Commit 304b9584 authored by SeongJae Park's avatar SeongJae Park Committed by Andrew Morton
Browse files

mm/damon/core: replace per-quota regions priority histogram buffer usage with per-context one 

Replace the usage of per-quota region priorities histogram buffer with the
per-context one.  After this change, the per-quota histogram is not used
by anyone, and hence it is ready to be removed.

Link: https://lkml.kernel.org/r/20240826042323.87025-3-sj@kernel.org


Signed-off-by: default avatarSeongJae Park <sj@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent b7315fbb

mm/damon/core.c

+6 −3
Original line number Diff line number Diff line
@@ -1582,13 +1582,16 @@ static void damos_adjust_quota(struct damon_ctx *c, struct damos *s) 
		return;



	/* Fill up the score histogram */

	memset(quota->histogram, 0, sizeof(quota->histogram));

	memset(c->regions_score_histogram, 0,

			sizeof(*c->regions_score_histogram) *

			(DAMOS_MAX_SCORE + 1));

	damon_for_each_target(t, c) {

		damon_for_each_region(r, t) {

			if (!__damos_valid_target(r, s))

				continue;

			score = c->ops.get_scheme_score(c, t, r, s);

			quota->histogram[score] += damon_sz_region(r);

			c->regions_score_histogram[score] +=

				damon_sz_region(r);

			if (score > max_score)

				max_score = score;

		}
@@ -1596,7 +1599,7 @@ static void damos_adjust_quota(struct damon_ctx *c, struct damos *s) 


	/* Set the min score limit */

	for (cumulated_sz = 0, score = max_score; ; score--) {

		cumulated_sz += quota->histogram[score];

		cumulated_sz += c->regions_score_histogram[score];

		if (cumulated_sz >= quota->esz || !score)

			break;

	}