From: TSUKADA Koutaro <tsukada@ascade.co.jp>
To: Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@kernel.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Jonathan Corbet <corbet@lwn.net>,
"Luis R. Rodriguez" <mcgrof@kernel.org>,
Kees Cook <keescook@chromium.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Roman Gushchin <guro@fb.com>,
David Rientjes <rientjes@google.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Anshuman Khandual <khandual@linux.vnet.ibm.com>,
Marc-Andre Lureau <marcandre.lureau@redhat.com>,
Punit Agrawal <punit.agrawal@arm.com>,
Dan Williams <dan.j.williams@intel.com>,
Vlastimil Babka <vbabka@suse.cz>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
cgroups@vger.kernel.org, tsukada@ascade.co.jp
Subject: [PATCH v2 5/7] hugetlb: add charge_surplus_hugepages attribute
Date: Fri, 18 May 2018 13:37:37 +0900 [thread overview]
Message-ID: <2e8b5907-36e1-094b-ec87-149e1f0b7f69@ascade.co.jp> (raw)
In-Reply-To: <e863529b-7ce5-4fbe-8cff-581b5789a5f9@ascade.co.jp>
Add an entry for charge_surplus_hugepages to sysfs.
Signed-off-by: TSUKADA Koutaro <tsukada@ascade.co.jp>
---
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, &input);
+ if (err)
+ return err;
+
+ h->charge_surplus_huge_pages = input ? true : false;
+
+ return len;
+}
+HSTATE_ATTR(charge_surplus_hugepages);
+
static struct attribute *hstate_attrs[] = {
&nr_hugepages_attr.attr,
&nr_overcommit_hugepages_attr.attr,
@@ -2671,6 +2695,7 @@ static ssize_t surplus_hugepages_show(struct kobject *kobj,
#ifdef CONFIG_NUMA
&nr_hugepages_mempolicy_attr.attr,
#endif
+ &charge_surplus_hugepages_attr.attr,
NULL,
};
--
Tsukada
next prev parent reply other threads:[~2018-05-18 4:37 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-18 4:27 [PATCH v2 0/7] mm: pages for hugetlb's overcommit may be able to charge to memcg TSUKADA Koutaro
2018-05-18 4:29 ` [PATCH v2 1/7] hugetlb: introduce charge_surplus_huge_pages to struct hstate TSUKADA Koutaro
2018-05-18 4:32 ` [PATCH v2 2/7] hugetlb: support migrate charging for surplus hugepages TSUKADA Koutaro
2018-05-18 4:34 ` [PATCH v2 3/7] memcg: use compound_order rather than hpage_nr_pages TSUKADA Koutaro
2018-05-18 17:46 ` Punit Agrawal
2018-05-18 17:51 ` Punit Agrawal
2018-05-21 3:48 ` TSUKADA Koutaro
2018-05-21 14:53 ` Punit Agrawal
2018-05-18 4:36 ` [PATCH v2 4/7] mm, sysctl: make charging surplus hugepages controllable TSUKADA Koutaro
2018-05-18 4:37 ` TSUKADA Koutaro [this message]
2018-05-18 4:39 ` [PATCH v2 6/7] Documentation, hugetlb: describe about charge_surplus_hugepages, TSUKADA Koutaro
2018-05-18 4:41 ` [PATCH v2 7/7] memcg: supports movement of surplus hugepages statistics TSUKADA Koutaro
2018-05-21 14:52 ` [PATCH v2 0/7] mm: pages for hugetlb's overcommit may be able to charge to memcg Punit Agrawal
2018-05-22 12:56 ` TSUKADA Koutaro
2018-05-21 18:07 ` Mike Kravetz
2018-05-22 13:04 ` TSUKADA Koutaro
2018-05-22 18:54 ` Michal Hocko
2018-05-24 4:39 ` TSUKADA Koutaro
2018-05-24 8:20 ` Michal Hocko
2018-05-24 12:58 ` TSUKADA Koutaro
2018-05-24 13:24 ` Michal Hocko
2018-05-25 1:51 ` TSUKADA Koutaro
2018-05-22 20:28 ` Mike Kravetz
2018-05-22 13:51 ` Michal Hocko
2018-05-24 4:26 ` TSUKADA Koutaro
2018-05-24 8:27 ` Michal Hocko
2018-05-24 17:45 ` Mike Kravetz
2018-05-25 1:55 ` TSUKADA Koutaro
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