In article <YeT31Ie00WB30491Qd@andrew.cmu.edu> tj2n+@andrew.cmu.edu (Tao Jiang) writes:
quoted text
>
>When I tried compiling linux 0.97, every thing worked fine, except that
>the operation speed is too slow compare to the previous version of
>linux.

I wrote a kernel profiling utility for this, and sent the patches
(small) and a user-level program to print out results (even smaller) to
the kernel mailing-list.  If anybody sees this slow-down problem, and
tries out the profiling code, I'd be interested to have some sample
output. 

If you aren't on the kernel list, I can make the patches available on
the net.

quoted text
>This morning, I tried to compile it with DRAMDISK=512 defined in the Makefile,
>then error came out as:

My mistake: I never tried the ramdisk code in 0.97.  The fix is
extremely simple (and is included in the above-mentioned profiling
diffs, I think): move the #include <linux/string.h> to be the last of
the include-statements.  The reason is that <linux/string.h> wants some
standard types defined, and they get defined in the other include-files. 

                Linus