Messages in this thread | | | Date | Mon, 17 Feb 2003 16:15:50 +0200 | From | Matti Aarnio <> | Subject | Re: [PATCH *] use 64 bit jiffies |
| |
On Mon, Feb 17, 2003 at 02:55:05PM +0100, Jörn Engel wrote:
With:
> +#ifdef CONFIG_DEBUG_JIFFIESWRAP > + /* Make the jiffies counter wrap around sooner. */ > +# define INITIAL_JIFFIES ((unsigned long)(-300*HZ)) > +#else > +# define INITIAL_JIFFIES 0 > +#endif
This will store constants into jiffies_msb_flips: ("1" for DEBUG_JIFFIESWRAP, "0" otherwise.) Wouldn't zero be what will always be needed ?
> -unsigned long volatile jiffies; > +unsigned long volatile jiffies = INITIAL_JIFFIES; > #ifdef NEEDS_JIFFIES_64 > -static unsigned int volatile jiffies_msb_flips; > +static unsigned int volatile > + jiffies_msb_flips = INITIAL_JIFFIES>>(BITS_PER_LONG-1); > #endif
/Matti Aarnio - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |