739 lines
18 KiB
C
739 lines
18 KiB
C
/* $NetBSD: kern_malloc.c,v 1.57 2001/01/18 20:28:18 jdolecek Exp $ */
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/*
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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* Copyright (c) 1987, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)kern_malloc.c 8.4 (Berkeley) 5/20/95
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*/
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#include "opt_lockdebug.h"
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/map.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/systm.h>
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#include <uvm/uvm_extern.h>
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static struct vm_map_intrsafe kmem_map_store;
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vm_map_t kmem_map = NULL;
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#include "opt_kmempages.h"
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#ifdef NKMEMCLUSTERS
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#error NKMEMCLUSTERS is obsolete; remove it from your kernel config file and use NKMEMPAGES instead or let the kernel auto-size
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#endif
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/*
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* Default number of pages in kmem_map. We attempt to calculate this
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* at run-time, but allow it to be either patched or set in the kernel
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* config file.
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*/
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#ifndef NKMEMPAGES
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#define NKMEMPAGES 0
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#endif
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int nkmempages = NKMEMPAGES;
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/*
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* Defaults for lower- and upper-bounds for the kmem_map page count.
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* Can be overridden by kernel config options.
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*/
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#ifndef NKMEMPAGES_MIN
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#define NKMEMPAGES_MIN NKMEMPAGES_MIN_DEFAULT
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#endif
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#ifndef NKMEMPAGES_MAX
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#define NKMEMPAGES_MAX NKMEMPAGES_MAX_DEFAULT
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#endif
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#include "opt_kmemstats.h"
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#include "opt_malloclog.h"
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struct kmembuckets bucket[MINBUCKET + 16];
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struct kmemstats kmemstats[M_LAST];
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struct kmemusage *kmemusage;
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char *kmembase, *kmemlimit;
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const char * const memname[] = INITKMEMNAMES;
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#ifdef MALLOCLOG
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#ifndef MALLOCLOGSIZE
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#define MALLOCLOGSIZE 100000
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#endif
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struct malloclog {
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void *addr;
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long size;
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int type;
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int action;
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const char *file;
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long line;
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} malloclog[MALLOCLOGSIZE];
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long malloclogptr;
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static void domlog __P((void *a, long size, int type, int action,
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const char *file, long line));
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static void hitmlog __P((void *a));
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static void
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domlog(a, size, type, action, file, line)
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void *a;
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long size;
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int type;
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int action;
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const char *file;
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long line;
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{
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malloclog[malloclogptr].addr = a;
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malloclog[malloclogptr].size = size;
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malloclog[malloclogptr].type = type;
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malloclog[malloclogptr].action = action;
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malloclog[malloclogptr].file = file;
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malloclog[malloclogptr].line = line;
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malloclogptr++;
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if (malloclogptr >= MALLOCLOGSIZE)
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malloclogptr = 0;
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}
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static void
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hitmlog(a)
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void *a;
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{
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struct malloclog *lp;
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long l;
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#define PRT \
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if (malloclog[l].addr == a && malloclog[l].action) { \
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lp = &malloclog[l]; \
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printf("malloc log entry %ld:\n", l); \
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printf("\taddr = %p\n", lp->addr); \
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printf("\tsize = %ld\n", lp->size); \
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printf("\ttype = %s\n", memname[lp->type]); \
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printf("\taction = %s\n", lp->action == 1 ? "alloc" : "free"); \
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printf("\tfile = %s\n", lp->file); \
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printf("\tline = %ld\n", lp->line); \
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}
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for (l = malloclogptr; l < MALLOCLOGSIZE; l++)
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PRT
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for (l = 0; l < malloclogptr; l++)
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PRT
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}
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#endif /* MALLOCLOG */
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#ifdef DIAGNOSTIC
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/*
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* This structure provides a set of masks to catch unaligned frees.
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*/
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const long addrmask[] = { 0,
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0x00000001, 0x00000003, 0x00000007, 0x0000000f,
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0x0000001f, 0x0000003f, 0x0000007f, 0x000000ff,
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0x000001ff, 0x000003ff, 0x000007ff, 0x00000fff,
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0x00001fff, 0x00003fff, 0x00007fff, 0x0000ffff,
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};
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/*
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* The WEIRD_ADDR is used as known text to copy into free objects so
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* that modifications after frees can be detected.
