Re: [PATCH] clean up FIXME in do_timer_interrupt

[George Anzinger <george@mvista.com>]

Lee Revell wrote:
> On Thu, 2005-03-03 at 16:45 -0800, Andrew Morton wrote:
> 
>>If efi_enabled is true and efi_set_rtc_mmss(xtime.tv_sec) returns zero, the
>>new code will run set_rtc_mmss(xtime.tv_sec) whereas the old code won't.
> 
> 
> Argh, I should know better then to send patches before having coffee.
> 
> Here's a new patch.  Still ugly, but might be a worthwhile cleanup.

Lets ask the obvious question: Why isn't this update hung on a timer?  It seems 
silly to check this 6000 times per update.  I am sure we can sync a timer to the 
same degree we do timer interrupts, so there _must_ be some other reason.  Right?

George
> 
> Lee
> 
> --- linux-2.6.11-rc4-V0.7.39-02/arch/i386/kernel/time.c	2005-02-14 18:10:49.000000000 -0500
> +++ linux-2.6.11-rc4/arch/i386/kernel/time.c	2005-03-03 20:15:39.000000000 -0500
> @@ -254,16 +254,12 @@
>  			>= USEC_AFTER - ((unsigned) TICK_SIZE) / 2 &&
>  	    (xtime.tv_nsec / 1000)
>  			<= USEC_BEFORE + ((unsigned) TICK_SIZE) / 2) {
> -		/* horrible...FIXME */
> +	        last_rtc_update = xtime.tv_sec;
>  		if (efi_enabled) {
> -	 		if (efi_set_rtc_mmss(xtime.tv_sec) == 0)
> -				last_rtc_update = xtime.tv_sec;
> -			else
> -				last_rtc_update = xtime.tv_sec - 600;
> -		} else if (set_rtc_mmss(xtime.tv_sec) == 0)
> -			last_rtc_update = xtime.tv_sec;
> -		else
> -			last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */
> +		    if (efi_set_rtc_mmss(xtime.tv_sec))
> +			last_rtc_update -= 600;
> +		} else if (set_rtc_mmss(xtime.tv_sec))
> +			last_rtc_update -= 600;
>  	}
>  
>  	if (MCA_bus) {
> 
> 
> -
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-- 
George Anzinger   george@mvista.com
High-res-timers:  http://sourceforge.net/projects/high-res-timers/