linux-kernel - Re: [PATCH 0/4] Unify CPU hotplug lock interface

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Message-ID: <1449558.tneKXFMIWE@vostro.rjw.lan>
Date:	Sun, 18 Aug 2013 03:02:25 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Toshi Kani <toshi.kani@...com>
Cc:	mingo@...hat.com, hpa@...ux.intel.com, tglx@...utronix.de,
	gregkh@...uxfoundation.org, benh@...nel.crashing.org,
	x86@...nel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, fenghua.yu@...el.com, bp@...e.de,
	srivatsa.bhat@...ux.vnet.ibm.com, isimatu.yasuaki@...fujitsu.com
Subject: Re: [PATCH 0/4] Unify CPU hotplug lock interface

On Saturday, August 17, 2013 01:46:55 PM Toshi Kani wrote:
> lock_device_hotplug() was recently introduced to serialize CPU & Memory
> online/offline and hotplug operations, along with sysfs online interface
> restructure (commit 4f3549d7).  With this new locking scheme,
> cpu_hotplug_driver_lock() is redundant and is no longer necessary.
> 
> This patchset makes sure that lock_device_hotplug() covers all CPU online/
> offline interfaces, and then removes cpu_hotplug_driver_lock().
> 
> The patchset is based on Linus's tree, 3.11.0-rc5.

Nice series, thanks a lot for taking care of this!

Rafael


> ---
> Toshi Kani (4):
>   hotplug, x86: Fix online state in cpu0 debug interface
>   hotplug, x86: Add hotplug lock to missing places
>   hotplug, x86: Disable ARCH_CPU_PROBE_RELEASE on x86
>   hotplug, powerpc, x86: Remove cpu_hotplug_driver_lock()
> 
> ---
>  arch/powerpc/kernel/smp.c              | 12 ----------
>  arch/powerpc/platforms/pseries/dlpar.c | 40 +++++++++++++---------------------
>  arch/x86/Kconfig                       |  4 ----
>  arch/x86/kernel/smpboot.c              | 21 ------------------
>  arch/x86/kernel/topology.c             | 11 ++++++----
>  drivers/base/cpu.c                     | 26 ++++++++++++----------
>  include/linux/cpu.h                    | 13 -----------
>  7 files changed, 37 insertions(+), 90 deletions(-)
> --
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-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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