1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2005 Robert N. M. Watson 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _MEMSTAT_INTERNAL_H_ 30 #define _MEMSTAT_INTERNAL_H_ 31 32 /* 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. 38 */ 39 struct memory_type { 40 /* 41 * Static properties of type. 42 */ 43 int mt_allocator; /* malloc(9), uma(9), etc. */ 44 char mt_name[MEMTYPE_MAXNAME]; /* name of memory type. */ 45 46 /* 47 * (Relatively) static zone settings, that don't uniquely identify 48 * the zone, but also don't change much. 49 */ 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. */ 54 uint64_t mt_rsize; /* uma: real size of objects. */ 55 56 /* 57 * Zone or type information that includes all caches and any central 58 * zone state. Depending on the allocator, this may be synthesized 59 * from several sources, or directly measured. 60 */ 61 uint64_t mt_memalloced; /* Bytes allocated over life time. */ 62 uint64_t mt_memfreed; /* Bytes freed over life time. */ 63 uint64_t mt_numallocs; /* Allocations over life time. */ 64 uint64_t mt_numfrees; /* Frees over life time. */ 65 uint64_t mt_bytes; /* Bytes currently allocated. */ 66 uint64_t mt_count; /* Number of current allocations. */ 67 uint64_t mt_free; /* Number of cached free items. */ 68 uint64_t mt_failures; /* Number of allocation failures. */ 69 uint64_t mt_sleeps; /* Number of allocation sleeps. */ 70 uint64_t mt_xdomain; /* Number of cross domain sleeps. */ 71 72 /* 73 * Caller-owned memory. 74 */ 75 void *mt_caller_pointer[MEMSTAT_MAXCALLER]; /* Pointers. */ 76 uint64_t mt_caller_uint64[MEMSTAT_MAXCALLER]; /* Integers. */ 77 78 /* 79 * For allocators making use of per-CPU caches, we also provide raw 80 * statistics from the central allocator and each per-CPU cache, 81 * which (combined) sometimes make up the above general statistics. 82 * 83 * First, central zone/type state, all numbers excluding any items 84 * cached in per-CPU caches. 85 * 86 * XXXRW: Might be desirable to separately expose allocation stats 87 * from zone, which should (combined with per-cpu) add up to the 88 * global stats above. 89 */ 90 uint64_t mt_zonefree; /* Free items in zone. */ 91 uint64_t mt_kegfree; /* Free items in keg. */ 92 93 /* 94 * Per-CPU measurements fall into two categories: per-CPU allocation, 95 * and per-CPU cache state. 96 */ 97 struct mt_percpu_alloc_s { 98 uint64_t mtp_memalloced;/* Per-CPU mt_memalloced. */ 99 uint64_t mtp_memfreed; /* Per-CPU mt_memfreed. */ 100 uint64_t mtp_numallocs; /* Per-CPU mt_numallocs. */ 101 uint64_t mtp_numfrees; /* Per-CPU mt_numfrees. */ 102 uint64_t mtp_sizemask; /* Per-CPU mt_sizemask. */ 103 void *mtp_caller_pointer[MEMSTAT_MAXCALLER]; 104 uint64_t mtp_caller_uint64[MEMSTAT_MAXCALLER]; 105 } *mt_percpu_alloc; 106 107 struct mt_percpu_cache_s { 108 uint64_t mtp_free; /* Per-CPU cache free items. */ 109 } *mt_percpu_cache; 110 111 LIST_ENTRY(memory_type) mt_list; /* List of types. */ 112 }; 113 114 /* 115 * Description of struct memory_type_list is in memstat.h. 116 */ 117 struct memory_type_list { 118 LIST_HEAD(, memory_type) mtl_list; 119 int mtl_error; 120 }; 121 122 void _memstat_mtl_empty(struct memory_type_list *list); 123 struct memory_type *_memstat_mt_allocate(struct memory_type_list *list, 124 int allocator, const char *name, int maxcpus); 125 void _memstat_mt_reset_stats(struct memory_type *mtp, 126 int maxcpus); 127 128 #endif /* !_MEMSTAT_INTERNAL_H_ */ 129