linux-kernel - [PATCH 11/22] mm/damon/reclaim: use monitoring attributes parameters generator macro

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Date:   Tue, 13 Sep 2022 17:44:38 +0000
From:   SeongJae Park <sj@...nel.org>
To:     SeongJae Park <sj@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     damon@...ts.linux.dev, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 11/22] mm/damon/reclaim: use monitoring attributes parameters generator macro

This commit makes DAMON_RECLAIM to generate the module parameters for
DAMON monitoring attributes using the generator macro to simplify the
code and reduce duplicates.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/reclaim.c | 47 +++++-----------------------------------------
 1 file changed, 5 insertions(+), 42 deletions(-)

diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c
index d35a00d8dde2..48326bef20f5 100644
--- a/mm/damon/reclaim.c
+++ b/mm/damon/reclaim.c
@@ -13,6 +13,8 @@
 #include <linux/sched.h>
 #include <linux/workqueue.h>
 
+#include "modules-common.h"
+
 #ifdef MODULE_PARAM_PREFIX
 #undef MODULE_PARAM_PREFIX
 #endif
@@ -130,52 +132,13 @@ static unsigned long wmarks_low __read_mostly = 200;
 module_param(wmarks_low, ulong, 0600);
 
 static struct damon_attrs damon_reclaim_mon_attrs = {
-	.sample_interval = 5000,
-	.aggr_interval = 100000,
+	.sample_interval = 5000,	/* 5 ms */
+	.aggr_interval = 100000,	/* 100 ms */
 	.ops_update_interval = 0,
 	.min_nr_regions = 10,
 	.max_nr_regions = 1000,
 };
-
-/*
- * Sampling interval for the monitoring in microseconds.
- *
- * The sampling interval of DAMON for the cold memory monitoring.  Please refer
- * to the DAMON documentation for more detail.  5 ms by default.
- */
-module_param_named(sample_interval, damon_reclaim_mon_attrs.sample_interval,
-		ulong, 0600);
-
-/*
- * Aggregation interval for the monitoring in microseconds.
- *
- * The aggregation interval of DAMON for the cold memory monitoring.  Please
- * refer to the DAMON documentation for more detail.  100 ms by default.
- */
-module_param_named(aggr_interval, damon_reclaim_mon_attrs.aggr_interval, ulong,
-		0600);
-
-/*
- * Minimum number of monitoring regions.
- *
- * The minimal number of monitoring regions of DAMON for the cold memory
- * monitoring.  This can be used to set lower-bound of the monitoring quality.
- * But, setting this too high could result in increased monitoring overhead.
- * Please refer to the DAMON documentation for more detail.  10 by default.
- */
-module_param_named(min_nr_regions, damon_reclaim_mon_attrs.min_nr_regions,
-		ulong, 0600);
-
-/*
- * Maximum number of monitoring regions.
- *
- * The maximum number of monitoring regions of DAMON for the cold memory
- * monitoring.  This can be used to set upper-bound of the monitoring overhead.
- * However, setting this too low could result in bad monitoring quality.
- * Please refer to the DAMON documentation for more detail.  1000 by default.
- */
-module_param_named(max_nr_regions, damon_reclaim_mon_attrs.max_nr_regions,
-		ulong, 0600);
+DEFINE_DAMON_MODULES_MON_ATTRS_PARAMS(damon_reclaim_mon_attrs);
 
 /*
  * Start of the target memory region in physical address.
-- 
2.25.1