linux-kernel - Re: [PATCH 3/4] cpu: export cpu hotplug disable/enable functions as global functions

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Date:	Tue, 7 Aug 2012 12:51:13 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	srivatsa.bhat@...ux.vnet.ibm.com, rjw@...k.pl
Cc:	Zhao Chenhui <chenhui.zhao@...escale.com>,
	"linuxppc-dev@...ts.ozlabs.org list" <linuxppc-dev@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org list" <linux-kernel@...r.kernel.org>,
	Li Yang <leoli@...escale.com>
Subject: Re: [PATCH 3/4] cpu: export cpu hotplug disable/enable functions as global functions


On Aug 7, 2012, at 3:43 AM, Zhao Chenhui wrote:

> The cpufreq driver of mpc85xx will disable/enable cpu hotplug temporarily.
> Therefore, the related functions should be exported.
> 
> Signed-off-by: Zhao Chenhui <chenhui.zhao@...escale.com>
> ---
> include/linux/cpu.h |    4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)

Rafael, Srivatsa,

Wanted to get your ack on export these functions for direct calling by arch code.

- k

> 
> diff --git a/include/linux/cpu.h b/include/linux/cpu.h
> index ce7a074..df8f73d 100644
> --- a/include/linux/cpu.h
> +++ b/include/linux/cpu.h
> @@ -146,6 +146,8 @@ void notify_cpu_starting(unsigned int cpu);
> extern void cpu_maps_update_begin(void);
> extern void cpu_maps_update_done(void);
> 
> +extern void cpu_hotplug_disable_before_freeze(void);
> +extern void cpu_hotplug_enable_after_thaw(void);
> #else	/* CONFIG_SMP */
> 
> #define cpu_notifier(fn, pri)	do { (void)(fn); } while (0)
> @@ -167,6 +169,8 @@ static inline void cpu_maps_update_done(void)
> {
> }
> 
> +static inline void cpu_hotplug_disable_before_freeze(void)	{}
> +static inline void cpu_hotplug_enable_after_thaw(void)	{}
> #endif /* CONFIG_SMP */
> extern struct bus_type cpu_subsys;
> 
> -- 
> 1.6.4.1
> 

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