summaryrefslogtreecommitdiff
path: root/drivers/acpi
diff options
context:
space:
mode:
authorWen Congyang <wency@cn.fujitsu.com>2013-02-23 00:33:27 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-24 01:50:13 (GMT)
commit90b30cdc1d87450e2ae89c8f8a29102dc2c1992e (patch)
treeb613d6e644d7f0605f5a471c133f356da6ff5ea4 /drivers/acpi
parentc4c605246452d0e578945ea95a8e72877e97e8c6 (diff)
downloadlinux-90b30cdc1d87450e2ae89c8f8a29102dc2c1992e.tar.xz
memory-hotplug: export the function try_offline_node()
try_offline_node() will be needed in the tristate drivers/acpi/processor_driver.c. The node will be offlined when all memory/cpu on the node have been hotremoved. So we need the function try_offline_node() in cpu-hotplug path. If the memory-hotplug is disabled, and cpu-hotplug is enabled 1. no memory no the node we don't online the node, and cpu's node is the nearest node. 2. the node contains some memory the node has been onlined, and cpu's node is still needed to migrate the sleep task on the cpu to the same node. So we do nothing in try_offline_node() in this case. [rientjes@google.com: export the function try_offline_node() fix] Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: David Rientjes <rientjes@google.com> Cc: Jiang Liu <liuj97@gmail.com> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Len Brown <lenb@kernel.org> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi')
0 files changed, 0 insertions, 0 deletions