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*/
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#define WEIRD_ADDR ((unsigned) 0xdeadbeef)
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#ifdef DEBUG
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#define MAX_COPY PAGE_SIZE
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#else
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#define MAX_COPY 32
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#endif
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/*
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* Normally the freelist structure is used only to hold the list pointer
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* for free objects. However, when running with diagnostics, the first
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* 8 bytes of the structure is unused except for diagnostic information,
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* and the free list pointer is at offst 8 in the structure. Since the
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* first 8 bytes is the portion of the structure most often modified, this
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* helps to detect memory reuse problems and avoid free list corruption.
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*/
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struct freelist {
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int32_t spare0;
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int16_t type;
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int16_t spare1;
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caddr_t next;
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};
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#else /* !DIAGNOSTIC */
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struct freelist {
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caddr_t next;
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};
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#endif /* DIAGNOSTIC */
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/*
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* Allocate a block of memory
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*/
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#ifdef MALLOCLOG
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void *
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_malloc(size, type, flags, file, line)
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unsigned long size;
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int type, flags;
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const char *file;
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long line;
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#else
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void *
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malloc(size, type, flags)
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unsigned long size;
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int type, flags;
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#endif /* MALLOCLOG */
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{
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struct kmembuckets *kbp;
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struct kmemusage *kup;
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struct freelist *freep;
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long indx, npg, allocsize;
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int s;
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caddr_t va, cp, savedlist;
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#ifdef DIAGNOSTIC
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int32_t *end, *lp;
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int copysize;
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const char *savedtype;
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#endif
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#ifdef KMEMSTATS
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struct kmemstats *ksp = &kmemstats[type];
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if (__predict_false(((unsigned long)type) > M_LAST))
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panic("malloc - bogus type");
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#endif
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indx = BUCKETINDX(size);
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kbp = &bucket[indx];
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s = splvm();
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#ifdef KMEMSTATS
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while (ksp->ks_memuse >= ksp->ks_limit) {
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if (flags & M_NOWAIT) {
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splx(s);
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return ((void *) NULL);
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}
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if (ksp->ks_limblocks < 65535)
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ksp->ks_limblocks++;
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tsleep((caddr_t)ksp, PSWP+2, memname[type], 0);
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}
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ksp->ks_size |= 1 << indx;
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#endif
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#ifdef DIAGNOSTIC
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copysize = 1 << indx < MAX_COPY ? 1 << indx : MAX_COPY;
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#endif
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if (kbp->kb_next == NULL) {
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kbp->kb_last = NULL;
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if (size > MAXALLOCSAVE)
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allocsize = roundup(size, PAGE_SIZE);
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else
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allocsize = 1 << indx;
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npg = btoc(allocsize);
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va = (caddr_t) uvm_km_kmemalloc(kmem_map, uvmexp.kmem_object,
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(vsize_t)ctob(npg),
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(flags & M_NOWAIT) ? UVM_KMF_NOWAIT : 0);
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if (__predict_false(va == NULL)) {
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/*
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* Kmem_malloc() can return NULL, even if it can
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* wait, if there is no map space avaiable, because
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* it can't fix that problem. Neither can we,
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* right now. (We should release pages which
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* are completely free and which are in buckets
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* with too many free elements.)
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*/
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if ((flags & M_NOWAIT) == 0)
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panic("malloc: out of space in kmem_map");
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splx(s);
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return ((void *) NULL);
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}
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#ifdef KMEMSTATS
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kbp->kb_total += kbp->kb_elmpercl;
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#endif
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kup = btokup(va);
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kup->ku_indx = indx;
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if (allocsize > MAXALLOCSAVE) {
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if (npg > 65535)
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panic("malloc: allocation too large");
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kup->ku_pagecnt = npg;
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#ifdef KMEMSTATS
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ksp->ks_memuse += allocsize;
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#endif
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goto out;
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}
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#ifdef KMEMSTATS
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kup->ku_freecnt = kbp->kb_elmpercl;
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kbp->kb_totalfree += kbp->kb_elmpercl;
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#endif
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/*
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* Just in case we blocked while allocating memory,
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* and someone else also allocated memory for this
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* bucket, don't assume the list is still empty.
