Re: [PATCH]: __crc_* symbols in System.map

Sam Ravnborg
2004-08-12T04:59:23Z

On Wed, Aug 11, 2004 at 08:55:29PM -0700, David S. Miller wrote:
>
> Shouldn't we be grepping these things out of the System.map file?
>
> For one thing, these can confuse readprofile. It's algorithm is
> to start at _stext, then stop when it sees a line in the System.map
> which is not text (mode is one of 'T' 't' 'W' or 'w')
>
> It will exit early if there are some intermixed __crc_* things in
> there (since they are are mode 'A').
>
> For example, in my current sparc64 kernel I have this:
>
> 00000000004cef80 t do_split
> 00000000004cf2a0 t add_dirent_to_buf
> 00000000004cf5a7 A __crc_init_special_inode
> 00000000004cf640 t make_indexed_dir
> 00000000004cf900 t ext3_add_entry
>
> So no symbols after add_dirent_to_buf will be shown in the profiling
> output of readprofile.
>
> So we should grep them out, right? If so, here is a patch which
> implements that.

I have a patch in this area pending, it moves System.map generation
out of the top-level makefile. And btw simplifies the expression a bit.

iMy patches are only at linux-sam.bkbits.net/kbuild for now,
will post patches later this week.

Would it be an option to skip all 'A' symbols?

Sam