Messages in this thread | | | Date | Sun, 30 Mar 1997 16:05:34 +0200 (MET DST) | From | Ingo Molnar <> | Subject | Re: asm/uaccess.h reimplementation, patch. [was: Re: 2.1 kernel bloat revisited] |
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On Mon, 31 Mar 1997, Paul Gortmaker wrote:
> Just to see what access_ok() was responsible for (in terms of size) > I built two identical kernels with access_ok() defined to zero in one > of them. The sizes were as follows: > > ------------------------------------------------------------------------ > Memory: 6884k/8192k available (488k kernel code, 384k reserved, 436k data) > > Memory: 6800k/8192k available (564k kernel code, 384k reserved, 444k data) > ------------------------------------------------------------------------ > > The config was for math-emu, wd80x3, NFS, hd, ext2, proc and serial. > The resulting kernel wouldn't get past the execve of init, but at least > I got the above Mem line out of it. :)
#define it 1 and you get past that line too ;)
would be nice to see what speed difference it makes. I have the feeling that P5s see lots of pipeline stalls in access_ok().
-- mingo
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