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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note *//* * NUMA memory policies for Linux. * Copyright 2003,2004 Andi Kleen SuSE Labs */#ifndef _UAPI_LINUX_MEMPOLICY_H#define _UAPI_LINUX_MEMPOLICY_H
#include <linux/errno.h>
/* * Both the MPOL_* mempolicy mode and the MPOL_F_* optional mode flags are * passed by the user to either set_mempolicy() or mbind() in an 'int' actual. * The MPOL_MODE_FLAGS macro determines the legal set of optional mode flags. */
/* Policies */enum { MPOL_DEFAULT, MPOL_PREFERRED, MPOL_BIND, MPOL_INTERLEAVE, MPOL_LOCAL, MPOL_PREFERRED_MANY, MPOL_WEIGHTED_INTERLEAVE, MPOL_MAX, /* always last member of enum */};
/* Flags for set_mempolicy */#define MPOL_F_STATIC_NODES (1 << 15)#define MPOL_F_RELATIVE_NODES (1 << 14)#define MPOL_F_NUMA_BALANCING (1 << 13) /* Optimize with NUMA balancing if possible */
/* * MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to * either set_mempolicy() or mbind(). */#define MPOL_MODE_FLAGS \ (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES | MPOL_F_NUMA_BALANCING)
/* Whether the nodemask is specified by users */#define MPOL_USER_NODEMASK_FLAGS (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES)
/* Flags for get_mempolicy */#define MPOL_F_NODE (1<<0) /* return next IL mode instead of node mask */#define MPOL_F_ADDR (1<<1) /* look up vma using address */#define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */
/* Flags for mbind */#define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */#define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform to policy */#define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to policy */#define MPOL_MF_LAZY (1<<3) /* UNSUPPORTED FLAG: Lazy migrate on fault */#define MPOL_MF_INTERNAL (1<<4) /* Internal flags start here */
#define MPOL_MF_VALID (MPOL_MF_STRICT | \ MPOL_MF_MOVE | \ MPOL_MF_MOVE_ALL)
/* * Internal flags that share the struct mempolicy flags word with * "mode flags". These flags are allocated from bit 0 up, as they * are never OR'ed into the mode in mempolicy API arguments. */#define MPOL_F_SHARED (1 << 0) /* identify shared policies */#define MPOL_F_MOF (1 << 3) /* this policy wants migrate on fault */#define MPOL_F_MORON (1 << 4) /* Migrate On protnone Reference On Node */
/* * Enabling zone reclaim means the page allocator will attempt to fulfill * the allocation request on the current node by triggering reclaim and * trying to shrink the current node. * Fallback allocations on the next candidates in the zonelist are considered * when reclaim fails to free up enough memory in the current node/zone. * * These bit locations are exposed in the vm.zone_reclaim_mode sysctl. * New bits are OK, but existing bits should not be changed. */#define RECLAIM_ZONE (1<<0) /* Enable zone reclaim */#define RECLAIM_WRITE (1<<1) /* Writeout pages during reclaim */#define RECLAIM_UNMAP (1<<2) /* Unmap pages during reclaim */
#endif /* _UAPI_LINUX_MEMPOLICY_H */