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| author | alc <alc@FreeBSD.org> | 2007-08-21 04:59:34 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2007-08-21 04:59:34 +0000 |
| commit | cbe3361efb4504ce92269266617dfcd1dc27abba (patch) | |
| tree | e09e1fbbb1ae253abdd9df544be4edcfe4b34d8f /sys/amd64 | |
| parent | 0b8ac2d96963570ea8b4d6507ef1ecff0be0e0ba (diff) | |
| download | FreeBSD-src-cbe3361efb4504ce92269266617dfcd1dc27abba.zip FreeBSD-src-cbe3361efb4504ce92269266617dfcd1dc27abba.tar.gz | |
In general, when we map a page into the kernel's address space, we no
longer create a pv entry for that mapping. (The two exceptions are
mappings into the kernel's exec and pipe submaps.) Consequently, there is
no reason for get_pv_entry() to dig deep into the free page queues, i.e.,
use VM_ALLOC_SYSTEM, by default. This revision changes get_pv_entry() to
use VM_ALLOC_NORMAL by default, i.e., before calling pmap_collect() to
reclaim pv entries.
Approved by: re (kensmith)
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index d70fd4b..db7fc1c 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -1722,7 +1722,7 @@ get_pv_entry(pmap_t pmap, int try) static const struct timeval printinterval = { 60, 0 }; static struct timeval lastprint; static vm_pindex_t colour; - int bit, field, page_req; + int bit, field; pv_entry_t pv; struct pv_chunk *pc; vm_page_t m; @@ -1755,8 +1755,7 @@ get_pv_entry(pmap_t pmap, int try) } } /* No free items, allocate another chunk */ - page_req = try ? VM_ALLOC_NORMAL : VM_ALLOC_SYSTEM; - m = vm_page_alloc(NULL, colour, page_req | VM_ALLOC_NOOBJ); + m = vm_page_alloc(NULL, colour, VM_ALLOC_NORMAL | VM_ALLOC_NOOBJ); if (m == NULL) { if (try) { pv_entry_count--; @@ -1775,7 +1774,7 @@ get_pv_entry(pmap_t pmap, int try) PV_STAT(pmap_collect_inactive++); pmap_collect(pmap, &vm_page_queues[PQ_INACTIVE]); m = vm_page_alloc(NULL, colour, - VM_ALLOC_SYSTEM | VM_ALLOC_NOOBJ); + VM_ALLOC_NORMAL | VM_ALLOC_NOOBJ); if (m == NULL) { PV_STAT(pmap_collect_active++); pmap_collect(pmap, &vm_page_queues[PQ_ACTIVE]); |
