[PATCH v2 05/28] objtool: Add a pass for generating __mcount_loc
Kees Cook
keescook at chromium.org
Thu Sep 3 17:51:10 EDT 2020
On Thu, Sep 03, 2020 at 01:30:30PM -0700, Sami Tolvanen wrote:
> From: Peter Zijlstra <peterz at 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 at 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 at chromium.org>
--
Kees Cook
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