linux-kernel - Re: [-mm patch] cpu

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Message-ID: <20070302072428.B25965@unix-os.sc.intel.com>
Date:	Fri, 2 Mar 2007 07:24:28 -0800
From:	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>
To:	Frederik Deweerdt <deweerdt@...e.fr>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, venkatesh.pallipadi@...el.com,
	abelay@...ell.com, shaohua.li@...el.com, len.brown@...el.com
Subject: Re: [-mm patch] cpu_idle: fix build break

On Fri, Mar 02, 2007 at 02:40:07PM +0000, Frederik Deweerdt wrote:
> On Fri, Mar 02, 2007 at 03:00:26AM -0800, Andrew Morton wrote:
> > +git-acpi-fix-cpuidle-borkage.patch
> This attached patch might be needed too, the build breaks if
> !CONFIG_HOTPLUG_CPU and CONFIG_CPU_IDLE
>  
>   CC      drivers/cpuidle/cpuidle.o
> drivers/cpuidle/cpuidle.c: In function 'cpuidle_init':
> drivers/cpuidle/cpuidle.c:272: erreur: 'cpuidle_cpu_notifier' undeclared (first use in this function)
> drivers/cpuidle/cpuidle.c:272: erreur: (Each undeclared identifier is reported only once
> drivers/cpuidle/cpuidle.c:272: erreur: for each function it appears in.)
> make[2]: *** [drivers/cpuidle/cpuidle.o] Erreur 1
> make[1]: *** [drivers/cpuidle] Erreur 2
> make: *** [drivers] Erreur 2
>

Thanks for catching this breakage. Patch below should be the proper fix.

Thanks,
Venki

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>
 
Index: linux-2.6.21-rc-mm/drivers/cpuidle/cpuidle.c
===================================================================
--- linux-2.6.21-rc-mm.orig/drivers/cpuidle/cpuidle.c
+++ linux-2.6.21-rc-mm/drivers/cpuidle/cpuidle.c
@@ -189,10 +189,6 @@ static struct sysdev_driver cpuidle_sysd
 	.remove		= cpuidle_remove_device,
 };
 
-#ifdef CONFIG_SMP
-
-#ifdef CONFIG_HOTPLUG_CPU
-
 static int cpuidle_cpu_callback(struct notifier_block *nfb,
 					unsigned long action, void *hcpu)
 {
@@ -224,7 +220,7 @@ static struct notifier_block __cpuinitda
     .notifier_call = cpuidle_cpu_callback,
 };
 
-#endif /* CONFIG_HOTPLUG_CPU */
+#ifdef CONFIG_SMP
 
 static void smp_callback(void *v)
 {
-
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