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* [merged mm-stable] mm-damon-sysfs-schemes-use-nr_accesses_bp-as-the-source-of-tried_regions-n-nr_accesses.patch removed from -mm tree
@ 2023-10-04 20:22 Andrew Morton
  0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2023-10-04 20:22 UTC (permalink / raw)
  To: mm-commits, shuah, rostedt, corbet, sj, akpm


The quilt patch titled
     Subject: mm/damon/sysfs-schemes: use nr_accesses_bp as the source of tried_regions/<N>/nr_accesses
has been removed from the -mm tree.  Its filename was
     mm-damon-sysfs-schemes-use-nr_accesses_bp-as-the-source-of-tried_regions-n-nr_accesses.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/sysfs-schemes: use nr_accesses_bp as the source of tried_regions/<N>/nr_accesses
Date: Sat, 16 Sep 2023 02:09:38 +0000

DAMON sysfs interface exposes access rate of each region via DAMOS tried
regions directory.  For this, the nr_accesses field of the region is used.
DAMOS was actually using nr_accesses in the past, but it uses
nr_accesses_bp now.  Use the value that it is really using as the source.

Note that this doesn't expose nr_accesses_bp as is (in basis point), but
after converting it to the natural number by dividing the value by 10,000.
Hence there is no behavioral change from users' perspective.

Link: https://lkml.kernel.org/r/20230916020945.47296-3-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/damon/sysfs-schemes.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/damon/sysfs-schemes.c~mm-damon-sysfs-schemes-use-nr_accesses_bp-as-the-source-of-tried_regions-n-nr_accesses
+++ a/mm/damon/sysfs-schemes.c
@@ -31,7 +31,7 @@ static struct damon_sysfs_scheme_region
 		return NULL;
 	sysfs_region->kobj = (struct kobject){};
 	sysfs_region->ar = region->ar;
-	sysfs_region->nr_accesses = region->nr_accesses;
+	sysfs_region->nr_accesses = region->nr_accesses_bp / 10000;
 	sysfs_region->age = region->age;
 	INIT_LIST_HEAD(&sysfs_region->list);
 	return sysfs_region;
_

Patches currently in -mm which might be from sj@kernel.org are



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2023-10-04 20:22 [merged mm-stable] mm-damon-sysfs-schemes-use-nr_accesses_bp-as-the-source-of-tried_regions-n-nr_accesses.patch removed from -mm tree Andrew Morton

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