linux-kernel - Re: [PATCH 1/3] kernel: add calibration_delay

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Date:	Tue, 20 May 2014 21:41:31 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Peter De Schrijver <pdeschrijver@...dia.com>
CC:	Russell King <linux@....linux.org.uk>,
	Stephen Warren <swarren@...dotorg.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	linux-kernel@...r.kernel.org,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Thierry Reding <thierry.reding@...il.com>,
	linux-tegra@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/3] kernel: add calibration_delay_done()

On 05/20/2014 07:36 PM, Peter De Schrijver wrote:

> Add calibration_delay_done() call and dummy implementation. This allows
> architectures to stop accepting registrations for new timer based delay
> functions.

> Signed-off-by: Peter De Schrijver <pdeschrijver@...dia.com>
> ---
>   init/calibrate.c |   12 ++++++++++++
>   1 files changed, 12 insertions(+), 0 deletions(-)

> diff --git a/init/calibrate.c b/init/calibrate.c
> index 520702d..31cae76 100644
> --- a/init/calibrate.c
> +++ b/init/calibrate.c
> @@ -262,6 +262,16 @@ unsigned long __attribute__((weak)) calibrate_delay_is_known(void)
>   	return 0;
>   }
>
> +/*
> + * Indicate the cpu delay calibration is done. This can be used by
> + * architectures to stop accepting delay timer registrations after this point.
> + */
> +
> +void __attribute__((weak)) calibration_delay_done(void)
> +{
> +	return;

    Not really needed.

> +}
> +
>   void calibrate_delay(void)
>   {
>   	unsigned long lpj;

WBR, Sergei

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