[PATCH 16/22] mm/damon/reclaim: use stat parameters generator

From: SeongJae Park
Date: Tue Sep 13 2022 - 14:28:29 EST


This commit makes DAMON_RECLAIM to generate the module parameters for
DAMOS statistics using the generator macro to simplify the code and
reduce duplicates.

Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
mm/damon/reclaim.c | 41 +++++------------------------------------
1 file changed, 5 insertions(+), 36 deletions(-)

diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c
index 7f845f617dc5..1ef8353ac15a 100644
--- a/mm/damon/reclaim.c
+++ b/mm/damon/reclaim.c
@@ -136,35 +136,9 @@ module_param(monitor_region_end, ulong, 0600);
static int kdamond_pid __read_mostly = -1;
module_param(kdamond_pid, int, 0400);

-/*
- * Number of memory regions that tried to be reclaimed.
- */
-static unsigned long nr_reclaim_tried_regions __read_mostly;
-module_param(nr_reclaim_tried_regions, ulong, 0400);
-
-/*
- * Total bytes of memory regions that tried to be reclaimed.
- */
-static unsigned long bytes_reclaim_tried_regions __read_mostly;
-module_param(bytes_reclaim_tried_regions, ulong, 0400);
-
-/*
- * Number of memory regions that successfully be reclaimed.
- */
-static unsigned long nr_reclaimed_regions __read_mostly;
-module_param(nr_reclaimed_regions, ulong, 0400);
-
-/*
- * Total bytes of memory regions that successfully be reclaimed.
- */
-static unsigned long bytes_reclaimed_regions __read_mostly;
-module_param(bytes_reclaimed_regions, ulong, 0400);
-
-/*
- * Number of times that the time/space quota limits have exceeded
- */
-static unsigned long nr_quota_exceeds __read_mostly;
-module_param(nr_quota_exceeds, ulong, 0400);
+static struct damos_stat damon_reclaim_stat;
+DEFINE_DAMON_MODULES_DAMOS_STATS_PARAMS(damon_reclaim_stat,
+ reclaim_tried_regions, reclaimed_regions, quota_exceeds);

static struct damon_ctx *ctx;
static struct damon_target *target;
@@ -318,13 +292,8 @@ static int damon_reclaim_after_aggregation(struct damon_ctx *c)
struct damos *s;

/* update the stats parameter */
- damon_for_each_scheme(s, c) {
- nr_reclaim_tried_regions = s->stat.nr_tried;
- bytes_reclaim_tried_regions = s->stat.sz_tried;
- nr_reclaimed_regions = s->stat.nr_applied;
- bytes_reclaimed_regions = s->stat.sz_applied;
- nr_quota_exceeds = s->stat.qt_exceeds;
- }
+ damon_for_each_scheme(s, c)
+ damon_reclaim_stat = s->stat;

return damon_reclaim_handle_commit_inputs();
}
--
2.25.1