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memory hotplug: sysfs probe routine should add all memory sections 

As a follow-on to the recent patches I submitted that allowed for a sysfs
memory block to span multiple memory sections, we should also update the
probe routine to online all of the memory sections in a memory block.  Without
this patch the current code will only add a single memory section.  I think
the probe routine should add all of the memory sections in the specified memory
block so that its behavior is in line with memory hotplug actions through
the sysfs interfaces.

This patch applies on top of the previous sysfs memory updates to allow
a sysfs directory o span multiple memory sections.

https://lkml.org/lkml/2011/1/20/245

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Nathan Fontenot 2011-01-31 10:55:23 -06:00 committed by Greg Kroah-Hartman
parent 1dc41aa6d6
commit 6add7cd618
1 changed files with 10 additions and 3 deletions
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13
drivers/base/memory.c
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@ -387,12 +387,19 @@ memory_probe_store(struct class *class, struct class_attribute *attr,
{
u64 phys_addr;
int nid;
int ret;
int i, ret;
phys_addr = simple_strtoull(buf, NULL, 0);
nid = memory_add_physaddr_to_nid(phys_addr);
ret = add_memory(nid, phys_addr, PAGES_PER_SECTION << PAGE_SHIFT);
for (i = 0; i < sections_per_block; i++) {
nid = memory_add_physaddr_to_nid(phys_addr);
ret = add_memory(nid, phys_addr,
PAGES_PER_SECTION << PAGE_SHIFT);
if (ret)
break;
phys_addr += MIN_MEMORY_BLOCK_SIZE;
}
if (ret)
count = ret;