if !defined(MPOL_INTERLEAVE)
#define MPOL_INTERLEAVE		(3)
#endif
#if !defined(MPOL_LOCAL)
#define MPOL_LOCAL		(4)
#endif
#if !defined(MPOL_PREFERRED_MANY)
#define MPOL_PREFERRED_MANY	(5)
#endif
#if !defined(MPOL_WEIGHTED_INTERLEAVE)
#define MPOL_WEIGHTED_INTERLEAVE (6)
#endif

#if !defined(MPOL_F_NODE)
#define MPOL_F_NODE		(1 << 0)
#endif
#if !defined(MPOL_F_ADDR)
#define MPOL_F_ADDR		(1 << 1)
#endif
#if !defined(MPOL_F_MEMS_ALLOWED)
#define MPOL_F_MEMS_ALLOWED	(1 << 2)
#endif

#if !defined(MPOL_MF_STRICT)
#define MPOL_MF_STRICT		(1 << 0)
#endif
#if !defined(MPOL_MF_MOVE)
#define MPOL_MF_MOVE		(1 << 1)
#endif
#if !defined(MPOL_MF_MOVE_ALL)
#define MPOL_MF_MOVE_ALL	(1 << 2)
#endif

#if !defined(MPOL_F_NUMA_BALANCING)
#define MPOL_F_NUMA_BALANCING	(1 << 13)
#endif
#if !defined(MPOL_F_RELATIVE_NODES)
#define MPOL_F_RELATIVE_NODES	(1 << 14)
#endif
#if !defined(MPOL_F_STATIC_NODES)
#define MPOL_F_STATIC_NODES	(1 << 15)
#endif

extern int stress_numa_count_mem_nodes(unsigned long int *max_node) NONNULL(1);
extern int stress_numa_nodes(void);
extern int stress_set_mbind(const char *arg) NONNULL(1);

#endif