* + mmmemory-tiers-use-node-notifier-instead-of-memory-notifier.patch added to mm-new branch
@ 2025-06-05 20:39 Andrew Morton
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Morton @ 2025-06-05 20:39 UTC (permalink / raw)
To: mm-commits, vbabka, rakie.kim, Jonathan.Cameron, harry.yoo, david,
42.hyeyoo, osalvador, akpm
The patch titled
Subject: mm,memory-tiers: use node-notifier instead of memory-notifier
has been added to the -mm mm-new branch. Its filename is
mmmemory-tiers-use-node-notifier-instead-of-memory-notifier.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mmmemory-tiers-use-node-notifier-instead-of-memory-notifier.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Oscar Salvador <osalvador@suse.de>
Subject: mm,memory-tiers: use node-notifier instead of memory-notifier
Date: Thu, 5 Jun 2025 16:22:56 +0200
memory-tier is only concerned when a numa node changes its memory state,
because it then needs to re-create the demotion list. So stop using the
memory notifier and use the new numa node notifer instead.
Link: https://lkml.kernel.org/r/20250605142305.244465-6-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/memory-tiers.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
--- a/mm/memory-tiers.c~mmmemory-tiers-use-node-notifier-instead-of-memory-notifier
+++ a/mm/memory-tiers.c
@@ -872,25 +872,25 @@ static int __meminit memtier_hotplug_cal
unsigned long action, void *_arg)
{
struct memory_tier *memtier;
- struct memory_notify *arg = _arg;
+ struct node_notify *narg = _arg;
/*
* Only update the node migration order when a node is
* changing status, like online->offline.
*/
- if (arg->status_change_nid < 0)
+ if (narg->nid < 0)
return notifier_from_errno(0);
switch (action) {
- case MEM_OFFLINE:
+ case NODE_REMOVED_LAST_MEMORY:
mutex_lock(&memory_tier_lock);
- if (clear_node_memory_tier(arg->status_change_nid))
+ if (clear_node_memory_tier(narg->nid))
establish_demotion_targets();
mutex_unlock(&memory_tier_lock);
break;
- case MEM_ONLINE:
+ case NODE_ADDED_FIRST_MEMORY:
mutex_lock(&memory_tier_lock);
- memtier = set_node_memory_tier(arg->status_change_nid);
+ memtier = set_node_memory_tier(narg->nid);
if (!IS_ERR(memtier))
establish_demotion_targets();
mutex_unlock(&memory_tier_lock);
@@ -929,7 +929,7 @@ static int __init memory_tier_init(void)
nodes_and(default_dram_nodes, node_states[N_MEMORY],
node_states[N_CPU]);
- hotplug_memory_notifier(memtier_hotplug_callback, MEMTIER_HOTPLUG_PRI);
+ hotplug_node_notifier(memtier_hotplug_callback, MEMTIER_HOTPLUG_PRI);
return 0;
}
subsys_initcall(memory_tier_init);
_
Patches currently in -mm which might be from osalvador@suse.de are
mmslub-do-not-special-case-n_normal-nodes-for-slab_nodes.patch
mmmemory_hotplug-remove-status_change_nid_normal-and-update-documentation.patch
mmmemory_hotplug-implement-numa-node-notifier.patch
mmslub-use-node-notifier-instead-of-memory-notifier.patch
mmmemory-tiers-use-node-notifier-instead-of-memory-notifier.patch
driverscxl-use-node-notifier-instead-of-memory-notifier.patch
drivershmat-use-node-notifier-instead-of-memory-notifier.patch
kernelcpuset-use-node-notifier-instead-of-memory-notifier.patch
mmmempolicy-use-node-notifier-instead-of-memory-notifier.patch
mmmemory_hotplug-rename-status_change_nid-parameter-in-memory_notify.patch
^ permalink raw reply [flat|nested] 2+ messages in thread
* + mmmemory-tiers-use-node-notifier-instead-of-memory-notifier.patch added to mm-new branch
@ 2025-06-09 23:38 Andrew Morton
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Morton @ 2025-06-09 23:38 UTC (permalink / raw)
To: mm-commits, vbabka, rakie.kim, joshua.hahnjy, Jonathan.Cameron,
harry.yoo, david, 42.hyeyoo, osalvador, akpm
The patch titled
Subject: mm,memory-tiers: use node-notifier instead of memory-notifier
has been added to the -mm mm-new branch. Its filename is
mmmemory-tiers-use-node-notifier-instead-of-memory-notifier.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mmmemory-tiers-use-node-notifier-instead-of-memory-notifier.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Oscar Salvador <osalvador@suse.de>
Subject: mm,memory-tiers: use node-notifier instead of memory-notifier
Date: Mon, 9 Jun 2025 11:21:42 +0200
memory-tier is only concerned when a numa node changes its memory state,
because it then needs to re-create the demotion list. So stop using the
memory notifier and use the new numa node notifer instead.
