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authorLai Jiangshan <laijs@cn.fujitsu.com>2012-12-13 01:51:49 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 05:38:33 +0400
commit6715ddf94576ff39f5d1cda8d4c568d3b79e82ec (patch)
tree208f32528f28a4ee1d2cff6836830c900ff7f31f /Documentation/memory-hotplug.txt
parent4b0ef1fe8a626f0ba7f649764f979d0dc9eab86b (diff)
downloadlinux-6715ddf94576ff39f5d1cda8d4c568d3b79e82ec.tar.xz
hotplug: update nodemasks management
Update nodemasks management for N_MEMORY. [lliubbo@gmail.com: fix build] Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Cc: Christoph Lameter <cl@linux.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: Lin Feng <linfeng@cn.fujitsu.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Bob Liu <lliubbo@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/memory-hotplug.txt')
-rw-r--r--Documentation/memory-hotplug.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/memory-hotplug.txt b/Documentation/memory-hotplug.txt
index c6f993d491b5..8e5eacbdcfa3 100644
--- a/Documentation/memory-hotplug.txt
+++ b/Documentation/memory-hotplug.txt
@@ -390,6 +390,7 @@ struct memory_notify {
unsigned long start_pfn;
unsigned long nr_pages;
int status_change_nid_normal;
+ int status_change_nid_high;
int status_change_nid;
}
@@ -397,7 +398,9 @@ 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_HIGH_MEMORY of nodemask is (will be)
+status_change_nid_high is set node id when N_HIGH_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.
If status_changed_nid* >= 0, callback should create/discard structures for the