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