[PATCH 32/36] autonuma: boost khugepaged scanning rate

[Andrea Arcangeli]

Until THP native migration is implemented it's safer to boost
khugepaged scanning rate because all memory migration are splitting
the hugepages. So the regular rate of scanning becomes too low when
lots of memory is migrated.

Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
---
 mm/huge_memory.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 579e52b..00320b6 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -573,6 +573,12 @@ static int __init hugepage_init(void)
 
 	set_recommended_min_free_kbytes();
 
+	/* Hack, remove after THP native migration */
+	if (autonuma_possible()) {
+		khugepaged_scan_sleep_millisecs = 100;
+		khugepaged_alloc_sleep_millisecs = 10000;
+	}
+
 	return 0;
 out:
 	hugepage_exit_sysfs(hugepage_kobj);
--
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