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- Add support for machine dependant page allocation routines. MD code

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may define UMA_MD_SMALL_ALLOC to make use of this feature.

Reviewed by:	peter, jake
This commit is contained in:
Jeff Roberson 2002-11-01 01:01:27 +00:00
parent 026aa839a4
commit 48eea37508
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=106277
2 changed files with 28 additions and 2 deletions
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22
sys/vm/uma_core.c
View File

@ -81,6 +81,8 @@
#include <vm/uma_int.h>
#include <vm/uma_dbg.h>
#include <machine/vmparam.h>
/*
* This is the zone from which all zones are spawned. The idea is that even
* the zone heads are allocated from the allocator, so we use the bss section
@ -633,10 +635,17 @@ zone_drain(uma_zone_t zone)
if (zone->uz_flags & UMA_ZFLAG_OFFPAGE)
uma_zfree_internal(slabzone, slab, NULL, 0);
if (zone->uz_flags & UMA_ZFLAG_MALLOC)
if (zone->uz_flags & UMA_ZFLAG_MALLOC) {
vm_object_t obj;
if (flags & UMA_SLAB_KMEM)
obj = kmem_object;
else
obj = NULL;
for (i = 0; i < zone->uz_ppera; i++)
vsetobj((vm_offset_t)mem + (i * PAGE_SIZE),
kmem_object);
obj);
}
#ifdef UMA_DEBUG
printf("%s: Returning %d bytes.\n",
zone->uz_name, UMA_SLAB_SIZE * zone->uz_ppera);
@ -1005,6 +1014,12 @@ zone_ctor(void *mem, int size, void *udata)
zone_large_init(zone);
else
zone_small_init(zone);
#ifdef UMA_MD_SMALL_ALLOC
if (zone->uz_ppera == 1) {
zone->uz_allocf = uma_small_alloc;
zone->uz_freef = uma_small_free;
}
#endif /* UMA_MD_SMALL_ALLOC */
if (arg->flags & UMA_ZONE_MTXCLASS)
privlc = 1;
@ -1228,6 +1243,9 @@ uma_startup(void *bootmem)
NULL, NULL, NULL, NULL,
UMA_ALIGN_PTR, UMA_ZONE_INTERNAL);
#ifdef UMA_MD_SMALL_ALLOC
booted = 1;
#endif
#ifdef UMA_DEBUG
printf("UMA startup complete.\n");

8
sys/vm/uma_int.h
View File

@ -374,4 +374,12 @@ vsetobj(vm_offset_t va, vm_object_t obj)
p->flags &= ~PG_SLAB;
}
/*
* The following two functions may be defined by architecture specific code
* if they can provide more effecient allocation functions. This is useful
* for using direct mapped addresses.
*/
void *uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *pflag, int wait);
void uma_small_free(void *mem, int size, u_int8_t flags);
#endif /* VM_UMA_INT_H */