diff options
Diffstat (limited to 'sys/powerpc/aim/mmu_oea.c')
| -rw-r--r-- | sys/powerpc/aim/mmu_oea.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/sys/powerpc/aim/mmu_oea.c b/sys/powerpc/aim/mmu_oea.c index 0ba2131..2bd4633 100644 --- a/sys/powerpc/aim/mmu_oea.c +++ b/sys/powerpc/aim/mmu_oea.c @@ -936,6 +936,19 @@ pmap_clear_reference(vm_page_t m) TODO; } +/* + * pmap_ts_referenced: + * + * Return a count of reference bits for a page, clearing those bits. + * It is not necessary for every reference bit to be cleared, but it + * is necessary that 0 only be returned when there are truly no + * reference bits set. + * + * XXX: The exact number of bits to check and clear is a matter that + * should be tested and standardized at some point in the future for + * optimal aging of shared pages. + */ + int pmap_ts_referenced(vm_page_t m) { @@ -1160,8 +1173,15 @@ pmap_pageable(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, { } +/* + * Returns true if the pmap's pv is one of the first + * 16 pvs linked to from this page. This count may + * be changed upwards or downwards in the future; it + * is only necessary that true be returned for a small + * subset of pmaps for proper page aging. + */ boolean_t -pmap_page_exists(pmap_t pmap, vm_page_t m) +pmap_page_exists_quick(pmap_t pmap, vm_page_t m) { TODO; return (0); |
