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Date: Mon, 25 May 2009 14:32:14 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: Stanislaw Gruszka <sgruszka@redhat.com>
Subject: Re: [PATCH resend4 2/3] itimers: fix periodic tics precision
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Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Oleg Nesterov <oleg@redhat.com>, linuxppc-dev@ozlabs.org,
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On Mon, 25 May 2009, Stanislaw Gruszka wrote:
> @@ -904,6 +905,7 @@ void __init time_init(void)
>  	tb_ticks_per_usec = ppc_tb_freq / 1000000;
>  	tb_to_us = mulhwu_scale_factor(ppc_tb_freq, 1000000);
>  	calc_cputime_factors();
> +	cputime_one = jiffies_to_cputime(1);

  1) The variable name is misleading.

  2) The patch breaks all powerpc platforms which have
  CONFIG_VIRT_CPU_ACCOUNTING=n and ia64 with
  CONFIG_VIRT_CPU_ACCOUNTING=y

Thanks,

	tglx