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mm,memory_hotplug: remove status_change_nid_normal and update documentation

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Now that the last user of status_change_nid_normal is gone, we can remove
it.  Update documentation accordingly.

Link: https://lkml.kernel.org/r/20250616135158.450136-3-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Harry Yoo <harry.yoo@oracle.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Joanthan Cameron <Jonathan.Cameron@huawei.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Oscar Salvador
2025-06-16 15:51:45 +02:00
committed by Andrew Morton
parent 1bf47d4195
commit 8d2882a8ed
4 changed files with 0 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Documentation/core-api/memory-hotplug.rst
-3
View File
@@ -56,14 +56,11 @@ The third argument (arg) passes a pointer of struct memory_notify::
struct memory_notify {
unsigned long start_pfn;
unsigned long nr_pages;
int status_change_nid_normal;
int status_change_nid;
}
- start_pfn is start_pfn of online/offline memory.
- nr_pages is # of pages of online/offline memory.
- status_change_nid_normal is set node id when N_NORMAL_MEMORY of nodemask
is (will be) set/clear, if this is -1, then nodemask status is not changed.
- status_change_nid is set node id when N_MEMORY of nodemask is (will be)
set/clear. It means a new(memoryless) node gets new memory by online and a
node loses all memory. If this is -1, then nodemask status is not changed.
Documentation/translations/zh_CN/core-api/memory-hotplug.rst
-3
View File
@@ -62,7 +62,6 @@ memory_notify结构体的指针::
struct memory_notify {
unsigned long start_pfn;
unsigned long nr_pages;
int status_change_nid_normal;
int status_change_nid;
}
@@ -70,8 +69,6 @@ memory_notify结构体的指针::
- nr_pages是在线/离线内存的页数。
- status_change_nid_normal是当nodemask的N_NORMAL_MEMORY被设置/清除时设置节
点id，如果是-1，则nodemask状态不改变。
- status_change_nid是当nodemask的N_MEMORY被（将）设置/清除时设置的节点id。这
意味着一个新的（没上线的）节点通过联机获得新的内存，而一个节点失去了所有的内
include/linux/memory.h
-1
View File
@@ -109,7 +109,6 @@ struct memory_notify {
unsigned long altmap_nr_pages;
unsigned long start_pfn;
unsigned long nr_pages;
int status_change_nid_normal;
int status_change_nid;
};
mm/memory_hotplug.c
-12
View File
@@ -706,19 +706,13 @@ static void node_states_check_changes_online(unsigned long nr_pages,
int nid = zone_to_nid(zone);
arg->status_change_nid = NUMA_NO_NODE;
arg->status_change_nid_normal = NUMA_NO_NODE;
if (!node_state(nid, N_MEMORY))
arg->status_change_nid = nid;
if (zone_idx(zone) <= ZONE_NORMAL && !node_state(nid, N_NORMAL_MEMORY))
arg->status_change_nid_normal = nid;
}
static void node_states_set_node(int node, struct memory_notify *arg)
{
if (arg->status_change_nid_normal >= 0)
node_set_state(node, N_NORMAL_MEMORY);
if (arg->status_change_nid >= 0)
node_set_state(node, N_MEMORY);
}
@@ -1894,7 +1888,6 @@ static void node_states_check_changes_offline(unsigned long nr_pages,
enum zone_type zt;
arg->status_change_nid = NUMA_NO_NODE;
arg->status_change_nid_normal = NUMA_NO_NODE;
/*
* Check whether node_states[N_NORMAL_MEMORY] will be changed.
@@ -1906,8 +1899,6 @@ static void node_states_check_changes_offline(unsigned long nr_pages,
*/
for (zt = 0; zt <= ZONE_NORMAL; zt++)
present_pages += pgdat->node_zones[zt].present_pages;
if (zone_idx(zone) <= ZONE_NORMAL && nr_pages >= present_pages)
arg->status_change_nid_normal = zone_to_nid(zone);
/*
* We have accounted the pages from [0..ZONE_NORMAL); ZONE_HIGHMEM
@@ -1926,9 +1917,6 @@ static void node_states_check_changes_offline(unsigned long nr_pages,
static void node_states_clear_node(int node, struct memory_notify *arg)
{
if (arg->status_change_nid_normal >= 0)
node_clear_state(node, N_NORMAL_MEMORY);
if (arg->status_change_nid >= 0)
node_clear_state(node, N_MEMORY);
}