On Mon, 28 Nov 2022 15:19:41 +1100, Benjamin Gray wrote:

Started this when writing tests for a feature I'm working on, needing a way to
read/write numbers to system files. After writing some utils to safely handle
file IO and parsing, I realised I'd made the ~6th file read/write implementation
and only(?) number parser that checks all the failure modes when expecting to
parse a single number from a file.

So these utils ended up becoming this series. I also modified some other test
utils I came across while doing so. My understanding is selftests are not expected
to be backported, so I wasn't concerned about only introducing new utils and leaving
the existing implementations be.

[...]

Patches 1 & 2 applied to powerpc/next.

[1/7] selftests/powerpc: Use mfspr/mtspr macros
      https://git.kernel.org/powerpc/c/aecfd680099ba518c34dff2941017c5aa97def52
[2/7] selftests/powerpc: Add ptrace setup_core_pattern() null-terminator
      https://git.kernel.org/powerpc/c/94ba4f2c33f42dae7813dc169a177e922a39560c

cheers