1 | /*- |
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2 | * Copyright (c) 2005 Robert N. M. Watson |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * 1. Redistributions of source code must retain the above copyright |
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9 | * notice, this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright |
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11 | * notice, this list of conditions and the following disclaimer in the |
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12 | * documentation and/or other materials provided with the distribution. |
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13 | * |
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14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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24 | * SUCH DAMAGE. |
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25 | * |
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26 | * $FreeBSD$ |
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27 | */ |
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28 | |
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29 | #ifndef _MEMSTAT_INTERNAL_H_ |
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30 | #define _MEMSTAT_INTERNAL_H_ |
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31 | |
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32 | /* |
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33 | * memstat maintains its own internal notion of statistics on each memory |
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34 | * type, common across UMA and kernel malloc. Some fields are straight from |
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35 | * the allocator statistics, others are derived when extracted from the |
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36 | * kernel. A struct memory_type will describe each type supported by an |
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37 | * allocator. memory_type structures can be chained into lists. |
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38 | */ |
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39 | struct memory_type { |
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40 | /* |
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41 | * Static properties of type. |
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42 | */ |
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43 | int mt_allocator; /* malloc(9), uma(9), etc. */ |
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44 | char mt_name[MEMTYPE_MAXNAME]; /* name of memory type. */ |
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45 | |
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46 | /* |
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47 | * (Relatively) static zone settings, that don't uniquely identify |
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48 | * the zone, but also don't change much. |
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49 | */ |
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50 | uint64_t mt_countlimit; /* 0, or maximum allocations. */ |
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51 | uint64_t mt_byteslimit; /* 0, or maximum bytes. */ |
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52 | uint64_t mt_sizemask; /* malloc: allocated size bitmask. */ |
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53 | uint64_t mt_size; /* uma: size of objects. */ |
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54 | |
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55 | /* |
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56 | * Zone or type information that includes all caches and any central |
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57 | * zone state. Depending on the allocator, this may be synthesized |
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58 | * from several sources, or directly measured. |
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59 | */ |
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60 | uint64_t mt_memalloced; /* Bytes allocated over life time. */ |
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61 | uint64_t mt_memfreed; /* Bytes freed over life time. */ |
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62 | uint64_t mt_numallocs; /* Allocations over life time. */ |
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63 | uint64_t mt_numfrees; /* Frees over life time. */ |
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64 | uint64_t mt_bytes; /* Bytes currently allocated. */ |
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65 | uint64_t mt_count; /* Number of current allocations. */ |
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66 | uint64_t mt_free; /* Number of cached free items. */ |
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67 | uint64_t mt_failures; /* Number of allocation failures. */ |
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68 | uint64_t mt_sleeps; /* Number of allocation sleeps. */ |
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69 | |
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70 | /* |
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71 | * Caller-owned memory. |
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72 | */ |
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73 | void *mt_caller_pointer[MEMSTAT_MAXCALLER]; /* Pointers. */ |
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74 | uint64_t mt_caller_uint64[MEMSTAT_MAXCALLER]; /* Integers. */ |
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75 | |
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76 | /* |
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77 | * For allocators making use of per-CPU caches, we also provide raw |
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78 | * statistics from the central allocator and each per-CPU cache, |
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79 | * which (combined) sometimes make up the above general statistics. |
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80 | * |
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81 | * First, central zone/type state, all numbers excluding any items |
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82 | * cached in per-CPU caches. |
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83 | * |
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84 | * XXXRW: Might be desirable to separately expose allocation stats |
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85 | * from zone, which should (combined with per-cpu) add up to the |
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86 | * global stats above. |
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87 | */ |
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88 | uint64_t mt_zonefree; /* Free items in zone. */ |
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89 | uint64_t mt_kegfree; /* Free items in keg. */ |
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90 | |
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91 | /* |
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92 | * Per-CPU measurements fall into two categories: per-CPU allocation, |
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93 | * and per-CPU cache state. |
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94 | */ |
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95 | struct mt_percpu_alloc_s { |
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96 | uint64_t mtp_memalloced;/* Per-CPU mt_memalloced. */ |
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97 | uint64_t mtp_memfreed; /* Per-CPU mt_memfreed. */ |
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98 | uint64_t mtp_numallocs; /* Per-CPU mt_numallocs. */ |
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99 | uint64_t mtp_numfrees; /* Per-CPU mt_numfrees. */ |
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100 | uint64_t mtp_sizemask; /* Per-CPU mt_sizemask. */ |
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101 | void *mtp_caller_pointer[MEMSTAT_MAXCALLER]; |
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102 | uint64_t mtp_caller_uint64[MEMSTAT_MAXCALLER]; |
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103 | } *mt_percpu_alloc; |
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104 | |
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105 | struct mt_percpu_cache_s { |
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106 | uint64_t mtp_free; /* Per-CPU cache free items. */ |
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107 | } *mt_percpu_cache; |
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108 | |
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109 | LIST_ENTRY(memory_type) mt_list; /* List of types. */ |
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110 | }; |
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111 | |
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112 | /* |
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113 | * Description of struct memory_type_list is in memstat.h. |
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114 | */ |
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115 | struct memory_type_list { |
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116 | LIST_HEAD(, memory_type) mtl_list; |
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117 | int mtl_error; |
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118 | }; |
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119 | |
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120 | void _memstat_mtl_empty(struct memory_type_list *list); |
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121 | struct memory_type *_memstat_mt_allocate(struct memory_type_list *list, |
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122 | int allocator, const char *name, int maxcpus); |
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123 | void _memstat_mt_reset_stats(struct memory_type *mtp, |
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124 | int maxcpus); |
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125 | |
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126 | #endif /* !_MEMSTAT_INTERNAL_H_ */ |
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