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*/
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savedlist = kbp->kb_next;
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kbp->kb_next = cp = va + (npg << PAGE_SHIFT) - allocsize;
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for (;;) {
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freep = (struct freelist *)cp;
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#ifdef DIAGNOSTIC
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/*
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* Copy in known text to detect modification
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* after freeing.
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*/
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end = (int32_t *)&cp[copysize];
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for (lp = (int32_t *)cp; lp < end; lp++)
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*lp = WEIRD_ADDR;
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freep->type = M_FREE;
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#endif /* DIAGNOSTIC */
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if (cp <= va)
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break;
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cp -= allocsize;
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freep->next = cp;
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}
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freep->next = savedlist;
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if (kbp->kb_last == NULL)
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kbp->kb_last = (caddr_t)freep;
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}
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va = kbp->kb_next;
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kbp->kb_next = ((struct freelist *)va)->next;
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#ifdef DIAGNOSTIC
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freep = (struct freelist *)va;
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savedtype = (unsigned)freep->type < M_LAST ?
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memname[freep->type] : "???";
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if (kbp->kb_next) {
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int rv;
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vaddr_t addr = (vaddr_t)kbp->kb_next;
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vm_map_lock(kmem_map);
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rv = uvm_map_checkprot(kmem_map, addr,
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addr + sizeof(struct freelist),
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VM_PROT_WRITE);
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vm_map_unlock(kmem_map);
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if (__predict_false(rv == 0)) {
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printf(
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"%s %ld of object %p size %ld %s %s (invalid addr %p)\n",
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"Data modified on freelist: word",
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(long)((int32_t *)&kbp->kb_next - (int32_t *)kbp),
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va, size, "previous type", savedtype, kbp->kb_next);
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#ifdef MALLOCLOG
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hitmlog(va);
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#endif
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kbp->kb_next = NULL;
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}
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}
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/* Fill the fields that we've used with WEIRD_ADDR */
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#if BYTE_ORDER == BIG_ENDIAN
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freep->type = WEIRD_ADDR >> 16;
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#endif
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#if BYTE_ORDER == LITTLE_ENDIAN
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freep->type = (short)WEIRD_ADDR;
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#endif
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end = (int32_t *)&freep->next +
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(sizeof(freep->next) / sizeof(int32_t));
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for (lp = (int32_t *)&freep->next; lp < end; lp++)
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*lp = WEIRD_ADDR;
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/* and check that the data hasn't been modified. */
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end = (int32_t *)&va[copysize];
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for (lp = (int32_t *)va; lp < end; lp++) {
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if (__predict_true(*lp == WEIRD_ADDR))
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continue;
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printf("%s %ld of object %p size %ld %s %s (0x%x != 0x%x)\n",
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"Data modified on freelist: word",
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(long)(lp - (int32_t *)va), va, size, "previous type",
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savedtype, *lp, WEIRD_ADDR);
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#ifdef MALLOCLOG
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hitmlog(va);
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#endif
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break;
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}
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freep->spare0 = 0;
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#endif /* DIAGNOSTIC */
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#ifdef KMEMSTATS
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kup = btokup(va);
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if (kup->ku_indx != indx)
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panic("malloc: wrong bucket");
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if (kup->ku_freecnt == 0)
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panic("malloc: lost data");
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kup->ku_freecnt--;
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kbp->kb_totalfree--;
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ksp->ks_memuse += 1 << indx;
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out:
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kbp->kb_calls++;
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ksp->ks_inuse++;
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ksp->ks_calls++;
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if (ksp->ks_memuse > ksp->ks_maxused)
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ksp->ks_maxused = ksp->ks_memuse;
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#else
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out:
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#endif
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#ifdef MALLOCLOG
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domlog(va, size, type, 1, file, line);
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#endif
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splx(s);
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return ((void *) va);
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}
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/*
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* Free a block of memory allocated by malloc.
