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Fix resident page accounting for the kernel pmap.

This commit is contained in:
scw 2003-07-03 13:18:42 +00:00
parent cdcc2dcba2
commit b8b2b1d895
1 changed files with 10 additions and 4 deletions
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14
sys/arch/powerpc/ibm4xx/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.21 2003/05/10 21:10:36 thorpej Exp $ */
/* $NetBSD: pmap.c,v 1.22 2003/07/03 13:18:42 scw Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
@ -200,20 +200,28 @@ pte_enter(struct pmap *pm, vaddr_t va, u_int pte)
{
int seg = STIDX(va);
int ptn = PTIDX(va);
u_int oldpte;
paddr_t pa;
if (!pm->pm_ptbl[seg]) {
/* Don't allocate a page to clear a non-existent mapping. */
if (!pte) return (1);
if (!pte) return (0);
/* Allocate a page XXXX this will sleep! */
pa = 0;
pm->pm_ptbl[seg] =
(uint *)uvm_km_alloc1(kernel_map, PAGE_SIZE, 1);
}
oldpte = pm->pm_ptbl[seg][ptn];
pm->pm_ptbl[seg][ptn] = pte;
/* Flush entry. */
ppc4xx_tlb_flush(va, pm->pm_ctx);
if (oldpte != pte) {
if (pte == 0)
pm->pm_stats.resident_count--;
else
pm->pm_stats.resident_count++;
}
return (1);
}
@ -874,7 +882,6 @@ pmap_enter(struct pmap *pm, vaddr_t va, paddr_t pa, vm_prot_t prot, int flags)
}
s = splvm();
pm->pm_stats.resident_count++;
/* Insert page into page table. */
pte_enter(pm, va, tte);
@ -972,7 +979,6 @@ pmap_kenter_pa(vaddr_t va, paddr_t pa, vm_prot_t prot)
}
s = splvm();
pm->pm_stats.resident_count++;
/* Insert page into page table. */
pte_enter(pm, va, tte);