Re: [PATCH 3/3] mm: print information when THP is disabled automatically

From: Cong Wang
Date: Mon Jun 20 2011 - 13:27:46 EST

ä 2011å06æ21æ 01:01, Mel Gorman åé:
On Tue, Jun 21, 2011 at 12:34:30AM +0800, Amerigo Wang wrote:
Print information when THP is disabled automatically so that
users can find this info in dmesg.

Signed-off-by: WANG Cong<amwang@xxxxxxxxxx>
mm/huge_memory.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 7fb44cc..07679da 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -544,8 +544,11 @@ static int __init hugepage_init(void)
* where the extra memory used could hurt more than TLB overhead
* is likely to save. The admin can still enable it through /sys.
+ << (20 - PAGE_SHIFT))) {
+ printk(KERN_INFO "hugepage: disabled auotmatically\n");
transparent_hugepage_flags = 0;
+ }


Guess this doesn't hurt. You misspelled automatically though and
mentioning "hugepage" could be confused with hugetlbfs.

Yeah, sorry for the typo.

But, there are many printk messages in the same file start with "hugepage:".
:-) I can send a patch to replace all of them with "THP" if you want...

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