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Edit File: mempolicy.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * NUMA memory policies for Linux. * Copyright 2003,2004 Andi Kleen SuSE Labs */ #ifndef _LINUX_MEMPOLICY_H #define _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_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) /* 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 */ /* * These bit locations are exposed in the vm.zone_reclaim_mode sysctl * ABI. New bits are OK, but existing bits can never change. */ #define RECLAIM_ZONE (1<<0) /* Run shrink_inactive_list on the zone */ #define RECLAIM_WRITE (1<<1) /* Writeout pages during reclaim */ #define RECLAIM_UNMAP (1<<2) /* Unmap pages during reclaim */ #endif /* _LINUX_MEMPOLICY_H */