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From: Thomas Gleixner <tglx@linutronix.de>
To: John Stultz <johnstul@us.ibm.com>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/3] Add clocksource_register_hz/khz interface
Date: Sat, 1 May 2010 10:45:22 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LFD.2.00.1005011042290.25342@localhost.localdomain> (raw)
In-Reply-To: <1272677785-23881-1-git-send-email-johnstul@us.ibm.com>

On Fri, 30 Apr 2010, John Stultz wrote:
> +/**
> + * clocksource_register - Used to install new clocksources
> + * @t:		clocksource to be registered

  Can you fix the kernel doc please ?

> + *
> + * Returns -EBUSY if registration fails, zero otherwise.
> + */
> +int clocksource_register_hz(struct clocksource *cs, u32 hz)
> +{
> +	
> +	/* Ideally we want to use  some of the limits used in 
> +	 * clocksource_max_deferment, to provide a more informed
> +	 * MAX_UPDATE_LENGTH. But for now this just gets the
> +	 * regiseter interface working properly.
> +	 */
> +	clocks_calc_mult_shift(&cs->mult, &cs->shift, hz,
> +				      NSEC_PER_SEC, MAX_UPDATE_LENGTH);
> +	cs->max_idle_ns = clocksource_max_deferment(cs);
> +
> +	mutex_lock(&clocksource_mutex);
> +	clocksource_enqueue(cs);
> +	clocksource_select();
> +	clocksource_enqueue_watchdog(cs);
> +	mutex_unlock(&clocksource_mutex);
> +	return 0;
> +}
> +EXPORT_SYMBOL(clocksource_register_hz);

  EXPORT_SYMBOL_GPL please

> +
> +/**
> + * clocksource_register - Used to install new clocksources
> + * @t:		clocksource to be registered
> + *
> + * Returns -EBUSY if registration fails, zero otherwise.
> + */
> +int clocksource_register_khz(struct clocksource *cs, u32 khz)
> +{

  shouldn't that be a simple inline wrapper which does

  return clocksource_register_hz(cs, khz * 1000);

Thanks,

	tglx

      parent reply	other threads:[~2010-05-01  8:45 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-01  1:36 John Stultz
2010-05-01  1:36 ` [PATCH 2/3] Convert common x86 clocksources to use clocksource_register_hz/khz John Stultz
2010-05-01  1:36   ` [RFC][PATCH 3/3] Try to convert non-trivial clocksources to clocksource_register_hz John Stultz
2010-05-10 15:53     ` Martin Schwidefsky
2010-05-10 19:19       ` john stultz
2010-05-11  6:20         ` Martin Schwidefsky
2010-05-10 21:33     ` Jim Cromie
2010-05-11  0:04       ` john stultz
2010-05-11  1:51         ` Jim Cromie
2010-05-11  0:37       ` john stultz
2010-05-12 16:43         ` Julien Ridoux
2010-05-01  8:45 ` Thomas Gleixner [this message]

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