The patch titled
mm: show memory section to node relationship in sysfs
has been removed from the -mm tree. Its filename was
show-memory-section-to-node-relationship-in-sysfs.patch
This patch was dropped because an updated version will be merged
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm: show memory section to node relationship in sysfs
From: Gary Hade <garyhade@xxxxxxxxxx>
Show memory section to node relationship in sysfs
Add /sys/devices/system/memory/memoryX/node files to show
the node on which each memory section resides.
Signed-off-by: Gary Hade <garyhade@xxxxxxxxxx>
Cc: Yasunori Goto <y-goto@xxxxxxxxxxxxxx>
Cc: Badari Pulavarty <pbadari@xxxxxxxxxx>
Cc: Mel Gorman <mel@xxxxxxxxx>
Cc: Chris McDermott <lcm@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/memory-hotplug.txt | 1 -
drivers/base/memory.c | 20 ++++++++++++++++++++
2 files changed, 20 insertions(+), 1 deletion(-)
diff -puN Documentation/memory-hotplug.txt~show-memory-section-to-node-relationship-in-sysfs Documentation/memory-hotplug.txt
--- a/Documentation/memory-hotplug.txt~show-memory-section-to-node-relationship-in-sysfs
+++ a/Documentation/memory-hotplug.txt
@@ -365,7 +365,6 @@ node if necessary.
- allowing memory hot-add to ZONE_MOVABLE. maybe we need some switch like
sysctl or new control file.
- showing memory section and physical device relationship.
- - showing memory section and node relationship (maybe good for NUMA)
- showing memory section is under ZONE_MOVABLE or not
- test and make it better memory offlining.
- support HugeTLB page migration and offlining.
diff -puN drivers/base/memory.c~show-memory-section-to-node-relationship-in-sysfs drivers/base/memory.c
--- a/drivers/base/memory.c~show-memory-section-to-node-relationship-in-sysfs
+++ a/drivers/base/memory.c
@@ -150,6 +150,22 @@ static ssize_t show_mem_state(struct sys
return len;
}
+/*
+ * node on which memory section resides
+ */
+static ssize_t show_mem_node(struct sys_device *dev,
+ struct sysdev_attribute *attr, char *buf)
+{
+ unsigned long start_pfn;
+ int ret;
+ struct memory_block *mem =
+ container_of(dev, struct memory_block, sysdev);
+
+ start_pfn = section_nr_to_pfn(mem->phys_index);
+ ret = pfn_to_nid(start_pfn);
+ return sprintf(buf, "%d\n", ret);
+}
+
int memory_notify(unsigned long val, void *v)
{
return blocking_notifier_call_chain(&memory_chain, val, v);
@@ -278,6 +294,7 @@ static SYSDEV_ATTR(phys_index, 0444, sho
static SYSDEV_ATTR(state, 0644, show_mem_state, store_mem_state);
static SYSDEV_ATTR(phys_device, 0444, show_phys_device, NULL);
static SYSDEV_ATTR(removable, 0444, show_mem_removable, NULL);
+static SYSDEV_ATTR(node, 0444, show_mem_node, NULL);
#define mem_create_simple_file(mem, attr_name) \
sysdev_create_file(&mem->sysdev, &attr_##attr_name)
@@ -368,6 +385,8 @@ static int add_memory_block(unsigned lon
ret = mem_create_simple_file(mem, phys_device);
if (!ret)
ret = mem_create_simple_file(mem, removable);
+ if (!ret)
+ ret = mem_create_simple_file(mem, node);
return ret;
}
@@ -413,6 +432,7 @@ int remove_memory_block(unsigned long no
mem_remove_simple_file(mem, state);
mem_remove_simple_file(mem, phys_device);
mem_remove_simple_file(mem, removable);
+ mem_remove_simple_file(mem, node);
unregister_memory(mem, section);
return 0;
_
Patches currently in -mm which might be from garyhade@xxxxxxxxxx are
x86_64-add-memory-hotremove-config-option.patch
show-memory-section-to-node-relationship-in-sysfs.patch
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