linux-kernel - Re: [PATCH] x86: fix idle notifier not being called in CONFIG_X86

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Message-ID: <20130306101818.GA6587@gmail.com>
Date:	Wed, 6 Mar 2013 11:18:18 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Illyas Mansoor <illyas.mansoor@...el.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Linux PM <linux-pm@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>, X86 <x86@...nel.org>,
	Len Brown <lenb@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	Tejun Heo <tj@...nel.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	"Rudramuni, Vishwesh M" <vishwesh.m.rudramuni@...el.com>,
	richard@....at, josh@...htriplett.org,
	"Kumar P, Mahesh" <mahesh.kumar.p@...el.com>,
	"Sil, Dyut K" <dyut.k.sil@...el.com>
Subject: Re: [PATCH] x86: fix idle notifier not being called in CONFIG_X86_32


* Illyas Mansoor <illyas.mansoor@...el.com> wrote:

> Idle notifier not registered if CONFIG_X86_32 is defined,
> those callbacks are empty for X86_32 platform.
> 
> ifdef CONFIG_X86_64
>  void enter_idle(void);
>  void exit_idle(void);
> else
> static inline void enter_idle(void) { }
> static inline void exit_idle(void) { }
> static inline void __exit_idle(void) { }
> endif
> 
> Make this work on X86_32 platforms by
> removing the restriction for X86_64

What will they be used for?

Thanks,

	Ingo
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