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[PATCH] Profiling: require buffer allocation on the correct node

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Profiling really suffers with off node buffers.  Fail if no memory is
available on the nodes.  The profiling code can deal with these failures
should they occur.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Lameter 2006-09-25 23:31:45 -07:00 committed by Linus Torvalds
parent 1192d52641
commit fbd98167e6
1 changed files with 12 additions and 4 deletions
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16
kernel/profile.c
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@ -309,13 +309,17 @@ 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 | __GFP_ZERO, 0);
page = alloc_pages_node(node,
GFP_KERNEL | __GFP_ZERO | GFP_THISNODE,
0);
if (!page)
return NOTIFY_BAD;
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 | __GFP_ZERO, 0);
page = alloc_pages_node(node,
GFP_KERNEL | __GFP_ZERO | GFP_THISNODE,
0);
if (!page)
goto out_free;
per_cpu(cpu_profile_hits, cpu)[0] = page_address(page);
@ -491,12 +495,16 @@ static int __init create_hash_tables(void)
int node = cpu_to_node(cpu);
struct page *page;
page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
page = alloc_pages_node(node,
GFP_KERNEL | __GFP_ZERO | GFP_THISNODE,
0);
if (!page)
goto out_cleanup;
per_cpu(cpu_profile_hits, cpu)[1]
= (struct profile_hit *)page_address(page);
page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
page = alloc_pages_node(node,
GFP_KERNEL | __GFP_ZERO | GFP_THISNODE,
0);
if (!page)
goto out_cleanup;
per_cpu(cpu_profile_hits, cpu)[0]