]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
Subject: [PATCH] hugetlb: vmstat events for huge page allocations
authorAdam Litke <agl@us.ibm.com>
Mon, 28 Apr 2008 09:13:06 +0000 (02:13 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 28 Apr 2008 15:58:23 +0000 (08:58 -0700)
commit3b1163006332302117b1b2acf226d4014ff46525
treec9e43179620cfe612ce57795cb0b1e1ceb2c9d1b
parent122c7a59055c77434118d7dd4dff4b625d4a2c15
Subject: [PATCH] hugetlb: vmstat events for huge page allocations

Allocating huge pages directly from the buddy allocator is not guaranteed to
succeed.  Success depends on several factors (such as the amount of physical
memory available and the level of fragmentation).  With the addition of
dynamic hugetlb pool resizing, allocations can occur much more frequently.
For these reasons it is desirable to keep track of huge page allocation
successes and failures.

Add two new vmstat entries to track huge page allocations that succeed and
fail.  The presence of the two entries is contingent upon CONFIG_HUGETLB_PAGE
being enabled.

[akpm@linux-foundation.org: reduced ifdeffery]
Signed-off-by: Adam Litke <agl@us.ibm.com>
Signed-off-by: Eric Munson <ebmunson@us.ibm.com>
Tested-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Andy Whitcroft <apw@shadowen.org>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/vmstat.h
mm/hugetlb.c
mm/vmstat.c