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b=AtC4+M7zHV2yA+gAd+4igAmWzhN4V4krSxJl4WnFeNhxrkN/UAxpqVHngri3Vrabf ms7scbQpDtdazOuOShWLh2ZBgjrQYPPkBUKTIPf/3ld75olMrPHSHZ2TPmkbfXvewK US0dGIxRTWamajgrBMhHm/XxP7lqWx5CCvFZcRWP+DICwYZu6DcSa/+hYfxFQPAJkx XHh94smJ7FCOcGQcvtqRHQF5nB8bsXg5kY4f1+Dp5J1os9W7H6ZaGOZkmA6UNVhg3q szJeNq4vhBPfP47mMoii4/5lz18BPWeLVzqmiknEwgnJZHHdQRtk8ez2xF4ocaXt6r INMPwLKO92Pgw== From: SJ Park To: Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v5 3/8] mm/damon/sysfs-schemes: support quota goal complement flag Date: Mon, 28 Sep 2026 02:33:35 -0700 Message-ID: <20260928093342.16584-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260928093342.16584-1-sj@kernel.org> References: <20260928093342.16584-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 82DED1C0005 X-Stat-Signature: oyxetaapzrsyabt134emrqkzjoqpgssb X-HE-Tag: 1790588037-246674 X-HE-Meta: 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 DygCtAjn dhageWXiz+seVL34tL31WWlN4Wm0R86WpfK6M56N52v5//76Lqq5JVHv1E07utW104WEsWahKj6FoltrsKAyWNwOBZGrm4BuG8PMas5UFZdyEe8LYN+KAovRZBGPTzRqLZtvITb9JyVbNgmmlJ+lT3HQPx+7xAbEDYwmdq9EYRXjXqA9/7/bApoeJH2KcqFtAsUg6an0TOxWlUsYzAv0e1PR1SYLldf1CHbXb2XF+ZWKrv48= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Add a new sysfs file, complement, under the quota goal directory. It works for setting and getting the quota goal metric complement flag value. Signed-off-by: SJ Park --- mm/damon/sysfs-schemes.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 06af417bc9a2..8f083611741f 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -1220,6 +1220,7 @@ static const struct kobj_type damon_sysfs_watermarks_ktype = { struct damos_sysfs_quota_goal { struct kobject kobj; enum damos_quota_goal_metric metric; + bool complement; unsigned long target_value; unsigned long current_value; int nid; @@ -1316,6 +1317,30 @@ static ssize_t target_metric_store(struct kobject *kobj, return -EINVAL; } +static ssize_t complement_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damos_sysfs_quota_goal *goal = container_of(kobj, + struct damos_sysfs_quota_goal, kobj); + + return sysfs_emit(buf, "%c\n", goal->complement ? 'Y' : 'N'); +} + +static ssize_t complement_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t count) +{ + struct damos_sysfs_quota_goal *goal = container_of(kobj, + struct damos_sysfs_quota_goal, kobj); + bool complement; + int err = kstrtobool(buf, &complement); + + if (err) + return err; + + goal->complement = complement; + return count; +} + static ssize_t target_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { @@ -1424,6 +1449,9 @@ static void damos_sysfs_quota_goal_release(struct kobject *kobj) static struct kobj_attribute damos_sysfs_quota_goal_target_metric_attr = __ATTR_RW_MODE(target_metric, 0600); +static struct kobj_attribute damos_sysfs_quota_goal_complement_attr = + __ATTR_RW_MODE(complement, 0600); + static struct kobj_attribute damos_sysfs_quota_goal_target_value_attr = __ATTR_RW_MODE(target_value, 0600); @@ -1438,6 +1466,7 @@ static struct kobj_attribute damos_sysfs_quota_goal_path_attr = static struct attribute *damos_sysfs_quota_goal_attrs[] = { &damos_sysfs_quota_goal_target_metric_attr.attr, + &damos_sysfs_quota_goal_complement_attr.attr, &damos_sysfs_quota_goal_target_value_attr.attr, &damos_sysfs_quota_goal_current_value_attr.attr, &damos_sysfs_quota_goal_nid_attr.attr, @@ -2869,7 +2898,8 @@ static int damos_sysfs_add_quota_score( if (!sysfs_goal->target_value) continue; - goal = damos_new_quota_goal(sysfs_goal->metric, false, + goal = damos_new_quota_goal(sysfs_goal->metric, + sysfs_goal->complement, sysfs_goal->target_value); if (!goal) return -ENOMEM; -- 2.47.3