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*/
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#ifdef MALLOCLOG
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void
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_free(addr, type, file, line)
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void *addr;
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int type;
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const char *file;
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long line;
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#else
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void
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free(addr, type)
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void *addr;
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int type;
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#endif /* MALLOCLOG */
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{
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struct kmembuckets *kbp;
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struct kmemusage *kup;
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struct freelist *freep;
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long size;
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int s;
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#ifdef DIAGNOSTIC
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caddr_t cp;
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int32_t *end, *lp;
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long alloc, copysize;
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#endif
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#ifdef KMEMSTATS
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struct kmemstats *ksp = &kmemstats[type];
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#endif
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#ifdef DIAGNOSTIC
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/*
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* Ensure that we're free'ing something that we could
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* have allocated in the first place. That is, check
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* to see that the address is within kmem_map.
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*/
|
|
if (__predict_false((vaddr_t)addr < kmem_map->header.start ||
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(vaddr_t)addr >= kmem_map->header.end))
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panic("free: addr %p not within kmem_map", addr);
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#endif
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|
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kup = btokup(addr);
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size = 1 << kup->ku_indx;
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kbp = &bucket[kup->ku_indx];
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s = splvm();
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#ifdef MALLOCLOG
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domlog(addr, 0, type, 2, file, line);
|
|
#endif
|
|
#ifdef DIAGNOSTIC
|
|
/*
|
|
* Check for returns of data that do not point to the
|
|
* beginning of the allocation.
|
|
*/
|
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if (size > PAGE_SIZE)
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alloc = addrmask[BUCKETINDX(PAGE_SIZE)];
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else
|
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alloc = addrmask[kup->ku_indx];
|
|
if (((u_long)addr & alloc) != 0)
|
|
panic("free: unaligned addr %p, size %ld, type %s, mask %ld\n",
|
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addr, size, memname[type], alloc);
|
|
#endif /* DIAGNOSTIC */
|
|
if (size > MAXALLOCSAVE) {
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uvm_km_free(kmem_map, (vaddr_t)addr, ctob(kup->ku_pagecnt));
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|
#ifdef KMEMSTATS
|
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size = kup->ku_pagecnt << PGSHIFT;
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ksp->ks_memuse -= size;
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kup->ku_indx = 0;
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kup->ku_pagecnt = 0;
|
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if (ksp->ks_memuse + size >= ksp->ks_limit &&
|
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ksp->ks_memuse < ksp->ks_limit)
|
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wakeup((caddr_t)ksp);
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ksp->ks_inuse--;
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kbp->kb_total -= 1;
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#endif
|
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splx(s);
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return;
|
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}
|
|
freep = (struct freelist *)addr;
|
|
#ifdef DIAGNOSTIC
|
|
/*
|
|
* Check for multiple frees. Use a quick check to see if
|
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* it looks free before laboriously searching the freelist.
|
|
*/
|
|
if (__predict_false(freep->spare0 == WEIRD_ADDR)) {
|
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for (cp = kbp->kb_next; cp;
|
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cp = ((struct freelist *)cp)->next) {
|
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if (addr != cp)
|
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continue;
|
|
printf("multiply freed item %p\n", addr);
|
|
#ifdef MALLOCLOG
|
|
hitmlog(addr);
|
|
#endif
|
|
panic("free: duplicated free");
|
|
}
|
|
}
|
|
#ifdef LOCKDEBUG
|
|
/*
|
|
* Check if we're freeing a locked simple lock.
|
|
*/
|
|
simple_lock_freecheck(addr, (char *)addr + size);
|
|
#endif
|
|
/*
|
|
* Copy in known text to detect modification after freeing
|
|
* and to make it look free. Also, save the type being freed
|
|
* so we can list likely culprit if modification is detected
|
|
* when the object is reallocated.
