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padata: Convert to hotplug state machine

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Install the callbacks via the state machine. CPU-hotplug multinstance support
is used with the nocalls() version. Maybe parts of padata_alloc() could be
moved into the online callback so that we could invoke ->startup callback for
instance and drop get_online_cpus().

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-crypto@vger.kernel.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-14-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Sebastian Andrzej Siewior 2016-09-06 19:04:49 +02:00 • committed by Thomas Gleixner
parent 27622b061e
commit 30e92153b4
2 changed files with 53 additions and 41 deletions
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2
include/linux/padata.h
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@ -151,7 +151,7 @@ struct parallel_data {
* @flags: padata flags.
*/
struct padata_instance {
struct notifier_block cpu_notifier;
struct hlist_node node;
struct workqueue_struct *wq;
struct parallel_data *pd;
struct padata_cpumask cpumask;