On Thu, Jan 02, 2025 at 02:55:01PM -0500, Steven Rostedt wrote: > On Thu, 2 Jan 2025 20:48:14 +0100 > Peter Zijlstra <[email protected]> wrote: > > > *sigh*.. can we please just either add the 'hole' symbols in symtab, or > > fix symtab to have entry size? > > > > You're just fixing your one problem and leaving everybody else that has > > extra data inside the dead weak things up a creek :/ > > > > Eg. if might make sense to also ignore alternative / static_branch / > > static_call patching for such 'dead' code. Yes, that's not an immediate > > problem atm, but just fixing __mcount_loc seems very short sighted. > > Read my reply to the email that I forgot to add to the cover letter (but > mention in the last patch). Fixing kallsyms does not remove the place > holders in the available_filter_functions. This has nothing to do with > kallsyms. I need to remove the fentry/mcount references in the mcount_loc > section. > > The kallsyms is a completely different issue.
It is not. If kallsyms is fixed, you can use that to tell which fentry/mcount sites are 'invalid'. Better yet, other people can then also tell if their things are inside dead weak code or not.