|
|
*/
|
|
copysize = size < MAX_COPY ? size : MAX_COPY;
|
|
end = (int32_t *)&((caddr_t)addr)[copysize];
|
|
for (lp = (int32_t *)addr; lp < end; lp++)
|
|
*lp = WEIRD_ADDR;
|
|
freep->type = type;
|
|
#endif /* DIAGNOSTIC */
|
|
#ifdef KMEMSTATS
|
|
kup->ku_freecnt++;
|
|
if (kup->ku_freecnt >= kbp->kb_elmpercl) {
|
|
if (kup->ku_freecnt > kbp->kb_elmpercl)
|
|
panic("free: multiple frees");
|
|
else if (kbp->kb_totalfree > kbp->kb_highwat)
|
|
kbp->kb_couldfree++;
|
|
}
|
|
kbp->kb_totalfree++;
|
|
ksp->ks_memuse -= size;
|
|
if (ksp->ks_memuse + size >= ksp->ks_limit &&
|
|
ksp->ks_memuse < ksp->ks_limit)
|
|
wakeup((caddr_t)ksp);
|
|
ksp->ks_inuse--;
|
|
#endif
|
|
if (kbp->kb_next == NULL)
|
|
kbp->kb_next = addr;
|
|
else
|
|
((struct freelist *)kbp->kb_last)->next = addr;
|
|
freep->next = NULL;
|
|
kbp->kb_last = addr;
|
|
splx(s);
|
|
}
|
|
|
|
/*
|
|
* Change the size of a block of memory.
|
|
*/
|
|
void *
|
|
realloc(curaddr, newsize, type, flags)
|
|
void *curaddr;
|
|
unsigned long newsize;
|
|
int type, flags;
|
|
{
|
|
struct kmemusage *kup;
|
|
long cursize;
|
|
void *newaddr;
|
|
#ifdef DIAGNOSTIC
|
|
long alloc;
|
|
#endif
|
|
|
|
/*
|
|
* Realloc() with a NULL pointer is the same as malloc().
|
|
*/
|
|
if (curaddr == NULL)
|
|
return (malloc(newsize, type, flags));
|
|
|
|
/*
|
|
* Realloc() with zero size is the same as free().
|
|
*/
|
|
if (newsize == 0) {
|
|
free(curaddr, type);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Find out how large the old allocation was (and do some
|
|
* sanity checking).
|
|
*/
|
|
kup = btokup(curaddr);
|
|
cursize = 1 << kup->ku_indx;
|
|
|
|
#ifdef DIAGNOSTIC
|
|
/*
|
|
* Check for returns of data that do not point to the
|
|
* beginning of the allocation.
|
|
*/
|
|
if (cursize > PAGE_SIZE)
|
|
alloc = addrmask[BUCKETINDX(PAGE_SIZE)];
|
|
else
|
|
alloc = addrmask[kup->ku_indx];
|
|
if (((u_long)curaddr & alloc) != 0)
|
|
panic("realloc: unaligned addr %p, size %ld, type %s, mask %ld\n",
|
|
curaddr, cursize, memname[type], alloc);
|
|
#endif /* DIAGNOSTIC */
|
|
|
|
if (cursize > MAXALLOCSAVE)
|
|
cursize = ctob(kup->ku_pagecnt);
|
|
|
|
/*
|
|
* If we already actually have as much as they want, we're done.
|
|
*/
|
|
if (newsize <= cursize)
|
|
return (curaddr);
|
|
|
|
/*
|
|
* Can't satisfy the allocation with the existing block.
|
|
* Allocate a new one and copy the data.
|
|
*/
|
|
newaddr = malloc(newsize, type, flags);
|
|
if (__predict_false(newaddr == NULL)) {
|
|
/*
|
|
* Malloc() failed, because flags included M_NOWAIT.
|
|
* Return NULL to indicate that failure. The old
|
|
* pointer is still valid.
|
|
*/
|
|
return NULL;
|
|
}
|
|
memcpy(newaddr, curaddr, cursize);
|
|
|
|
/*
|
|
* We were successful: free the old allocation and return
|
|
* the new one.
|
|
*/
|
|
free(curaddr, type);
|
|
return (newaddr);
|
|
}
|
|
|
|
/*
|
|
* Compute the number of pages that kmem_map will map, that is,
|
|
* the size of the kernel malloc arena.
