linux-kernel - Re: [PATCH v2 5/6] msm: hotplug: support cpu hotplug on msm

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Message-ID: <20101208151451.GG9777@n2100.arm.linux.org.uk>
Date:	Wed, 8 Dec 2010 15:14:51 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Jeff Ohlstein <johlstei@...eaurora.org>
Cc:	Daniel Walker <dwalker@...eaurora.org>,
	linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	David Brown <davidb@...eaurora.org>,
	Bryan Huntsman <bryanh@...eaurora.org>
Subject: Re: [PATCH v2 5/6] msm: hotplug: support cpu hotplug on msm

On Tue, Dec 07, 2010 at 08:28:20PM -0800, Jeff Ohlstein wrote:
> +static DECLARE_COMPLETION(cpu_killed);

There's changes in my tree for 2.6.38 which gets rid of this completion
from platform code.

> +void platform_cpu_die(unsigned int cpu)
> +{
> +#ifdef DEBUG
> +	unsigned int this_cpu = hard_smp_processor_id();
> +
> +	if (cpu != this_cpu) {
> +		printk(KERN_CRIT "Eek! platform_cpu_die running on %u, should be %u\n",
> +			   this_cpu, cpu);
> +		BUG();
> +	}
> +#endif

This debug check can not possibly ever happen; it can be removed.

> +
> +	printk(KERN_NOTICE "CPU%u: shutdown\n", cpu);

This printk is not required with those changes I mentioned above.

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