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Code Issues Releases Activity

- Enable the use of UMA_MD_PAGE_ALLOC on alpha.

Browse Source 
- Define uma_small_alloc and uma_small_free using K0SEG for virtual
   addresses.

Approved by:	re
This commit is contained in:
Jeff Roberson 2002-11-01 03:34:51 +00:00
parent 3229ed9140
commit eff3a9fd92
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=106281
2 changed files with 44 additions and 7 deletions
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45
sys/alpha/alpha/pmap.c
View File

@ -170,6 +170,7 @@
#include <vm/vm_pageout.h>
#include <vm/vm_pager.h>
#include <vm/uma.h>
#include <vm/uma_int.h>
#include <sys/user.h>
@ -321,7 +322,6 @@ static struct mtx allpmaps_lock;
* Data for the pv entry allocation mechanism
*/
static uma_zone_t pvzone;
static struct vm_object pvzone_obj;
static int pv_entry_count = 0, pv_entry_max = 0, pv_entry_high_water = 0;
static int pmap_pagedaemon_waken = 0;
@ -345,7 +345,6 @@ static int pmap_release_free_page(pmap_t pmap, vm_page_t p);
static vm_page_t _pmap_allocpte(pmap_t pmap, unsigned ptepindex);
static vm_page_t pmap_page_lookup(vm_object_t object, vm_pindex_t pindex);
static int pmap_unuse_pt(pmap_t, vm_offset_t, vm_page_t);
static void *pmap_allocf(uma_zone_t zone, int bytes, u_int8_t *flags, int wait);
#ifdef SMP
static void pmap_invalidate_page_action(void *arg);
static void pmap_invalidate_all_action(void *arg);
@ -566,11 +565,45 @@ pmap_uses_prom_console()
return 0;
}
static void *
pmap_allocf(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
void *
uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
{
static vm_pindex_t color;
vm_page_t m;
int pflags;
void *va;
*flags = UMA_SLAB_PRIV;
return (void *)kmem_alloc(kernel_map, bytes);
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;
m = vm_page_alloc(NULL, color++, pflags | VM_ALLOC_NOOBJ);
if (m) {
va = (void *)ALPHA_PHYS_TO_K0SEG(m->phys_addr);
if ((m->flags & PG_ZERO) == 0)
bzero(va, PAGE_SIZE);
return (va);
}
return (NULL);
}
void
uma_small_free(void *mem, int size, u_int8_t flags)
{
vm_page_t m;
m = PHYS_TO_VM_PAGE(ALPHA_K0SEG_TO_PHYS((vm_offset_t)mem));
vm_page_lock_queues();
vm_page_free(m);
vm_page_unlock_queues();
}
/*
@ -609,7 +642,6 @@ pmap_init(phys_start, phys_end)
initial_pvs = MINPV;
pvzone = uma_zcreate("PV ENTRY", sizeof (struct pv_entry), NULL, NULL,
NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_VM);
uma_zone_set_allocf(pvzone, pmap_allocf);
uma_prealloc(pvzone, initial_pvs);
/*
* object for kernel page table pages
@ -635,7 +667,6 @@ pmap_init2()
TUNABLE_INT_FETCH("vm.pmap.shpgperproc", &shpgperproc);
pv_entry_max = shpgperproc * maxproc + vm_page_array_size;
pv_entry_high_water = 9 * (pv_entry_max / 10);
uma_zone_set_obj(pvzone, &pvzone_obj, pv_entry_max);
}

6
sys/alpha/include/vmparam.h
View File

@ -128,6 +128,12 @@
#define SAFERSS 10 /* nominal ``small'' resident set size
protected against replacement */
/*
* Alpha provides a machine specific single page allocator through the use
* of K0SEG.
*/
#define UMA_MD_SMALL_ALLOC
/*
* Mach derived constants
*/