|
|
*/
|
|
void
|
|
kmeminit_nkmempages()
|
|
{
|
|
int npages;
|
|
|
|
if (nkmempages != 0) {
|
|
/*
|
|
* It's already been set (by us being here before, or
|
|
* by patching or kernel config options), bail out now.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* We use the following (simple) formula:
|
|
*
|
|
* - Starting point is physical memory / 4.
|
|
*
|
|
* - Clamp it down to NKMEMPAGES_MAX.
|
|
*
|
|
* - Round it up to NKMEMPAGES_MIN.
|
|
*/
|
|
npages = physmem / 4;
|
|
|
|
if (npages > NKMEMPAGES_MAX)
|
|
npages = NKMEMPAGES_MAX;
|
|
|
|
if (npages < NKMEMPAGES_MIN)
|
|
npages = NKMEMPAGES_MIN;
|
|
|
|
nkmempages = npages;
|
|
}
|
|
|
|
/*
|
|
* Initialize the kernel memory allocator
|
|
*/
|
|
void
|
|
kmeminit()
|
|
{
|
|
#ifdef KMEMSTATS
|
|
long indx;
|
|
#endif
|
|
|
|
#if ((MAXALLOCSAVE & (MAXALLOCSAVE - 1)) != 0)
|
|
ERROR!_kmeminit:_MAXALLOCSAVE_not_power_of_2
|
|
#endif
|
|
#if (MAXALLOCSAVE > MINALLOCSIZE * 32768)
|
|
ERROR!_kmeminit:_MAXALLOCSAVE_too_big
|
|
#endif
|
|
#if (MAXALLOCSAVE < NBPG)
|
|
ERROR!_kmeminit:_MAXALLOCSAVE_too_small
|
|
#endif
|
|
|
|
if (sizeof(struct freelist) > (1 << MINBUCKET))
|
|
panic("minbucket too small/struct freelist too big");
|
|
|
|
/*
|
|
* Compute the number of kmem_map pages, if we have not
|
|
* done so already.
|
|
*/
|
|
kmeminit_nkmempages();
|
|
|
|
kmemusage = (struct kmemusage *) uvm_km_zalloc(kernel_map,
|
|
(vsize_t)(nkmempages * sizeof(struct kmemusage)));
|
|
kmem_map = uvm_km_suballoc(kernel_map, (vaddr_t *)&kmembase,
|
|
(vaddr_t *)&kmemlimit, (vsize_t)(nkmempages << PAGE_SHIFT),
|
|
VM_MAP_INTRSAFE, FALSE, &kmem_map_store.vmi_map);
|
|
#ifdef KMEMSTATS
|
|
for (indx = 0; indx < MINBUCKET + 16; indx++) {
|
|
if (1 << indx >= PAGE_SIZE)
|
|
bucket[indx].kb_elmpercl = 1;
|
|
else
|
|
bucket[indx].kb_elmpercl = PAGE_SIZE / (1 << indx);
|
|
bucket[indx].kb_highwat = 5 * bucket[indx].kb_elmpercl;
|
|
}
|
|
for (indx = 0; indx < M_LAST; indx++)
|
|
kmemstats[indx].ks_limit = (nkmempages << PAGE_SHIFT) * 6 / 10;
|
|
#endif
|
|
}
|
|
|
|
#ifdef DDB
|
|
#include <ddb/db_output.h>
|
|
|
|
/*
|
|
* Dump kmem statistics from ddb.
|
|
*
|
|
* usage: call dump_kmemstats
|
|
*/
|
|
void dump_kmemstats __P((void));
|
|
|
|
void
|
|
dump_kmemstats()
|
|
{
|
|
#ifdef KMEMSTATS
|
|
const char *name;
|
|
int i;
|
|
|
|
for (i = 0; i < M_LAST; i++) {
|
|
name = memname[i] ? memname[i] : "";
|
|
|
|
db_printf("%2d %s%.*s %ld\n", i, name,
|
|
(int)(20 - strlen(name)), " ",
|
|
kmemstats[i].ks_memuse);
|
|
}
|
|
#else
|
|
db_printf("Kmem stats are not being collected.\n");
|
|
#endif /* KMEMSTATS */
|
|
}
|
|
#endif /* DDB */
|