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Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

mempolicy.h (2595B)

    

  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2. /*
  3.  * NUMA memory policies for Linux.
  4.  * Copyright 2003,2004 Andi Kleen SuSE Labs
  5.  */
  6. #ifndef _LINUX_MEMPOLICY_H
  7. #define _LINUX_MEMPOLICY_H
  9. #include <linux/errno.h>
  12. /*
  13.  * Both the MPOL_* mempolicy mode and the MPOL_F_* optional mode flags are
  14.  * passed by the user to either set_mempolicy() or mbind() in an 'int' actual.
  15.  * The MPOL_MODE_FLAGS macro determines the legal set of optional mode flags.
  16.  */
  18. /* Policies */
  19. enum {
  20. 	MPOL_DEFAULT,
  21. 	MPOL_PREFERRED,
  22. 	MPOL_BIND,
  23. 	MPOL_INTERLEAVE,
  24. 	MPOL_LOCAL,
  25. 	MPOL_PREFERRED_MANY,
  26. 	MPOL_WEIGHTED_INTERLEAVE,
  27. 	MPOL_MAX,	/* always last member of enum */
  28. };
  30. /* Flags for set_mempolicy */
  31. #define MPOL_F_STATIC_NODES	(1 << 15)
  32. #define MPOL_F_RELATIVE_NODES	(1 << 14)
  33. #define MPOL_F_NUMA_BALANCING	(1 << 13) /* Optimize with NUMA balancing if possible */
  35. /*
  36.  * MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to
  37.  * either set_mempolicy() or mbind().
  38.  */
  39. #define MPOL_MODE_FLAGS							\
  40. 	(MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES | MPOL_F_NUMA_BALANCING)
  42. /* Flags for get_mempolicy */
  43. #define MPOL_F_NODE	(1<<0)	/* return next IL mode instead of node mask */
  44. #define MPOL_F_ADDR	(1<<1)	/* look up vma using address */
  45. #define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */
  47. /* Flags for mbind */
  48. #define MPOL_MF_STRICT	(1<<0)	/* Verify existing pages in the mapping */
  49. #define MPOL_MF_MOVE	 (1<<1)	/* Move pages owned by this process to conform
  50. 				   to policy */
  51. #define MPOL_MF_MOVE_ALL (1<<2)	/* Move every page to conform to policy */
  52. #define MPOL_MF_LAZY	 (1<<3)	/* UNSUPPORTED FLAG: Lazy migrate on fault */
  53. #define MPOL_MF_INTERNAL (1<<4)	/* Internal flags start here */
  55. #define MPOL_MF_VALID	(MPOL_MF_STRICT   | 	\
  56. 			 MPOL_MF_MOVE     | 	\
  57. 			 MPOL_MF_MOVE_ALL)
  59. /*
  60.  * Internal flags that share the struct mempolicy flags word with
  61.  * "mode flags".  These flags are allocated from bit 0 up, as they
  62.  * are never OR'ed into the mode in mempolicy API arguments.
  63.  */
  64. #define MPOL_F_SHARED  (1 << 0)	/* identify shared policies */
  65. #define MPOL_F_MOF	(1 << 3) /* this policy wants migrate on fault */
  66. #define MPOL_F_MORON	(1 << 4) /* Migrate On protnone Reference On Node */
  68. /*
  69.  * These bit locations are exposed in the vm.zone_reclaim_mode sysctl
  70.  * ABI.  New bits are OK, but existing bits can never change.
  71.  */
  72. #define RECLAIM_ZONE	(1<<0)	/* Run shrink_inactive_list on the zone */
  73. #define RECLAIM_WRITE	(1<<1)	/* Writeout pages during reclaim */
  74. #define RECLAIM_UNMAP	(1<<2)	/* Unmap pages during reclaim */
  76. #endif /* _LINUX_MEMPOLICY_H */