diff options
| author | Artur Grabowski <art@cvs.openbsd.org> | 2001-07-31 14:03:48 +0000 |
|---|---|---|
| committer | Artur Grabowski <art@cvs.openbsd.org> | 2001-07-31 14:03:48 +0000 |
| commit | 6486bc2f1faff9954cb6ccfa3cf8281947133020 (patch) | |
| tree | e11c5530c880bbf2c56e20faae04d1e0d8d0588c /sys | |
| parent | f9629186919d66c170bd0c66abcf560115269294 (diff) | |
Allocate page buckets from kernel_map. This should save a good
amount of kmem_map on machines with lots of physical memory.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/uvm/uvm_page.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/sys/uvm/uvm_page.c b/sys/uvm/uvm_page.c index bca622eeaed..cc6167c2ea8 100644 --- a/sys/uvm/uvm_page.c +++ b/sys/uvm/uvm_page.c @@ -1,5 +1,5 @@ -/* $OpenBSD: uvm_page.c,v 1.19 2001/07/25 14:47:59 art Exp $ */ -/* $NetBSD: uvm_page.c,v 1.29 1999/12/30 16:09:47 eeh Exp $ */ +/* $OpenBSD: uvm_page.c,v 1.20 2001/07/31 14:03:47 art Exp $ */ +/* $NetBSD: uvm_page.c,v 1.30 2000/02/13 03:34:40 thorpej Exp $ */ /* * Copyright (c) 1997 Charles D. Cranor and Washington University. @@ -737,6 +737,7 @@ uvm_page_rehash() int freepages, lcv, bucketcount, s, oldcount; struct pglist *newbuckets, *oldbuckets; struct vm_page *pg; + size_t newsize, oldsize; /* * compute number of pages that can go in the free pool @@ -756,11 +757,19 @@ uvm_page_rehash() bucketcount = bucketcount * 2; /* - * malloc new buckets + * compute the size of the current table and new table. */ - MALLOC(newbuckets, struct pglist *, sizeof(struct pglist) * bucketcount, - M_VMPBUCKET, M_NOWAIT); + oldbuckets = uvm.page_hash; + oldcount = uvm.page_nhash; + oldsize = round_page(sizeof(struct pglist) * oldcount); + newsize = round_page(sizeof(struct pglist) * bucketcount); + + /* + * allocate the new buckets + */ + + newbuckets = (struct pglist *) uvm_km_alloc(kernel_map, newsize); if (newbuckets == NULL) { printf("uvm_page_physrehash: WARNING: could not grow page " "hash table\n"); @@ -775,9 +784,6 @@ uvm_page_rehash() s = splimp(); simple_lock(&uvm.hashlock); - /* swap old for new ... */ - oldbuckets = uvm.page_hash; - oldcount = uvm.page_nhash; uvm.page_hash = newbuckets; uvm.page_nhash = bucketcount; uvm.page_hashmask = bucketcount - 1; /* power of 2 */ @@ -799,7 +805,7 @@ uvm_page_rehash() */ if (oldbuckets != &uvm_bootbucket) - FREE(oldbuckets, M_VMPBUCKET); + uvm_km_free(kernel_map, (vaddr_t) oldbuckets, oldsize); /* * done |