Re: [PATCH v2 05/28] objtool: Add a pass for generating __mcount_loc

Kees Cook
2020-09-03T21:51:18Z

On Thu, Sep 03, 2020 at 01:30:30PM -0700, Sami Tolvanen wrote:
> From: Peter Zijlstra <peterz@infradead.org>
>
> Add the --mcount option for generating __mcount_loc sections
> needed for dynamic ftrace. Using this pass requires the kernel to
> be compiled with -mfentry and CC_USING_NOP_MCOUNT to be defined
> in Makefile.
>
> Link: https://lore.kernel.org/lkml/20200625200235.GQ4781@hirez.programming.kicks-ass.net/
> Signed-off-by: Peter Zijlstra <peterz@infradead.org>

Hmm, I'm not sure why this hasn't gotten picked up yet. Is this expected
to go through -tip or something else?

Reviewed-by: Kees Cook <keescook@chromium.org>

--
Kees Cook