Traditionally on powerpc servers PREEMPT_NONE was used, but these days
multiple distros are building with PREEMPT_VOLUNTARY - Ubuntu, Fedora &
CentOS all enable it.
So update the upstream config to reflect that, and get test coverage
before code hits the distros.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230414132415.821564-8-mpe@ellerman.id.au
CONFIG_HIGH_RES_TIMERS=y
CONFIG_BPF_SYSCALL=y
CONFIG_BPF_JIT=y
+CONFIG_PREEMPT_VOLUNTARY=y
CONFIG_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y