Link: https://lkml.kernel.org/r/20250609092149.312114-6-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/memory-tiers.c | 19 ++++++-------------
1 file changed, 6 insertions(+), 13 deletions(-)
--- a/mm/memory-tiers.c~mmmemory-tiers-use-node-notifier-instead-of-memory-notifier
+++ a/mm/memory-tiers.c
@@ -872,25 +872,18 @@ static int __meminit memtier_hotplug_cal
unsigned long action, void *_arg)
{
struct memory_tier *memtier;
- struct memory_notify *arg = _arg;
-
- /*
- * Only update the node migration order when a node is
- * changing status, like online->offline.
- */
- if (arg->status_change_nid < 0)
- return notifier_from_errno(0);
+ struct node_notify *nn = _arg;
switch (action) {
- case MEM_OFFLINE:
+ case NODE_REMOVED_LAST_MEMORY:
mutex_lock(&memory_tier_lock);
- if (clear_node_memory_tier(arg->status_change_nid))
+ if (clear_node_memory_tier(nn->nid))
establish_demotion_targets();
mutex_unlock(&memory_tier_lock);
break;
- case MEM_ONLINE:
+ case NODE_ADDED_FIRST_MEMORY:
mutex_lock(&memory_tier_lock);
- memtier = set_node_memory_tier(arg->status_change_nid);
+ memtier = set_node_memory_tier(nn->nid);
if (!IS_ERR(memtier))
establish_demotion_targets();
mutex_unlock(&memory_tier_lock);
@@ -929,7 +922,7 @@ static int __init memory_tier_init(void)
nodes_and(default_dram_nodes, node_states[N_MEMORY],
node_states[N_CPU]);
- hotplug_memory_notifier(memtier_hotplug_callback, MEMTIER_HOTPLUG_PRI);
+ hotplug_node_notifier(memtier_hotplug_callback, MEMTIER_HOTPLUG_PRI);
return 0;
}
subsys_initcall(memory_tier_init);
_
Patches currently in -mm which might be from osalvador@suse.de are
mmslub-do-not-special-case-n_normal-nodes-for-slab_nodes.patch
mmmemory_hotplug-remove-status_change_nid_normal-and-update-documentation.patch
mmmemory_hotplug-implement-numa-node-notifier.patch
mmslub-use-node-notifier-instead-of-memory-notifier.patch
mmmemory-tiers-use-node-notifier-instead-of-memory-notifier.patch
driverscxl-use-node-notifier-instead-of-memory-notifier.patch
drivershmat-use-node-notifier-instead-of-memory-notifier.patch
kernelcpuset-use-node-notifier-instead-of-memory-notifier.patch
mmmempolicy-use-node-notifier-instead-of-memory-notifier.patch
mmmemory_hotplug-drop-status_change_nid-parameter-from-memory_notify.patch
^ permalink raw reply [flat|nested] 2+ messages in thread
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2025-06-05 20:39 Andrew Morton
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