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hwcntrs.h
Package: linux-2.4.20.tar.gz　[view]
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Upload Date: 2013-04-10
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Linux-Unix program

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hwcntrs.h：Code Content
  1. /*
  2.  *
  3.  * This file is subject to the terms and conditions of the GNU General Public
  4.  * License.  See the file "COPYING" in the main directory of this archive
  5.  * for more details.
  6.  *
  7.  * Copyright (C) 1992 - 1997, 2000-2001 Silicon Graphics, Inc. All rights reserved.
  8.  */
  9. #ifndef _ASM_IA64_SN_SN1_HWCNTRS_H
  10. #define _ASM_IA64_SN_SN1_HWCNTRS_H
  13. typedef  uint64_t refcnt_t;
  15. #define SN0_REFCNT_MAX_COUNTERS 64
  17. typedef struct sn0_refcnt_set {
  18. refcnt_t    refcnt[SN0_REFCNT_MAX_COUNTERS];
  19.         uint64_t  flags;
  20.         uint64_t  reserved[4];
  21. } sn0_refcnt_set_t;
  23. typedef struct sn0_refcnt_buf {
  24. sn0_refcnt_set_t   refcnt_set;
  25. uint64_t         paddr;
  26.         uint64_t         page_size;
  27.         cnodeid_t          cnodeid;         /* cnodeid + pad[3] use 64 bits */
  28.         uint16_t           pad[3];
  29.         uint64_t         reserved[4];
  30. } sn0_refcnt_buf_t;
  32. typedef struct sn0_refcnt_args {
  33. uint64_t          vaddr;
  34. uint64_t          len;
  35. sn0_refcnt_buf_t*   buf;
  36.         uint64_t          reserved[4];
  37. } sn0_refcnt_args_t;
  39. /*
  40.  * Info needed by the user level program
  41.  * to mmap the refcnt buffer
  42.  */
  44. #define RCB_INFO_GET  1
  45. #define RCB_SLOT_GET  2
  47. typedef struct rcb_info {
  48.         uint64_t  rcb_len;                  /* total refcnt buffer len in bytes */
  50.         int         rcb_sw_sets;              /* number of sw counter sets in buffer */
  51.         int         rcb_sw_counters_per_set;  /* sw counters per set -- num_compact_nodes */
  52.         int         rcb_sw_counter_size;      /* sizeof(refcnt_t) -- size of sw cntr */
  54.         int         rcb_base_pages;           /* number of base pages in node */
  55.         int         rcb_base_page_size;       /* sw base page size */        
  56.         uint64_t  rcb_base_paddr;           /* base physical address for this node */
  58.         int         rcb_cnodeid;              /* cnodeid for this node */
  59.         int         rcb_granularity;          /* hw page size used for counter sets */
  60.         uint        rcb_hw_counter_max;       /* max hwcounter count (width mask) */
  61.         int         rcb_diff_threshold;       /* current node differential threshold */
  62.         int         rcb_abs_threshold;        /* current node absolute threshold */
  63.         int         rcb_num_slots;            /* physmem slots */
  64.         
  65.         int         rcb_reserved[512];
  66.         
  67. } rcb_info_t;
  69. typedef struct rcb_slot {
  70.         uint64_t  base;
  71.         uint64_t  size;
  72. } rcb_slot_t;
  74. #if defined(__KERNEL__)
  75. typedef struct sn0_refcnt_args_32 {
  76. uint64_t    vaddr;
  77. uint64_t    len;
  78. app32_ptr_t   buf;
  79.         uint64_t    reserved[4];
  80. } sn0_refcnt_args_32_t;
  82. /* Defines and Macros  */
  83. /* A set of reference counts are for 4k bytes of physical memory */
  84. #define NBPREFCNTP 0x1000
  85. #define BPREFCNTPSHIFT 12
  86. #define bytes_to_refcntpages(x) (((__psunsigned_t)(x)+(NBPREFCNTP-1))>>BPREFCNTPSHIFT)
  87. #define refcntpage_offset(x) ((__psunsigned_t)(x)&((NBPP-1)&~(NBPREFCNTP-1)))
  88. #define align_to_refcntpage(x) ((__psunsigned_t)(x)&(~(NBPREFCNTP-1)))
  90. extern void migr_refcnt_read(sn0_refcnt_buf_t*);
  91. extern void migr_refcnt_read_extended(sn0_refcnt_buf_t*);
  92. extern int migr_refcnt_enabled(void);
  94. #endif /* __KERNEL__ */
  96. #endif /* _ASM_IA64_SN_SN1_HWCNTRS_H */