linux-kernel - [RFC PATCH 04/18] mm/damon/core: split out scheme stat update logic into a new function

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Message-Id: <20221019001317.104270-5-sj@kernel.org>
Date:   Wed, 19 Oct 2022 00:13:03 +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: [RFC PATCH 04/18] mm/damon/core: split out scheme stat update logic into a new function

The function for applying a given DAMON scheme action to a given DAMON
region, 'damos_apply_scheme()' is not quite short.  Make it better to
read by splitting out the stat update logic into a new function.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/core.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/mm/damon/core.c b/mm/damon/core.c
index e777a751295f..7fa88dda711d 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -748,6 +748,16 @@ static bool damos_skip_charged_region(struct damon_target *t,
 	return false;
 }
 
+static void damos_update_stat(struct damos *s,
+		unsigned long sz_tried, unsigned long sz_applied)
+{
+	s->stat.nr_tried++;
+	s->stat.sz_tried += sz_tried;
+	if (sz_applied)
+		s->stat.nr_applied++;
+	s->stat.sz_applied += sz_applied;
+}
+
 static void damos_apply_scheme(struct damon_ctx *c, struct damon_target *t,
 		struct damon_region *r, struct damos *s)
 {
@@ -779,11 +789,7 @@ static void damos_apply_scheme(struct damon_ctx *c, struct damon_target *t,
 		r->age = 0;
 
 update_stat:
-	s->stat.nr_tried++;
-	s->stat.sz_tried += sz;
-	if (sz_applied)
-		s->stat.nr_applied++;
-	s->stat.sz_applied += sz_applied;
+	damos_update_stat(s, sz, sz_applied);
 }
 
 static void damon_do_apply_schemes(struct damon_ctx *c,
@@ -808,7 +814,6 @@ static void damon_do_apply_schemes(struct damon_ctx *c,
 		if (!damos_valid_target(c, t, r, s))
 			continue;
 
-		/* Apply the scheme */
 		damos_apply_scheme(c, t, r, s);
 	}
 }
-- 
2.25.1