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authorLee Schermerhorn <lee.schermerhorn@hp.com>2009-12-14 17:58:36 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 08:53:13 -0800
commit39da08cb074cf19cb249832a2a955dfb28837e65 (patch)
treefded7c1757adb29aa682f86251addc66549b6907 /include/linux/node.h
parent4faf8d950ec438c49ae4526b897c30f8a2cad741 (diff)
hugetlb: offload per node attribute registrations
Offload the registration and unregistration of per node hstate sysfs attributes to a worker thread rather than attempt the allocation/attachment or detachment/freeing of the attributes in the context of the memory hotplug handler. I don't know that this is absolutely required, but the registration can sleep in allocations and other mem hot plug handlers do it this way. If it turns out this is NOT required, we can drop this patch. N.B., Only tested build, boot, libhugetlbfs regression. i.e., no memory hotplug testing. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Reviewed-by: Andi Kleen <andi@firstfloor.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Nishanth Aravamudan <nacc@us.ibm.com> Cc: David Rientjes <rientjes@google.com> Cc: Adam Litke <agl@us.ibm.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Eric Whitney <eric.whitney@hp.com> Cc: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/node.h')
-rw-r--r--include/linux/node.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/node.h b/include/linux/node.h
index dae1521e1f05..06292dac3eab 100644
--- a/include/linux/node.h
+++ b/include/linux/node.h
@@ -21,9 +21,14 @@
#include <linux/sysdev.h>
#include <linux/cpumask.h>
+#include <linux/workqueue.h>
struct node {
struct sys_device sysdev;
+
+#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
+ struct work_struct node_work;
+#endif
};
struct memory_block;