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android_kernel_...
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arch
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ia64
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include
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asm
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nodedata.h

nodedata.h 1.9 KB
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  1. /*
    2. 

  2.  * This file is subject to the terms and conditions of the GNU General Public
    3. 

  3.  * License.  See the file "COPYING" in the main directory of this archive
    4. 

  4.  * for more details.
    5. 

  5.  *
    6. 

  6.  * Copyright (c) 2000 Silicon Graphics, Inc.  All rights reserved.
    7. 

  7.  * Copyright (c) 2002 NEC Corp.
    8. 

  8.  * Copyright (c) 2002 Erich Focht <efocht@ess.nec.de>
    9. 

  9.  * Copyright (c) 2002 Kimio Suganuma <k-suganuma@da.jp.nec.com>
    10. 

  10.  */
    11. 

  11. #ifndef _ASM_IA64_NODEDATA_H
    12. 

  12. #define _ASM_IA64_NODEDATA_H
    13. 

  13. 

  14. #include <linux/numa.h>
    15. 

  15. 

  16. #include <asm/percpu.h>
    17. 

  17. #include <asm/mmzone.h>
    18. 

  18. 

  19. #ifdef CONFIG_NUMA
    20. 

  20. 

  21. /*
    22. 

  22.  * Node Data. One of these structures is located on each node of a NUMA system.
    23. 

  23.  */
    24. 

  24. 

  25. struct pglist_data;
    26. 

  26. struct ia64_node_data {
    27. 

  27. 	short			active_cpu_count;
    28. 

  28. 	short			node;
    29. 

  29. 	struct pglist_data	*pg_data_ptrs[MAX_NUMNODES];
    30. 

  30. };
    31. 

  31. 

  32. 

  33. /*
    34. 

  34.  * Return a pointer to the node_data structure for the executing cpu.
    35. 

  35.  */
    36. 

  36. #define local_node_data		(local_cpu_data->node_data)
    37. 

  37. 

  38. /*
    39. 

  39.  * Given a node id, return a pointer to the pg_data_t for the node.
    40. 

  40.  *
    41. 

  41.  * NODE_DATA 	- should be used in all code not related to system
    42. 

  42.  *		  initialization. It uses pernode data structures to minimize
    43. 

  43.  *		  offnode memory references. However, these structure are not 
    44. 

  44.  *		  present during boot. This macro can be used once cpu_init
    45. 

  45.  *		  completes.
    46. 

  46.  */
    47. 

  47. #define NODE_DATA(nid)		(local_node_data->pg_data_ptrs[nid])
    48. 

  48. 

  49. /*
    50. 

  50.  * LOCAL_DATA_ADDR - This is to calculate the address of other node's
    51. 

  51.  *		     "local_node_data" at hot-plug phase. The local_node_data
    52. 

  52.  *		     is pointed by per_cpu_page. Kernel usually use it for
    53. 

  53.  *		     just executing cpu. However, when new node is hot-added,
    54. 

  54.  *		     the addresses of local data for other nodes are necessary
    55. 

  55.  *		     to update all of them.
    56. 

  56.  */
    57. 

  57. #define LOCAL_DATA_ADDR(pgdat)  			\
    58. 

  58. 	((struct ia64_node_data *)((u64)(pgdat) + 	\
    59. 

  59. 				   L1_CACHE_ALIGN(sizeof(struct pglist_data))))
    60. 

  60. 

  61. #endif /* CONFIG_NUMA */
    62. 

  62. 

  63. #endif /* _ASM_IA64_NODEDATA_H */
    64.