[PATCH v2 5/7] hugetlb: add charge_surplus_hugepages attribute

[TSUKADA Koutaro]

Add an entry for charge_surplus_hugepages to sysfs.

Signed-off-by: TSUKADA Koutaro 
---
 hugetlb.c |   25 +
 1 file changed, 25 insertions(+)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 9a9549c..2f9bdbc 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2662,6 +2662,30 @@ static ssize_t surplus_hugepages_show(struct kobject 
*kobj,
 }
 HSTATE_ATTR_RO(surplus_hugepages);

+static ssize_t charge_surplus_hugepages_show(struct kobject *kobj,
+   struct kobj_attribute *attr, char *buf)
+{
+   struct hstate *h = kobj_to_hstate(kobj, NULL);
+   return sprintf(buf, "%d\n", h->charge_surplus_huge_pages);
+}
+
+static ssize_t charge_surplus_hugepages_store(struct kobject *kobj,
+   struct kobj_attribute *attr, const char *buf, size_t len)
+{
+   int err;
+   unsigned long input;
+   struct hstate *h = kobj_to_hstate(kobj, NULL);
+
+   err = kstrtoul(buf, 10, );
+   if (err)
+   return err;
+
+   h->charge_surplus_huge_pages = input ? true : false;
+
+   return len;
+}
+HSTATE_ATTR(charge_surplus_hugepages);
+
 static struct attribute *hstate_attrs[] = {
_hugepages_attr.attr,
_overcommit_hugepages_attr.attr,
@@ -2671,6 +2695,7 @@ static ssize_t surplus_hugepages_show(struct kobject 
*kobj,
 #ifdef CONFIG_NUMA
_hugepages_mempolicy_attr.attr,
 #endif
+   _surplus_hugepages_attr.attr,
NULL,
 };

-- 
Tsukada

[PATCH v2 5/7] hugetlb: add charge_surplus_hugepages attribute

[TSUKADA Koutaro]

Add an entry for charge_surplus_hugepages to sysfs.

Signed-off-by: TSUKADA Koutaro 
---
 hugetlb.c |   25 +
 1 file changed, 25 insertions(+)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 9a9549c..2f9bdbc 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2662,6 +2662,30 @@ static ssize_t surplus_hugepages_show(struct kobject 
*kobj,
 }
 HSTATE_ATTR_RO(surplus_hugepages);

+static ssize_t charge_surplus_hugepages_show(struct kobject *kobj,
+   struct kobj_attribute *attr, char *buf)
+{
+   struct hstate *h = kobj_to_hstate(kobj, NULL);
+   return sprintf(buf, "%d\n", h->charge_surplus_huge_pages);
+}
+
+static ssize_t charge_surplus_hugepages_store(struct kobject *kobj,
+   struct kobj_attribute *attr, const char *buf, size_t len)
+{
+   int err;
+   unsigned long input;
+   struct hstate *h = kobj_to_hstate(kobj, NULL);
+
+   err = kstrtoul(buf, 10, );
+   if (err)
+   return err;
+
+   h->charge_surplus_huge_pages = input ? true : false;
+
+   return len;
+}
+HSTATE_ATTR(charge_surplus_hugepages);
+
 static struct attribute *hstate_attrs[] = {
_hugepages_attr.attr,
_overcommit_hugepages_attr.attr,
@@ -2671,6 +2695,7 @@ static ssize_t surplus_hugepages_show(struct kobject 
*kobj,
 #ifdef CONFIG_NUMA
_hugepages_mempolicy_attr.attr,
 #endif
+   _surplus_hugepages_attr.attr,
NULL,
 };

-- 
Tsukada