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powerpc: Allow platforms to force-enable CONFIG_SMP 

Of the 64-bit Book3S platforms, only powermac supports booting on an
actual non-SMP system. The other platforms can be built with SMP
disabled, but it doesn't make a lot of sense given the CPUs they support
are all multicore or multithreaded.

So give platforms the option of forcing SMP=y.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2017-04-05 12:44:49 +10:00
parent 590c369e7e
commit ebbe9d7d3a
1 changed files with 7 additions and 1 deletions
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8
arch/powerpc/platforms/Kconfig.cputype
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@ -371,10 +371,16 @@ config PPC_PERF_CTRS
help
This enables the powerpc-specific perf_event back-end.
config FORCE_SMP
# Allow platforms to force SMP=y by selecting this
bool
default n
select SMP
config SMP
depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
select GENERIC_IRQ_MIGRATION
bool "Symmetric multi-processing support"
bool "Symmetric multi-processing support" if !FORCE_SMP
---help---
This enables support for systems with more than one CPU. If you have
a system with only one CPU, say N. If you have a system with more