From: Toshi Kani <toshi.kani@hp•com>
To: Greg KH <gregkh@linuxfoundation•org>
Cc: fenghua.yu@intel•com, bp@suse•de, x86@kernel•org,
linux-kernel@vger•kernel.org, rjw@sisk•pl,
isimatu.yasuaki@jp•fujitsu.com, mingo@redhat•com,
srivatsa.bhat@linux•vnet.ibm.com, tglx@linutronix•de,
hpa@linux•intel.com, linuxppc-dev@lists•ozlabs.org
Subject: Re: [PATCH 2/4] hotplug, x86: Add hotplug lock to missing places
Date: Mon, 19 Aug 2013 08:53:44 -0600 [thread overview]
Message-ID: <1376924024.10300.450.camel@misato.fc.hp.com> (raw)
In-Reply-To: <20130817231552.GA20169@kroah.com>
On Sat, 2013-08-17 at 16:15 -0700, Greg KH wrote:
> On Sat, Aug 17, 2013 at 01:46:57PM -0600, Toshi Kani wrote:
> > lock_device_hotplug() serializes CPU & Memory online/offline and hotplug
> > operations. However, this lock is not held in the debug interfaces below
> > that initiate CPU online/offline operations.
> >
> > - _debug_hotplug_cpu(), cpu0 hotplug test interface enabled by
> > CONFIG_DEBUG_HOTPLUG_CPU0.
> > - cpu_probe_store() and cpu_release_store(), cpu hotplug test interface
> > enabled by CONFIG_ARCH_CPU_PROBE_RELEASE.
> >
> > This patch changes the above interfaces to hold lock_device_hotplug().
> >
> > Signed-off-by: Toshi Kani <toshi.kani@hp•com>
> > ---
> > arch/x86/kernel/topology.c | 2 ++
> > drivers/base/cpu.c | 16 ++++++++++++++--
> > 2 files changed, 16 insertions(+), 2 deletions(-)
>
> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation•org>
Thanks Greg!
-Toshi
next prev parent reply other threads:[~2013-08-19 14:55 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-17 19:46 [PATCH 0/4] Unify CPU hotplug lock interface Toshi Kani
2013-08-17 19:46 ` [PATCH 1/4] hotplug, x86: Fix online state in cpu0 debug interface Toshi Kani
2013-08-18 0:59 ` Rafael J. Wysocki
2013-08-17 19:46 ` [PATCH 2/4] hotplug, x86: Add hotplug lock to missing places Toshi Kani
2013-08-17 23:15 ` Greg KH
2013-08-19 14:53 ` Toshi Kani [this message]
2013-08-18 0:59 ` Rafael J. Wysocki
2013-08-17 19:46 ` [PATCH 3/4] hotplug, x86: Disable ARCH_CPU_PROBE_RELEASE on x86 Toshi Kani
2013-08-18 1:00 ` Rafael J. Wysocki
2013-08-17 19:46 ` [PATCH 4/4] hotplug, powerpc, x86: Remove cpu_hotplug_driver_lock() Toshi Kani
2013-08-18 1:01 ` Rafael J. Wysocki
2013-08-19 15:20 ` Nathan Fontenot
2013-08-19 15:23 ` Toshi Kani
2013-08-18 1:02 ` [PATCH 0/4] Unify CPU hotplug lock interface Rafael J. Wysocki
2013-08-19 14:54 ` Toshi Kani
2013-08-29 17:15 ` Toshi Kani
2013-08-30 0:06 ` Rafael J. Wysocki
2013-08-30 0:12 ` Toshi Kani
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