Re: [PATCH 1/2] gcov: re-fix clang-11+ support

[Andrew Morton]

On Wed,  7 Apr 2021 11:54:55 -0700 Nick Desaulniers <ndesaulniers@xxxxxxxxxx> wrote:

> LLVM changed the expected function signature for
> llvm_gcda_emit_function() in the clang-11 release.  Users of clang-11 or
> newer may have noticed their kernels producing invalid coverage
> information:
> 
> $ llvm-cov gcov -a -c -u -f -b <input>.gcda -- gcno=<input>.gcno
> 1 <func>: checksum mismatch, \
>   (<lineno chksum A>, <cfg chksum B>) != (<lineno chksum A>, <cfg chksum C>)
> 2 Invalid .gcda File!
> ...
> 
> Fix up the function signatures so calling this function interprets its
> parameters correctly and computes the correct cfg checksum. In
> particular, in clang-11, the additional checksum is no longer optional.

Which tree is this against?  I'm seeing quite a lot of rejects against
Linus's current.