uma_machdep.c

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    1 /*-
    2  * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    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.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   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
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/11.2/sys/arm64/arm64/uma_machdep.c 331017 2018-03-15 19:08:33Z kevans $");
   29 
   30 #include <sys/param.h>
   31 #include <sys/lock.h>
   32 #include <sys/malloc.h>
   33 #include <sys/mutex.h>
   34 #include <sys/systm.h>
   35 #include <sys/vmmeter.h>
   36 #include <vm/vm.h>
   37 #include <vm/vm_page.h>
   38 #include <vm/vm_pageout.h>
   39 #include <vm/uma.h>
   40 #include <vm/uma_int.h>
   41 #include <machine/md_var.h>
   42 #include <machine/vmparam.h>
   43 
   44 void *
   45 uma_small_alloc(uma_zone_t zone, vm_size_t bytes, u_int8_t *flags, int wait)
   46 {
   47         vm_page_t m;
   48         vm_paddr_t pa;
   49         void *va;
   50 
   51         *flags = UMA_SLAB_PRIV;
   52         m = vm_page_alloc(NULL, 0,
   53             malloc2vm_flags(wait) | VM_ALLOC_NOOBJ | VM_ALLOC_WIRED);
   54         if (m == NULL)
   55                 return (NULL);
   56         pa = m->phys_addr;
   57         if ((wait & M_NODUMP) == 0)
   58                 dump_add_page(pa);
   59         va = (void *)PHYS_TO_DMAP(pa);
   60         if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
   61                 bzero(va, PAGE_SIZE);
   62         return (va);
   63 }
   64 
   65 void
   66 uma_small_free(void *mem, vm_size_t size, u_int8_t flags)
   67 {
   68         vm_page_t m;
   69         vm_paddr_t pa;
   70 
   71         pa = DMAP_TO_PHYS((vm_offset_t)mem);
   72         dump_drop_page(pa);
   73         m = PHYS_TO_VM_PAGE(pa);
   74         m->wire_count--;
   75         vm_page_free(m);
   76         atomic_subtract_int(&vm_cnt.v_wire_count, 1);
   77 }

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FreeBSD/Linux Kernel Cross Reference sys/arm64/arm64/uma_machdep.c

FreeBSD/Linux Kernel Cross Reference
sys/arm64/arm64/uma_machdep.c