/* $OpenBSD: malloc.h,v 1.127 2025/02/05 18:29:17 mvs Exp $ */ /* $NetBSD: malloc.h,v 1.39 1998/07/12 19:52:01 augustss Exp $ */ /* * Copyright (c) 1987, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)malloc.h 8.5 (Berkeley) 5/3/95 */ #ifndef _SYS_MALLOC_H_ #define _SYS_MALLOC_H_ #include <sys/queue.h> #define KERN_MALLOC_BUCKETS 1 #define KERN_MALLOC_BUCKET 2 #define KERN_MALLOC_KMEMNAMES 3 #define KERN_MALLOC_KMEMSTATS 4 #define KERN_MALLOC_MAXID 5 #define CTL_KERN_MALLOC_NAMES { \ { 0, 0 }, \ { "buckets", CTLTYPE_STRING }, \ { "bucket", CTLTYPE_NODE }, \ { "kmemnames", CTLTYPE_STRING }, \ { "kmemstat", CTLTYPE_NODE }, \ } /* * flags to malloc */ #define M_WAITOK 0x0001 #define M_NOWAIT 0x0002 #define M_CANFAIL 0x0004 #define M_ZERO 0x0008 /* * Types of memory to be allocated */ #define M_FREE 0 /* should be on free list */ /* 1 - free */ #define M_DEVBUF 2 /* device driver memory */ /* 3 - free */ #define M_PCB 4 /* protocol control blocks */ #define M_RTABLE 5 /* routing tables */ #define M_PF 6 /* packet filter structures */ /* 7 - free */ /* 8 - free */ #define M_IFADDR 9 /* interface addresses */ #define M_IFGROUP 10 /* interface groups */ #define M_SYSCTL 11 /* sysctl persistent buffers */ #define M_COUNTERS 12 /* per-CPU counters via counters_alloc(9) */ /* 13 - free */ #define M_IOCTLOPS 14 /* ioctl data buffers */ /* 15-18 - free */ #define M_IOV 19 /* large IOVs */ #define M_MOUNT 20 /* VFS mount structs */ /* 21 - free */ #define M_NFSREQ 22 /* NFS request headers */ #define M_NFSMNT 23 /* NFS mount structures */ #define M_LOG 24 /* messages in kernel log stash */ #define M_VNODE 25 /* Dynamically allocated vnodes */ /* 26 - free */ #define M_DQUOT 27 /* UFS quota entries */ #define M_UFSMNT 28 /* UFS mount structures */ #define M_SHM 29 /* SVID compatible shared memory segments */ #define M_VMMAP 30 /* VM map structures */ #define M_SEM 31 /* SVID compatible semaphores */ #define M_DIRHASH 32 /* UFS directory hash structures */ #define M_ACPI 33 /* ACPI structures */ #define M_VMPMAP 34 /* VM pmap data */ /* 35-38 - free */ #define M_FILEDESC 39 /* open file descriptor tables */ #define M_SIGIO 40 /* sigio structures */ #define M_PROC 41 /* proc structures */ #define M_SUBPROC 42 /* proc sub-structures */ /* 43-45 - free */ #define M_MFSNODE 46 /* MFS vnode private part */ /* 47-48 - free */ #define M_NETADDR 49 /* export host address structures */ #define M_NFSSVC 50 /* NFS server structures */ /* 51 - free */ #define M_NFSD 52 /* NFS server daemon structures */ #define M_IPMOPTS 53 /* internet multicast options */ #define M_IPMADDR 54 /* internet multicast addresses */ #define M_IFMADDR 55 /* link-level multicast addresses */ #define M_MRTABLE 56 /* multicast routing tables */ #define M_ISOFSMNT 57 /* ISOFS mount structures */ #define M_ISOFSNODE 58 /* ISOFS vnode private part */ #define M_MSDOSFSMNT 