The patch titled
Subject: mm-demotion-expose-memory-tier-details-via-sysfs-v4
has been added to the -mm mm-unstable branch. Its filename is
mm-demotion-expose-memory-tier-details-via-sysfs-v4.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-demotion-expose-memory-tier-details-via-sysfs-v4.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Subject: mm-demotion-expose-memory-tier-details-via-sysfs-v4
Date: Thu, 22 Sep 2022 15:52:01 +0530
drop toptier_nodes from sysfs
Link: https://lkml.kernel.org/r/20220922102201.62168-1-aneesh.kumar@xxxxxxxxxxxxx
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Alistair Popple <apopple@xxxxxxxxxx>
Cc: Bharata B Rao <bharata@xxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Cc: Hesham Almatary <hesham.almatary@xxxxxxxxxx>
Cc: "Huang, Ying" <ying.huang@xxxxxxxxx>
Cc: Jagdish Gediya <jvgediya.oss@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Tim Chen <tim.c.chen@xxxxxxxxx>
Cc: Wei Xu <weixugc@xxxxxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers~mm-demotion-expose-memory-tier-details-via-sysfs-v4
+++ a/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers
@@ -23,13 +23,3 @@ Description: Directory with details of a
nodes: NUMA nodes that are part of this memory tier.
-
-What: /sys/devices/virtual/memory_tiering/toptier_nodes
-Date: August 2022
-Contact: Linux memory management mailing list <linux-mm@xxxxxxxxx>
-Description: Toptier node mask
-
- A toptier is defined as the memory tier from which memory promotion
- is not done by the kernel.
-
- toptier_nodes: Union of NUMA nodes that are part of each toptier.
--- a/mm/memory-tiers.c~mm-demotion-expose-memory-tier-details-via-sysfs-v4
+++ a/mm/memory-tiers.c
@@ -625,57 +625,12 @@ static int __meminit memtier_hotplug_cal
return notifier_from_errno(0);
}
-#ifdef CONFIG_MIGRATION
-static ssize_t toptier_nodes_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int ret;
- nodemask_t nmask, top_tier_mask = NODE_MASK_NONE;
- struct memory_tier *memtier = to_memory_tier(dev);
-
- mutex_lock(&memory_tier_lock);
- list_for_each_entry(memtier, &memory_tiers, list) {
- if (memtier->adistance_start > top_tier_adistance)
- break;
- nmask = get_memtier_nodemask(memtier);
- nodes_or(top_tier_mask, top_tier_mask, nmask);
- }
-
- ret = sysfs_emit(buf, "%*pbl\n", nodemask_pr_args(&top_tier_mask));
- mutex_unlock(&memory_tier_lock);
- return ret;
-}
-#else
-static ssize_t toptier_nodes_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- nodemask_t top_tier_mask = node_states[N_MEMORY];
-
- return sysfs_emit(buf, "%*pbl\n", nodemask_pr_args(&top_tier_mask));
-}
-#endif
-static DEVICE_ATTR_RO(toptier_nodes);
-
-static struct attribute *memtier_subsys_attrs[] = {
- &dev_attr_toptier_nodes.attr,
- NULL
-};
-
-static const struct attribute_group memtier_subsys_group = {
- .attrs = memtier_subsys_attrs,
-};
-
-static const struct attribute_group *memtier_subsys_groups[] = {
- &memtier_subsys_group,
- NULL
-};
-
static int __init memory_tier_init(void)
{
int ret, node;
struct memory_tier *memtier;
- ret = subsys_virtual_register(&memory_tier_subsys, memtier_subsys_groups);
+ ret = subsys_virtual_register(&memory_tier_subsys, NULL);
if (ret)
panic("%s() failed to register memory tier subsystem\n", __func__);
_
Patches currently in -mm which might be from aneesh.kumar@xxxxxxxxxxxxx are
mm-demotion-add-support-for-explicit-memory-tiers.patch
mm-demotion-move-memory-demotion-related-code.patch
mm-demotion-add-hotplug-callbacks-to-handle-new-numa-node-onlined.patch
mm-demotion-add-hotplug-callbacks-to-handle-new-numa-node-onlined-fix.patch
mm-demotion-dax-kmem-set-nodes-abstract-distance-to-memtier_default_dax_adistance.patch
mm-demotion-dax-kmem-set-nodes-abstract-distance-to-memtier_default_dax_adistance-fix.patch
mm-demotion-build-demotion-targets-based-on-explicit-memory-tiers.patch
mm-demotion-add-pg_data_t-member-to-track-node-memory-tier-details.patch
mm-demotion-drop-memtier-from-memtype.patch
mm-demotion-update-node_is_toptier-to-work-with-memory-tiers.patch
mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix-3.patch
lib-nodemask-optimize-node_random-for-nodemask-with-single-numa-node.patch
mm-demotion-expose-memory-tier-details-via-sysfs.patch
mm-demotion-expose-memory-tier-details-via-sysfs-v4.patch
