Re: [PATCH resend4 2/3] itimers: fix periodic tics precision

From: Stanislaw Gruszka
Date: Mon May 25 2009 - 08:58:36 EST


On Mon, 25 May 2009 14:32:14 +0200 (CEST)
Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> 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.

What about cputime_one_jiffy ?

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

Stupid me, in asm-generic/cputime.h should be
#define cputime_one jiffies_to_cputime(1)

Thanks
Stanislaw
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