1 /* 2 * NUMA memory policies for Linux. 3 * Copyright 2003,2004 Andi Kleen SuSE Labs 4 */ 5 #ifndef _UAPI_LINUX_MEMPOLICY_H 6 #define _UAPI_LINUX_MEMPOLICY_H 7 8 #include <linux/errno.h> 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 enum mpol_rebind_step { 27 MPOL_REBIND_ONCE, /* do rebind work at once(not by two step) */ 28 MPOL_REBIND_STEP1, /* first step(set all the newly nodes) */ 29 MPOL_REBIND_STEP2, /* second step(clean all the disallowed nodes)*/ 30 MPOL_REBIND_NSTEP, 31 }; 32 33 /* Flags for set_mempolicy */ 34 #define MPOL_F_STATIC_NODES (1 << 15) 35 #define MPOL_F_RELATIVE_NODES (1 << 14) 36 37 /* 38 * MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to 39 * either set_mempolicy() or mbind(). 40 */ 41 #define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES) 42 43 /* Flags for get_mempolicy */ 44 #define MPOL_F_NODE (1<<0) /* return next IL mode instead of node mask */ 45 #define MPOL_F_ADDR (1<<1) /* look up vma using address */ 46 #define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */ 47 48 /* Flags for mbind */ 49 #define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */ 50 #define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform to mapping */ 51 #define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to mapping */ 52 #define MPOL_MF_INTERNAL (1<<3) /* Internal flags start here */ 53 54 /* 55 * Internal flags that share the struct mempolicy flags word with 56 * "mode flags". These flags are allocated from bit 0 up, as they 57 * are never OR'ed into the mode in mempolicy API arguments. 58 */ 59 #define MPOL_F_SHARED (1 << 0) /* identify shared policies */ 60 #define MPOL_F_LOCAL (1 << 1) /* preferred local allocation */ 61 #define MPOL_F_REBINDING (1 << 2) /* identify policies in rebinding */ 62 63 64 #endif /* _UAPI_LINUX_MEMPOLICY_H */ 65