diff options
| author | Christoph Lameter <clameter@sgi.com> | 2005-01-04 23:36:59 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-01-04 23:36:59 -0800 |
| commit | 76af7e63a1304bc7ecd93c24320315d2e12df197 (patch) | |
| tree | 4a9ddfaef44d20d5b0f2818665e4889957311d81 /kernel/profile.c | |
| parent | 904e737b7ccca4eb807db430320f0fea7c2a6c9a (diff) | |
[PATCH] Make page allocator aware of requests for zeroed memory
Thisintroduces __GFP_ZERO as an additional gfp_mask element to allow to
request zeroed pages from the page allocator:
- Modifies the page allocator so that it zeroes memory if __GFP_ZERO is
set
- Replace all page zeroing after allocating pages by prior allocations with
allocations using __GFP_ZERO
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/profile.c')
| -rw-r--r-- | kernel/profile.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/kernel/profile.c b/kernel/profile.c index ff62fa98328a..1bf1ec5fe56b 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -326,17 +326,15 @@ static int __devinit profile_cpu_callback(struct notifier_block *info, node = cpu_to_node(cpu); per_cpu(cpu_profile_flip, cpu) = 0; if (!per_cpu(cpu_profile_hits, cpu)[1]) { - page = alloc_pages_node(node, GFP_KERNEL, 0); + page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); if (!page) return NOTIFY_BAD; - clear_highpage(page); per_cpu(cpu_profile_hits, cpu)[1] = page_address(page); } if (!per_cpu(cpu_profile_hits, cpu)[0]) { - page = alloc_pages_node(node, GFP_KERNEL, 0); + page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); if (!page) goto out_free; - clear_highpage(page); per_cpu(cpu_profile_hits, cpu)[0] = page_address(page); } break; @@ -510,16 +508,14 @@ static int __init create_hash_tables(void) int node = cpu_to_node(cpu); struct page *page; - page = alloc_pages_node(node, GFP_KERNEL, 0); + page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); if (!page) goto out_cleanup; - clear_highpage(page); per_cpu(cpu_profile_hits, cpu)[1] = (struct profile_hit *)page_address(page); - page = alloc_pages_node(node, GFP_KERNEL, 0); + page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); if (!page) goto out_cleanup; - clear_highpage(page); per_cpu(cpu_profile_hits, cpu)[0] = (struct profile_hit *)page_address(page); } |