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