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b=CcmwbUszFWpBfQa1iQ2t21vlxzKgrEOnkDWYeuu/C2mXRSzEFyAUbBViytuXt+N83 mcvTXeJnZ0S4vTwLZ94shlAVPFgKS8Tgbsv1c7/O40ixcxwZ+H3yVPh3jBlitnMSOi kavYPgIxBPBFBZg35FJCGj8W0ze0edZx2+tRS2wi03cPhu2fQw/CK4uz6YxFkYTDfV xH3hcJ+EnjQd2jbsvJhoAUTue8m/YSb4Ve7yAhrulsaJJaLbOAvSgHWWgTrUsmJ4HS NmR/BcidKZnpmR7XKZ6JkP8nnTnELMjKdwzwtaSXhj84MSNtK7ZENSM0HFfavTv/mC huZj73M295NDQ== 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 3/7] mm/damon/sysfs-schemes: support quota goal complement flag Date: Fri, 18 Sep 2026 07:28:22 -0700 Message-ID: <20260918142827.85303-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260918142827.85303-1-sj@kernel.org> References: <20260918142827.85303-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam04 X-Rspam-User: X-Stat-Signature: bpfyixrwqrryyce79d7c9ugfmeiyxfr1 X-Rspamd-Queue-Id: E344240004 X-HE-Tag: 1789741717-403512 X-HE-Meta: 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 gHj0eAx1 eNdXqR5cWAfHrTXmJmmuOYvQNGr5DCdhLeCNPDEaEieHibq4VDvfxbDMqjcEz6AGXKXR7n95umm1LEwmbxAgDVCVJ21Zcn1BGb0l6EFzgfAW1YmZ56Pk+R8KE38OSQe3hZgywxCOzWO7tq3A8b7WhqUcmv6dM/EyjfppL4DXY5Whek/IkcFl+tZ8hxR9SnneZqP4+B1T5Odyy1NnXsb3ePuk6whhOk85D4jnchfFDQ/2Z+6c= 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 06af417bc9a2f..8f083611741fd 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