Re: [PATCH] staging: ozwpan: High resolution timers

From: Dan Carpenter
Date: Tue Jul 30 2013 - 09:12:53 EST

On Tue, Jul 30, 2013 at 01:31:50PM +0100, Rupesh Gujare wrote:
> Current implementation assumes HZ = 1000 for calculating
> all internal timer intervals, which creates problem on
> platforms where HZ != 1000.
> As well we need resolution of less than 10 mSec for heartbeat
> calculation, this creates problem on some platforms where HZ is
> configured as HZ = 100, or around, which restricts us to timer interval
> of 10 mSec. This is particularly found on embedded devices.
> This patch moves on to use high resolution timers to calculate
> all timer intervals as it allows us to have very small resolution
> of timer interval, removing dependency on HZ.

I am new to this driver. So we batch all the transfers together and
send/recieve them in oz_hcd_heartbeat() every 10msec? It's a
polling interface?

Sorry, if I am completely mis-reading what this driver is doing.

In other words, could you explain what oz_hcd_heartbeat() does.

dan carpenter

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