Re: cache problem

[Rene B. <re...@we...>]

Alan Buxey wrote:

>
> is 8192 just one page, or would you expect it to be 2?


8192 are 2 pages (pagesize =3D 4096), but __get_free_pages() gives you 1=20
page for 0 and 2 pages for 1 and 3 pages for 2 and so on...

>
> how about using a sizeof((*np)) instead of the 8192?

Doesn`t work properly with kernel_set_cachemode().

I posted yesterday there was a problem in kernel_set_cachemode(). Thats=20
not true. I have made some changes in kernel_set_cachemode(), so that=20
the loop-counter wasn`t calculated correctly anymore. Blame on me! I=20
hope that no one has wasted time to looking whats up in=20
kernel_set_cachemode()...

Nevertheless, kernel_set_cachemode() does not set the cachemode for the=20
last page, if the upper boundary of size does not end up at a multiply=20
of PAGE_SIZE (as it will be with sizeof()). Some little changes should=20
fix this. Maybe its not necessary, but I think the code were more=20
reliable. Maybe I fix it later.


Ciao, Ren=E8