59 /* MSDOS FS mount structures */ #define M_MSDOSFSFAT 60 /* MSDOS FS FAT tables */ #define M_MSDOSFSNODE 61 /* MSDOS FS vnode private part */ #define M_TTYS 62 /* allocated tty structures */ #define M_EXEC 63 /* argument lists & other mem used by exec */ #define M_MISCFSMNT 64 /* miscellaneous FS mount structures */ #define M_FUSEFS 65 /* FUSE FS mount structures */ /* 66-73 - free */ #define M_PFKEY 74 /* pfkey data */ #define M_TDB 75 /* transforms database */ #define M_XDATA 76 /* IPsec data */ /* 77 - free */ #define M_PAGEDEP 78 /* file page dependencies */ #define M_INODEDEP 79 /* inode dependencies */ #define M_NEWBLK 80 /* new block allocation */ /* 81-82 - free */ #define M_INDIRDEP 83 /* indirect block dependencies */ /* 84-91 - free */ #define M_VMSWAP 92 /* VM swap structures */ /* 93-97 - free */ #define M_UVMAMAP 98 /* UVM amap and related */ #define M_UVMAOBJ 99 /* UVM aobj and related */ #define M_PINSYSCALL 100 /* pinsyscall */ #define M_USB 101 /* USB general */ #define M_USBDEV 102 /* USB device driver */ #define M_USBHC 103 /* USB host controller */ #define M_WITNESS 104 /* witness(4) memory */ #define M_MEMDESC 105 /* memory range */ /* 106-107 - free */ #define M_CRYPTO_DATA 108 /* crypto(9) data buffers */ /* 109 - free */ #define M_CREDENTIALS 110 /* ipsec(4) related credentials */ /* 111-122 - free */ /* KAME IPv6 */ #define M_IP6OPT 123 /* IPv6 options */ #define M_IP6NDP 124 /* IPv6 Neighbor Discovery structures */ /* 125-126 - free */ #define M_TEMP 127 /* miscellaneous temporary data buffers */ #define M_NTFSMNT 128 /* NTFS mount structures */ #define M_NTFSNTNODE 129 /* NTFS ntnode information */ #define M_NTFSFNODE 130 /* NTFS fnode information */ #define M_NTFSDIR 131 /* NTFS directory buffers */ #define M_NTFSNTHASH 132 /* NTFS ntnode hash tables */ #define M_NTFSNTVATTR 133 /* NTFS file attribute information */ #define M_NTFSRDATA 134 /* NTFS resident data */ #define M_NTFSDECOMP 135 /* NTFS decompression temporary storage */ #define M_NTFSRUN 136 /* NTFS vrun storage */ #define M_KEVENT 137 /* kqueue(2) data structures */ /* 138 free */ #define M_SYNCACHE 139 /* SYN cache hash array */ #define M_UDFMOUNT 140 /* UDF mount structures */ #define M_UDFFENTRY 141 /* UDF file entries */ #define M_UDFFID 142 /* UDF file IDs */ /* 143 free */ #define M_AGP 144 /* AGP memory */ #define M_DRM 145 /* Direct Rendering Manager */ #define M_LAST 146 /* Must be last type + 1 */ #define INITKMEMNAMES { \ "free", /* 0 M_FREE */ \ NULL, \ "devbuf", /* 2 M_DEVBUF */ \ NULL, \ "pcb", /* 4 M_PCB */ \ "rtable", /* 5 M_RTABLE */ \ "pf", /* 6 M_PF */ \ NULL, \ NULL, \ "ifaddr", /* 9 M_IFADDR */ \ "ifgroup", /* 10 M_IFGROUP */ \ "sysctl", /* 11 M_SYSCTL */ \ "counters", /* 12 M_COUNTERS */ \ NULL, \ "ioctlops", /* 14 M_IOCTLOPS */ \ NULL, \ NULL, \ NULL, \ NULL, \ "iov", /* 19 M_IOV */ \ "mount", /* 20 M_MOUNT */ \ NULL, \ "NFS req", /* 22 M_NFSREQ */ \ "NFS mount", /* 23 M_NFSMNT */ \ "log", /* 24 M_LOG */ \ "vnodes", /* 25 M_VNODE */ \ NULL, \ "UFS quota", /* 27 M_DQUOT */ \ "UFS mount", /* 28 M_UFSMNT */ \ "shm", /* 29 M_SHM */ \ "VM map", /* 30 M_VMMAP */ \ "sem", /* 31 M_SEM */ \ "dirhash", /* 32 M_DIRHASH */ \ "ACPI", /* 33 M_ACPI */ \ "VM pmap", /* 34 M_VMPMAP */ \ NULL, /* 35 */ \ NULL, /* 36 */ \ NULL, /* 37 */ \ NULL, \ "file desc", /* 39 M_FILEDESC */ \ "sigio", /* 40 M_SIGIO */ \ "proc", /* 41 M_PROC */ \ "subproc", /* 42 M_SUBPROC */ \ NULL, \ NULL, \ NULL, \ "MFS node", /* 46 M_MFSNODE */ \ NULL, \ NULL, \ "Export Host", /* 49 M_NETADDR */ \ "NFS srvsock", /* 50 M_NFSSVC */ \ NULL, \ "NFS daemon", /* 52 M_NFSD */ \ "ip_moptions", /* 53 M_IPMOPTS */ \ "in_multi", /* 54 M_IPMADDR */ \ "ether_multi", /* 55 M_IFMADDR */ \ "mrt", /* 56 M_MRTABLE */ \ "ISOFS mount", /* 57 M_ISOFSMNT */ \ "ISOFS node", /* 58 M_ISOFSNODE */ \ "MSDOSFS mount", /* 59 M_MSDOSFSMNT */ \ "MSDOSFS fat", /* 60 M_MSDOSFSFAT */ \ "MSDOSFS node", /* 61 M_MSDOSFSNODE */ \ "ttys", /* 62 M_TTYS */ \ "exec", /* 63 M_EXEC */ \ "miscfs mount", /* 64 M_MISCFSMNT */ \ "fusefs mount", /* 65 M_FUSEFS */ \ NULL, \ NULL, \ NULL, \ NULL, \ NULL, \ NULL, \ NULL, \ NULL, \ "pfkey data", /* 74 M_PFKEY */ \ "tdb", /* 75 M_TDB */ \ "xform_data", /* 76 M_XDATA */ \ NULL, \ "pagedep", /* 78 M_PAGEDEP */ \ "inodedep", /* 79 M_INODEDEP */ \ "newblk", /* 80 M_NEWBLK */ \ NULL, \ NULL, \ "indirdep", /* 83 M_INDIRDEP */ \ NULL, NULL, NULL, NULL, \ NULL, NULL, NULL, NULL, \ "VM swap", /* 92 M_VMSWAP */ \ NULL, NULL, NULL, NULL, NULL, \ "UVM amap", /* 98 M_UVMAMAP */ \ "UVM aobj", /* 99 M_UVMAOBJ */ \ "pinsyscall", /* 100 M_PINSYSCALL */ \ "USB", /* 101 M_USB */ \ "USB device", /* 102 M_USBDEV */ \ "USB HC", /* 103 M_USBHC */ \ "witness", /* 104 M_WITNESS */ \ "memdesc", /* 105 M_MEMDESC */ \ NULL, /* 106 */ \ NULL, \ "crypto data", /* 108 M_CRYPTO_DATA */ \ NULL, \ "IPsec creds", /* 110 M_CREDENTIALS */ \ NULL, NULL, NULL, NULL, \ NULL, NULL, NULL, NULL, \ NULL, NULL, NULL, NULL, \ "ip6_options", /* 123 M_IP6OPT */ \ "NDP", /* 124 M_IP6NDP */ \ NULL, \ NULL, \ "temp", /* 127 M_TEMP */ \ "NTFS mount", /* 128 M_NTFSMNT */ \ "NTFS node", /* 129 M_NTFSNTNODE */ \ "NTFS fnode", /* 130 M_NTFSFNODE */ \ "NTFS dir", /* 131 M_NTFSDIR */ \ "NTFS hash", /* 132 M_NTFSNTHASH */ \ "NTFS attr", /* 133 M_NTFSNTVATTR */ \ "NTFS data", /* 134 M_NTFSRDATA */ \ "NTFS decomp", /* 135 M_NTFSDECOMP */ \ "NTFS vrun", /* 136 M_NTFSRUN */ \ "kqueue", /* 137 M_KEVENT */ \ NULL, /* 138 free */ \ "SYN cache", /* 139 M_SYNCACHE */ \ "UDF mount", /* 140 M_UDFMOUNT */ \ "UDF file entry", /* 141 M_UDFFENTRY */ \ "UDF file id", /* 142 M_UDFFID */ \ NULL, /* 143 free */ \ "AGP Memory", /* 144 M_AGP */ \ "DRM", /* 145 M_DRM */ \ } struct kmemstats { long ks_inuse; /* # of packets of this type currently in