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authorNathan Fontenot <nfont@austin.ibm.com>2011-01-31 10:55:23 -0600
committerGreg Kroah-Hartman <gregkh@suse.de>2011-02-03 16:08:58 -0800
commit6add7cd618b4d4dc525731beb539c5e06e891855 (patch)
tree624d7f27f6d869468d3355b31f27f2b2a00ad83e /drivers
parent1dc41aa6d6172d61c10638d11933a3595a41d51a (diff)
downloadop-kernel-dev-6add7cd618b4d4dc525731beb539c5e06e891855.zip
op-kernel-dev-6add7cd618b4d4dc525731beb539c5e06e891855.tar.gz
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/base/memory.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 71b4a32..3da6a43 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -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;
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