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| author | alc <alc@FreeBSD.org> | 2004-07-15 18:00:43 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2004-07-15 18:00:43 +0000 |
| commit | 123cfa6b6464882431662931da12282fdae27c31 (patch) | |
| tree | 69cdf9b62bb15fd8fb4fcd13d7dc53217029e5ad /sys/powerpc | |
| parent | c9b72f6bbfe07882de4c1ff97b23d8419bb01672 (diff) | |
| download | FreeBSD-src-123cfa6b6464882431662931da12282fdae27c31.zip FreeBSD-src-123cfa6b6464882431662931da12282fdae27c31.tar.gz | |
Push down the acquisition and release of the page queues lock into
pmap_protect() and pmap_remove(). In general, they require the lock in
order to modify a page's pv list or flags. In some cases, however,
pmap_protect() can avoid acquiring the lock.
Diffstat (limited to 'sys/powerpc')
| -rw-r--r-- | sys/powerpc/aim/mmu_oea.c | 4 | ||||
| -rw-r--r-- | sys/powerpc/powerpc/mmu_oea.c | 4 | ||||
| -rw-r--r-- | sys/powerpc/powerpc/pmap.c | 4 |
3 files changed, 12 insertions, 0 deletions
diff --git a/sys/powerpc/aim/mmu_oea.c b/sys/powerpc/aim/mmu_oea.c index 01ce771..d9ad966 100644 --- a/sys/powerpc/aim/mmu_oea.c +++ b/sys/powerpc/aim/mmu_oea.c @@ -1460,6 +1460,7 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) return; } + vm_page_lock_queues(); for (; sva < eva; sva += PAGE_SIZE) { pvo = pmap_pvo_find_va(pm, sva, &pteidx); if (pvo == NULL) @@ -1485,6 +1486,7 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) if (pt != NULL) pmap_pte_change(pt, &pvo->pvo_pte, pvo->pvo_vaddr); } + vm_page_unlock_queues(); } /* @@ -1547,12 +1549,14 @@ pmap_remove(pmap_t pm, vm_offset_t sva, vm_offset_t eva) struct pvo_entry *pvo; int pteidx; + vm_page_lock_queues(); for (; sva < eva; sva += PAGE_SIZE) { pvo = pmap_pvo_find_va(pm, sva, &pteidx); if (pvo != NULL) { pmap_pvo_remove(pvo, pteidx); } } + vm_page_unlock_queues(); } /* diff --git a/sys/powerpc/powerpc/mmu_oea.c b/sys/powerpc/powerpc/mmu_oea.c index 01ce771..d9ad966 100644 --- a/sys/powerpc/powerpc/mmu_oea.c +++ b/sys/powerpc/powerpc/mmu_oea.c @@ -1460,6 +1460,7 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) return; } + vm_page_lock_queues(); for (; sva < eva; sva += PAGE_SIZE) { pvo = pmap_pvo_find_va(pm, sva, &pteidx); if (pvo == NULL) @@ -1485,6 +1486,7 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) if (pt != NULL) pmap_pte_change(pt, &pvo->pvo_pte, pvo->pvo_vaddr); } + vm_page_unlock_queues(); } /* @@ -1547,12 +1549,14 @@ pmap_remove(pmap_t pm, vm_offset_t sva, vm_offset_t eva) struct pvo_entry *pvo; int pteidx; + vm_page_lock_queues(); for (; sva < eva; sva += PAGE_SIZE) { pvo = pmap_pvo_find_va(pm, sva, &pteidx); if (pvo != NULL) { pmap_pvo_remove(pvo, pteidx); } } + vm_page_unlock_queues(); } /* diff --git a/sys/powerpc/powerpc/pmap.c b/sys/powerpc/powerpc/pmap.c index 01ce771..d9ad966 100644 --- a/sys/powerpc/powerpc/pmap.c +++ b/sys/powerpc/powerpc/pmap.c @@ -1460,6 +1460,7 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) return; } + vm_page_lock_queues(); for (; sva < eva; sva += PAGE_SIZE) { pvo = pmap_pvo_find_va(pm, sva, &pteidx); if (pvo == NULL) @@ -1485,6 +1486,7 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) if (pt != NULL) pmap_pte_change(pt, &pvo->pvo_pte, pvo->pvo_vaddr); } + vm_page_unlock_queues(); } /* @@ -1547,12 +1549,14 @@ pmap_remove(pmap_t pm, vm_offset_t sva, vm_offset_t eva) struct pvo_entry *pvo; int pteidx; + vm_page_lock_queues(); for (; sva < eva; sva += PAGE_SIZE) { pvo = pmap_pvo_find_va(pm, sva, &pteidx); if (pvo != NULL) { pmap_pvo_remove(pvo, pteidx); } } + vm_page_unlock_queues(); } /* |
