powerpc/pseries/cpuidle: Replace pseries_notify_cpuidle_add call with notifier
authorDeepthi Dharwar <deepthi@linux.vnet.ibm.com>
Sun, 20 May 2012 18:34:27 +0000 (18:34 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Tue, 3 Jul 2012 04:14:40 +0000 (14:14 +1000)
commit16aaaff68440dd95de98adb075303355814be6e0
treef7ea14e9be10224e398aa8398ddd00db10ff112b
parent25ebc45b93452d0bc60271f178237123c4b26808
powerpc/pseries/cpuidle: Replace pseries_notify_cpuidle_add call with notifier

The following patch is to remove the pseries_notify_add_cpu() call
and replace it by a hot plug notifier.

This would prevent cpuidle resources being released and allocated each
time cpu comes online on pseries.

The earlier design was causing a lockdep problem
in start_secondary as reported on this thread
-https://lkml.org/lkml/2012/5/17/2

This applies on 3.4-rc7

Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/include/asm/processor.h
arch/powerpc/platforms/pseries/processor_idle.c
arch/powerpc/platforms/pseries/smp.c