[PATCH] powerpc/selftests: Use gettid() instead of getppid() for null_syscall

[Michael Ellerman]

On Fri, 4 Jun 2021 12:31:09 +0000 (UTC), Christophe Leroy wrote:
> gettid() is 10% lighter than getppid(), use it for null_syscall selftest.

Applied to powerpc/next.

[1/1] powerpc/selftests: Use gettid() instead of getppid() for null_syscall
      https://git.kernel.org/powerpc/c/a1ea0ca8a6f17d7b79bbc4d05dd4e6ca162d8f15

cheers