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Implement UMA_MD_SMALL_ALLOC, since the BAT registers allow direct

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addressing of memory. Makes a substantial improvement for apps that
stress the limited amount of KVM on PPC (e.g. untarring the ports tree).

uma_machdep.c stolen from amd64/ia64.
This commit is contained in:
Peter Grehan 2004-01-29 00:32:22 +00:00
parent ac498460b2
commit db55e39aa1
4 changed files with 171 additions and 0 deletions
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1
sys/conf/files.powerpc
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@ -58,6 +58,7 @@ powerpc/powerpc/syncicache.c standard
powerpc/powerpc/sys_machdep.c standard
powerpc/powerpc/swtch.S standard
powerpc/powerpc/trap.c standard
powerpc/powerpc/uma_machdep.c standard
powerpc/powerpc/vm_machdep.c standard
powerpc/powerpc/db_disasm.c optional ddb

82
sys/powerpc/aim/uma_machdep.c Normal file
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@ -0,0 +1,82 @@
/*
* Copyright (c) 2003 The FreeBSD Project
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <vm/vm_pageout.h>
#include <vm/uma.h>
#include <vm/uma_int.h>
#include <machine/vmparam.h>
void *
uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
{
static vm_pindex_t color;
void *va;
vm_page_t m;
int pflags;
*flags = UMA_SLAB_PRIV;
if ((wait & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT)
pflags = VM_ALLOC_INTERRUPT;
else
pflags = VM_ALLOC_SYSTEM;
if (wait & M_ZERO)
pflags |= VM_ALLOC_ZERO;
for (;;) {
m = vm_page_alloc(NULL, color++, pflags | VM_ALLOC_NOOBJ);
if (m == NULL) {
if (wait & M_NOWAIT)
return (NULL);
VM_WAIT;
} else
break;
}
va = (void *) VM_PAGE_TO_PHYS(m);
if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
bzero(va, PAGE_SIZE);
return (va);
}
void
uma_small_free(void *mem, int size, u_int8_t flags)
{
vm_page_t m;
m = PHYS_TO_VM_PAGE((u_int32_t)mem);
vm_page_lock_queues();
vm_page_free(m);
vm_page_unlock_queues();
}

6
sys/powerpc/include/vmparam.h
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@ -81,6 +81,12 @@
*/
#define MAXSLP 20
/*
* Use the direct-mapped BAT registers for UMA small allocs. This
* takes pressure off the small amount of available KVA.
*/
#define UMA_MD_SMALL_ALLOC
/*
* Would like to have MAX addresses = 0, but this doesn't (currently) work
*/

82
sys/powerpc/powerpc/uma_machdep.c Normal file
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@ -0,0 +1,82 @@
/*
* Copyright (c) 2003 The FreeBSD Project
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <vm/vm_pageout.h>
#include <vm/uma.h>
#include <vm/uma_int.h>
#include <machine/vmparam.h>
void *
uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
{
static vm_pindex_t color;
void *va;
vm_page_t m;
int pflags;
*flags = UMA_SLAB_PRIV;
if ((wait & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT)
pflags = VM_ALLOC_INTERRUPT;
else
pflags = VM_ALLOC_SYSTEM;
if (wait & M_ZERO)
pflags |= VM_ALLOC_ZERO;
for (;;) {
m = vm_page_alloc(NULL, color++, pflags | VM_ALLOC_NOOBJ);
if (m == NULL) {
if (wait & M_NOWAIT)
return (NULL);
VM_WAIT;
} else
break;
}
va = (void *) VM_PAGE_TO_PHYS(m);
if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
bzero(va, PAGE_SIZE);
return (va);
}
void
uma_small_free(void *mem, int size, u_int8_t flags)
{
vm_page_t m;
m = PHYS_TO_VM_PAGE((u_int32_t)mem);
vm_page_lock_queues();
vm_page_free(m);
vm_page_unlock_queues();
}