uma_machdep.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu>
    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 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 #include <sys/param.h>
   33 #include <sys/malloc.h>
   34 #include <vm/vm.h>
   35 #include <vm/vm_param.h>
   36 #include <vm/vm_page.h>
   37 #include <vm/vm_pageout.h>
   38 #include <vm/vm_dumpset.h>
   39 #include <vm/uma.h>
   40 #include <vm/uma_int.h>
   41 
   42 void *
   43 uma_small_alloc(uma_zone_t zone, vm_size_t bytes, int domain, u_int8_t *flags,
   44     int wait)
   45 {
   46         vm_paddr_t pa;
   47         vm_page_t m;
   48         int pflags;
   49         void *va;
   50 
   51         *flags = UMA_SLAB_PRIV;
   52         pflags = malloc2vm_flags(wait) | VM_ALLOC_WIRED;
   53 #ifndef __mips_n64
   54         pflags &= ~(VM_ALLOC_WAITOK | VM_ALLOC_WAITFAIL);
   55         pflags |= VM_ALLOC_NOWAIT;
   56 #endif
   57 
   58         for (;;) {
   59                 m = vm_page_alloc_freelist_domain(domain, VM_FREELIST_DIRECT,
   60                     pflags);
   61 #ifndef __mips_n64
   62                 if (m == NULL && vm_page_reclaim_contig(pflags, 1,
   63                     0, MIPS_KSEG0_LARGEST_PHYS, PAGE_SIZE, 0))
   64                         continue;
   65 #endif
   66                 if (m != NULL)
   67                         break;
   68                 if ((wait & M_NOWAIT) != 0)
   69                         return (NULL);
   70                 vm_wait(NULL);
   71         }
   72 
   73         pa = VM_PAGE_TO_PHYS(m);
   74         if ((wait & M_NODUMP) == 0)
   75                 dump_add_page(pa);
   76         va = (void *)MIPS_PHYS_TO_DIRECT(pa);
   77         if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
   78                 bzero(va, PAGE_SIZE);
   79         return (va);
   80 }
   81 
   82 void
   83 uma_small_free(void *mem, vm_size_t size, u_int8_t flags)
   84 {
   85         vm_page_t m;
   86         vm_paddr_t pa;
   87 
   88         pa = MIPS_DIRECT_TO_PHYS((vm_offset_t)mem);
   89         dump_drop_page(pa);
   90         m = PHYS_TO_VM_PAGE(pa);
   91         vm_page_unwire_noq(m);
   92         vm_page_free(m);
   93 }

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

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