linux-kernel - [RFC PATCH v2 2/3] mm/damon: add module parameters for NUMA system

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Date: Mon, 20 May 2024 14:30:37 +0000
From: Jonghyeon Kim <tome01@...u.ac.kr>
To: SeongJae Park <sj@...nel.org>,
	damon@...ts.linux.dev,
	linux-mm@...ck.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Jonghyeon Kim <tome01@...u.ac.kr>
Subject: [RFC PATCH v2 2/3] mm/damon: add module parameters for NUMA system

This patch implements support NUMA-aware DAMON modules by adding kernel
module parameters. With this patch, DAMON_RECLAIM and DAMON_LRU_SORT can
use this feature.

Signed-off-by: Jonghyeon Kim <tome01@...u.ac.kr>
---
 mm/damon/lru_sort.c       | 1 +
 mm/damon/modules-common.h | 4 +++-
 mm/damon/reclaim.c        | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c
index 3de2916a6..3e25a52de 100644
--- a/mm/damon/lru_sort.c
+++ b/mm/damon/lru_sort.c
@@ -81,6 +81,7 @@ static struct damos_watermarks damon_lru_sort_wmarks = {
 	.high = 200,		/* 20 percent */
 	.mid = 150,		/* 15 percent */
 	.low = 50,		/* 5 percent */
+	.target_nid = NUMA_NO_NODE,
 };
 DEFINE_DAMON_MODULES_WMARKS_PARAMS(damon_lru_sort_wmarks);
 
diff --git a/mm/damon/modules-common.h b/mm/damon/modules-common.h
index f49cdb417..b167bb24a 100644
--- a/mm/damon/modules-common.h
+++ b/mm/damon/modules-common.h
@@ -27,11 +27,13 @@
 	module_param_named(quota_sz, quota.sz, ulong, 0600);
 
 #define DEFINE_DAMON_MODULES_WMARKS_PARAMS(wmarks)			\
+	module_param_named(metric, wmarks.metric, uint, 0600);	\
 	module_param_named(wmarks_interval, wmarks.interval, ulong,	\
 			0600);						\
 	module_param_named(wmarks_high, wmarks.high, ulong, 0600);	\
 	module_param_named(wmarks_mid, wmarks.mid, ulong, 0600);	\
-	module_param_named(wmarks_low, wmarks.low, ulong, 0600);
+	module_param_named(wmarks_low, wmarks.low, ulong, 0600);	\
+	module_param_named(target_nid, wmarks.target_nid, int, 0600);
 
 #define DEFINE_DAMON_MODULES_DAMOS_STATS_PARAMS(stat, try_name,		\
 		succ_name, qt_exceed_name)				\
diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c
index 66e190f03..31b8830a8 100644
--- a/mm/damon/reclaim.c
+++ b/mm/damon/reclaim.c
@@ -68,6 +68,7 @@ static struct damos_watermarks damon_reclaim_wmarks = {
 	.high = 500,		/* 50 percent */
 	.mid = 400,		/* 40 percent */
 	.low = 200,		/* 20 percent */
+	.target_nid = NUMA_NO_NODE,
 };
 DEFINE_DAMON_MODULES_WMARKS_PARAMS(damon_reclaim_wmarks);
 
-- 
2.34.1