use */ long ks_calls; /* total packets of this type ever allocated */ long ks_memuse; /* total memory held in bytes */ u_short ks_limblocks; /* number of times blocked for hitting limit */ long ks_maxused; /* maximum number ever used */ long ks_limit; /* most that are allowed to exist */ long ks_size; /* sizes of this thing that are allocated */ long ks_spare; }; /* * Array of descriptors that describe the contents of each page */ struct kmemusage { short ku_indx; /* bucket index */ union { u_short freecnt;/* for small allocations, free pieces in page */ u_short pagecnt;/* for large allocations, pages alloced */ } ku_un; }; #define ku_freecnt ku_un.freecnt #define ku_pagecnt ku_un.pagecnt struct kmem_freelist; /* * Set of buckets for each size of memory block that is retained */ struct kmembuckets { XSIMPLEQ_HEAD(, kmem_freelist) kb_freelist; /* list of free blocks */ u_int64_t kb_calls; /* total calls to allocate this size */ u_int64_t kb_total; /* total number of blocks allocated */ u_int64_t kb_totalfree; /* # of free elements in this bucket */ u_int64_t kb_elmpercl; /* # of elements in this sized allocation */ u_int64_t kb_highwat; /* high water mark */ u_int64_t kb_couldfree; /* over high water mark and could free */ }; /* * Constants for setting the parameters of the kernel memory allocator. * * 2 ** MINBUCKET is the smallest unit of memory that will be * allocated. It must be at least large enough to hold a pointer. * * Units of memory less or equal to MAXALLOCSAVE will permanently * allocate physical memory; requests for these size pieces of * memory are quite fast. Allocations greater than MAXALLOCSAVE must * always allocate and free physical memory; requests for these * size allocations should be done infrequently as they will be slow. * * Constraints: PAGE_SIZE <= MAXALLOCSAVE <= 2 ** (MINBUCKET + 14), and * MAXALLOCSIZE must be a power of two. */ #define MINBUCKET 4 /* 4 => min allocation of 16 bytes */ #ifdef _KERNEL #define MINALLOCSIZE (1 << MINBUCKET) #define MAXALLOCSAVE (2 * PAGE_SIZE) #define MALLOC_MAX (65535 * PAGE_SIZE) /* * Turn virtual addresses into kmem map indices */ #define kmemxtob(alloc) (kmembase + (alloc) * PAGE_SIZE) #define btokmemx(addr) (((caddr_t)(addr) - kmembase) / PAGE_SIZE) #define btokup(addr) (&kmemusage[((caddr_t)(addr) - kmembase) >> PAGE_SHIFT]) extern struct kmemstats kmemstats[]; extern struct kmemusage *kmemusage; extern char *kmembase; extern struct kmembuckets bucket[]; void *malloc(size_t, int, int); void *mallocarray(size_t, size_t, int, int); void free(void *, int, size_t); int sysctl_malloc(int *, u_int, void *, size_t *, void *, size_t, struct proc *); void malloc_printit(int (*)(const char *, ...)); void poison_mem(void *, size_t); int poison_check(void *, size_t, size_t *, uint32_t *); uint32_t poison_value(void *); #endif /* _KERNEL */ #endif /* !_SYS_MALLOC_H_ */
