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powerpc: Add kconfig for muxed smp ipi support

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Compile the new smp ipi mux and demux code only if a platform
will make use of it.  The new config is selected as required.

The new cause_ipi smp op is only available conditionally to point out
configs where the select is required; this makes setting the op an
immediate fail instead of a deferred unresolved symbol at link.

This also creates a new config for power surge powermac upgrade support
that can be disabled in expert mode but is default on.

I also removed the depends / default y on CONFIG_XICS since it is selected
by PSERIES.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Milton Miller
2011-05-10 19:29:42 +00:00
committed by Benjamin Herrenschmidt
parent 23d72bfd8f
commit 1ece355b68
9 changed files with 32 additions and 7 deletions
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1
arch/powerpc/sysdev/xics/Kconfig
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@ -1,5 +1,6 @@
config PPC_XICS
def_bool n
select PPC_SMP_MUXED_IPI
config PPC_ICP_NATIVE
def_bool n