1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * NUMA memory policies for Linux. 4*4882a593Smuzhiyun * Copyright 2003,2004 Andi Kleen SuSE Labs 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun #ifndef _UAPI_LINUX_MEMPOLICY_H 7*4882a593Smuzhiyun #define _UAPI_LINUX_MEMPOLICY_H 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/errno.h> 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun /* 13*4882a593Smuzhiyun * Both the MPOL_* mempolicy mode and the MPOL_F_* optional mode flags are 14*4882a593Smuzhiyun * passed by the user to either set_mempolicy() or mbind() in an 'int' actual. 15*4882a593Smuzhiyun * The MPOL_MODE_FLAGS macro determines the legal set of optional mode flags. 16*4882a593Smuzhiyun */ 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun /* Policies */ 19*4882a593Smuzhiyun enum { 20*4882a593Smuzhiyun MPOL_DEFAULT, 21*4882a593Smuzhiyun MPOL_PREFERRED, 22*4882a593Smuzhiyun MPOL_BIND, 23*4882a593Smuzhiyun MPOL_INTERLEAVE, 24*4882a593Smuzhiyun MPOL_LOCAL, 25*4882a593Smuzhiyun MPOL_MAX, /* always last member of enum */ 26*4882a593Smuzhiyun }; 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun /* Flags for set_mempolicy */ 29*4882a593Smuzhiyun #define MPOL_F_STATIC_NODES (1 << 15) 30*4882a593Smuzhiyun #define MPOL_F_RELATIVE_NODES (1 << 14) 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun /* 33*4882a593Smuzhiyun * MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to 34*4882a593Smuzhiyun * either set_mempolicy() or mbind(). 35*4882a593Smuzhiyun */ 36*4882a593Smuzhiyun #define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES) 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun /* Flags for get_mempolicy */ 39*4882a593Smuzhiyun #define MPOL_F_NODE (1<<0) /* return next IL mode instead of node mask */ 40*4882a593Smuzhiyun #define MPOL_F_ADDR (1<<1) /* look up vma using address */ 41*4882a593Smuzhiyun #define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */ 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun /* Flags for mbind */ 44*4882a593Smuzhiyun #define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */ 45*4882a593Smuzhiyun #define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform 46*4882a593Smuzhiyun to policy */ 47*4882a593Smuzhiyun #define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to policy */ 48*4882a593Smuzhiyun #define MPOL_MF_LAZY (1<<3) /* Modifies '_MOVE: lazy migrate on fault */ 49*4882a593Smuzhiyun #define MPOL_MF_INTERNAL (1<<4) /* Internal flags start here */ 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun #define MPOL_MF_VALID (MPOL_MF_STRICT | \ 52*4882a593Smuzhiyun MPOL_MF_MOVE | \ 53*4882a593Smuzhiyun MPOL_MF_MOVE_ALL) 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun /* 56*4882a593Smuzhiyun * Internal flags that share the struct mempolicy flags word with 57*4882a593Smuzhiyun * "mode flags". These flags are allocated from bit 0 up, as they 58*4882a593Smuzhiyun * are never OR'ed into the mode in mempolicy API arguments. 59*4882a593Smuzhiyun */ 60*4882a593Smuzhiyun #define MPOL_F_SHARED (1 << 0) /* identify shared policies */ 61*4882a593Smuzhiyun #define MPOL_F_LOCAL (1 << 1) /* preferred local allocation */ 62*4882a593Smuzhiyun #define MPOL_F_MOF (1 << 3) /* this policy wants migrate on fault */ 63*4882a593Smuzhiyun #define MPOL_F_MORON (1 << 4) /* Migrate On protnone Reference On Node */ 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun #endif /* _UAPI_LINUX_MEMPOLICY_H */ 67