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pmap_qremove:

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Eliminate unnecessary TLB shootdowns.
This commit is contained in:
alc 1999-05-18 06:01:49 +00:00
parent f2cbc8ce7a
commit 6591f9981c
2 changed files with 34 additions and 8 deletions
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21
sys/amd64/amd64/pmap.c
View File

@ -39,7 +39,7 @@
* SUCH DAMAGE.
*
* from: @(#)pmap.c 7.7 (Berkeley) 5/12/91
* $Id: pmap.c,v 1.233 1999/04/25 18:40:05 alc Exp $
* $Id: pmap.c,v 1.234 1999/04/28 01:03:23 luoqi Exp $
*/
/*
@ -851,12 +851,25 @@ pmap_qremove(va, count)
vm_offset_t va;
int count;
{
int i;
vm_offset_t end_va;
for (i = 0; i < count; i++) {
pmap_kremove(va);
end_va = va + count*PAGE_SIZE;
while (va < end_va) {
unsigned *pte;
pte = (unsigned *)vtopte(va);
*pte = 0;
#ifdef SMP
cpu_invlpg((void *)va);
#else
invltlb_1pg(va);
#endif
va += PAGE_SIZE;
}
#ifdef SMP
smp_invltlb();
#endif
}
static vm_page_t

21
sys/i386/i386/pmap.c
View File

@ -39,7 +39,7 @@
* SUCH DAMAGE.
*
* from: @(#)pmap.c 7.7 (Berkeley) 5/12/91
* $Id: pmap.c,v 1.233 1999/04/25 18:40:05 alc Exp $
* $Id: pmap.c,v 1.234 1999/04/28 01:03:23 luoqi Exp $
*/
/*
@ -851,12 +851,25 @@ pmap_qremove(va, count)
vm_offset_t va;
int count;
{
int i;
vm_offset_t end_va;
for (i = 0; i < count; i++) {
pmap_kremove(va);
end_va = va + count*PAGE_SIZE;
while (va < end_va) {
unsigned *pte;
pte = (unsigned *)vtopte(va);
*pte = 0;
#ifdef SMP
cpu_invlpg((void *)va);
#else
invltlb_1pg(va);
#endif
va += PAGE_SIZE;
}
#ifdef SMP
smp_invltlb();
#endif
}
static vm_page_t