Re: [PATCH] Make cpu hotplug driver lock part of ppc_md

2010-01-12 Thread Nathan Fontenot
Benjamin Herrenschmidt wrote: The intention of the cpu_hotplug_driver_locks to add additional serialization during cpu hotplug operations. For pseries this is used during DLPAR of cpu operations so that cpu hotplug actions cannot be initiated whiloe a DLPAR operation is in flight. For example,

Re: [PATCH] Make cpu hotplug driver lock part of ppc_md

2010-01-11 Thread Benjamin Herrenschmidt
The intention of the cpu_hotplug_driver_locks to add additional serialization during cpu hotplug operations. For pseries this is used during DLPAR of cpu operations so that cpu hotplug actions cannot be initiated whiloe a DLPAR operation is in flight. For example, during DLPAR add we take

Re: [PATCH] Make cpu hotplug driver lock part of ppc_md

2009-12-23 Thread Nathan Fontenot
Michael Ellerman wrote: On Tue, 2009-12-22 at 08:45 -0600, Nathan Fontenot wrote: The recently introduced cpu_hotplug_driver_lock used to serialize cpu hotplug operations, namely for the pseries platform, causes a build issue for other platforms. The base cpu hotplug code attempts to take this

Re: [PATCH] Make cpu hotplug driver lock part of ppc_md

2009-12-23 Thread Michael Ellerman
On Wed, 2009-12-23 at 08:48 -0600, Nathan Fontenot wrote: Michael Ellerman wrote: On Tue, 2009-12-22 at 08:45 -0600, Nathan Fontenot wrote: The recently introduced cpu_hotplug_driver_lock used to serialize cpu hotplug operations, namely for the pseries platform, causes a build issue for

[PATCH] Make cpu hotplug driver lock part of ppc_md

2009-12-22 Thread Nathan Fontenot
The recently introduced cpu_hotplug_driver_lock used to serialize cpu hotplug operations, namely for the pseries platform, causes a build issue for other platforms. The base cpu hotplug code attempts to take this lock, but it may not be needed for all platforms. This patch moves the lock/unlock

Re: [PATCH] Make cpu hotplug driver lock part of ppc_md

2009-12-22 Thread Michael Ellerman
On Tue, 2009-12-22 at 08:45 -0600, Nathan Fontenot wrote: The recently introduced cpu_hotplug_driver_lock used to serialize cpu hotplug operations, namely for the pseries platform, causes a build issue for other platforms. The base cpu hotplug code attempts to take this lock, but it may not