Re: [PATCH v2 1/2] bpf: make defination of bpf_dump_raw_ok based on CONFIG_KALLSYMS

From: Luis Chamberlain
Date: Wed May 31 2023 - 13:22:30 EST

On Wed, May 31, 2023 at 02:17:44PM +0530, Maninder Singh wrote:
> No functional change with this commit.
> As of now bpf_dump_raw_ok() is dependent on kallsyms_show_value().
> Rearranging the code to return false directly in defination of
> bpf_dump_raw_ok() based on CONFIG_KALLSYMS.
> @reason: next patch will make kallsyms_show_value() defination
> generic and bpf_dump_raw_ok() will return true otherwise.

This reads a bit funny and the split here doesn't help the patch
reviewier, so you can help with that a bit with the commit log
and be a bit clearer to throw in the few pieces of nuggets the
reader should be aware of when reviewing your patch right away.
So how about instaed:

bpf_dump_raw_ok() depends on kallsyms_show_value() and we already
have a false definition for the !CONFIG_KALLSYMS case. But we'll
soon expand on kallsyms_show_value() and so to make the code
easier to follow just provide a direct !CONFIG_KALLSYMS definition
for bpf_dump_raw_ok() as well.

This makes it easier to read and makes it clear bpf_dump_raw_ok()
will immediately return false when !CONFIG_KALLSYMS, making it
easier to understand what happens for heavy users such as bfp.

With this you can add:

Reviewed-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>