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