linux-kernel - Re: [PATCH 1/4] h8300: clocksource: Use overflow interrupt

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Message-ID: <5644C367.9010309@linaro.org>
Date:	Thu, 12 Nov 2015 17:50:47 +0100
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org, John Stultz <john.stultz@...aro.org>
Subject: Re: [PATCH 1/4] h8300: clocksource: Use overflow interrupt

On 11/11/2015 03:50 PM, Yoshinori Sato wrote:
> Overflow interrupt is used for moving up of a count.
>
> Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> ---

[ ... ]

> @@ -118,6 +119,7 @@ static struct timer16_priv timer16_priv = {
>   		.enable = timer16_enable,
>   		.disable = timer16_disable,
>   		.mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8),
> +		.max_cycles = 0xffffffff,

This is computed automatically when registering the clocksource.

clocksource_register_hz
   __clocksource_register_scale
     __clocksource_update_freq_scale
	clocksource_update_max_deferment
=>            clocks_calc_max_nsecs


>   		.flags = CLOCK_SOURCE_IS_CONTINUOUS,
>   	},
>   };

[ ... ]

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