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| author | Yi-wei Zhao <gbjc64@motorola.com> | 2012-12-20 18:06:21 -0600 |
|---|---|---|
| committer | Ziyan <jaraidaniel@gmail.com> | 2016-01-08 10:44:50 +0100 |
| commit | 95c015c61de96acca5bb4f3fd77f0cdab3322060 (patch) | |
| tree | f0e14c2f4ec30e0c7fbbca29473779871026e09a /include | |
| parent | e9e13169869ecfd1b2566a923cf08a3d35b21614 (diff) | |
| download | kernel_samsung_tuna-95c015c61de96acca5bb4f3fd77f0cdab3322060.zip kernel_samsung_tuna-95c015c61de96acca5bb4f3fd77f0cdab3322060.tar.gz kernel_samsung_tuna-95c015c61de96acca5bb4f3fd77f0cdab3322060.tar.bz2 | |
mm: page_alloc: retry direct compaction
When system load is heavy, memory commpaction may encounter
transient failure; add retry mechanism. And add the following
statistic variable "compact_retry_success" in /proc/vmstat
to see how many compaction success due to the retry.
And __zone_watermark_ok() will easily return false when system
is busy, which will make compaction failure as well. Amend some
to save margin cases.
This patch is ported from the patch:
* (CR) mem compaction enhancement
Reviewed-on: http://gerrit.pcs.mot.com/494962
Change-Id: I5ad08364678c7e68993f66e0c0d43d97712a99b6
Signed-off-by: Yi-wei Zhao <gbjc64@motorola.com>
Reviewed-on: http://gerrit.pcs.mot.com/507230
Tested-by: Jira Key <JIRAKEY@motorola.com>
Reviewed-by: Jason Hrycay <jason.hrycay@motorola.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/vm_event_item.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 03b90cdc..a70cc00 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -38,7 +38,7 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, PAGEOUTRUN, ALLOCSTALL, PGROTATED, #ifdef CONFIG_COMPACTION COMPACTBLOCKS, COMPACTPAGES, COMPACTPAGEFAILED, - COMPACTSTALL, COMPACTFAIL, COMPACTSUCCESS, + COMPACTSTALL, COMPACTFAIL, COMPACTSUCCESS, COMPACTSUCCESS_RETRY, #endif #ifdef CONFIG_HUGETLB_PAGE HTLB_BUDDY_PGALLOC, HTLB_BUDDY_PGALLOC_FAIL, |