On Fri, 09 Jun 2023 09:15:01 +0530, Naveen N Rao wrote:
> Ftrace on ppc32 expects a three instruction sequence at the beginning of
> each function when specifying -pg:
> mflr r0
> stw r0,4(r1)
> bl _mcount
>
> This is the case with all supported versions of gcc. Clang however emits
> a branch to _mcount after the function prologue, similar to the pre
> -mprofile-kernel ABI on ppc64. This is not supported.
>
> [...]
Applied to powerpc/next.
[1/1] powerpc/ftrace: Disable ftrace on ppc32 if using clang
https://git.kernel.org/powerpc/c/d24da1f85530a5b47590c0febd1395dd8fc73124
cheers
