On Tue, 9 Aug 2022 16:24:25 +0530, Naveen N. Rao wrote:
> Extend commit b39181f7c6907d ("ftrace: Add FTRACE_MCOUNT_MAX_OFFSET to
> avoid adding weak function") to ppc32 and ppc64 -mprofile-kernel by
> defining FTRACE_MCOUNT_MAX_OFFSET.
>
> For ppc64 -mprofile-kernel ABI, we can have two instructions at function
> entry for TOC setup followed by 'mflr r0' and 'bl _mcount'. So, the
> mcount location is at most the 4th instruction in a function. For ppc32,
> mcount location is always the 3rd instruction in a function, preceded by
> 'mflr r0' and 'stw r0,4(r1)'.
>
> [...]
Applied to powerpc/next.
[1/1] powerpc/ftrace: Ignore weak functions
https://git.kernel.org/powerpc/c/7af82ff90a2b0690c2c45818fcce4c4ac3b187f3
cheers
