![]() | |||||||||||||
Messages in this thread |
On Fri 2007-12-14 15:23:55, Ingo Molnar wrote: > > * Rene Herman <rene.herman@gmail.com> wrote: > > > --- a/init/main.c > > +++ b/init/main.c > > @@ -229,10 +229,9 @@ static int __init obsolete_checksetup(char *line) > > } > > > > /* > > - * This should be approx 2 Bo*oMips to start (note initial shift), and will > > - * still work even if initially too large, it will just take slightly longer > > + * Initial value roughly corresponds to a 1 GHz CPU > > */ > > -unsigned long loops_per_jiffy = (1<<12); > > +unsigned long loops_per_jiffy = 1000000000 / HZ; > > > > EXPORT_SYMBOL(loops_per_jiffy); > > this is a factor of ~2400 increase - this will take an eternity to boot > on any older CPU. I don't think we are using outb_p before loops_per_jiffy are initialized -- I believe I'd see oopsen if we did. Factor 2400 increase is bad, but if it only converts 10x 1usec delay into 10x 24msec delay, it is not _that_ bad. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html | ||||||||||||
| Last update: 2007-12-16 00:01 [from the cache] ©2003-2008 | |||||||||||||