powerpc/smp: Create coregroup domain

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Add percpu coregroup maps and masks to create coregroup domain.
If a coregroup doesn't exist, the coregroup domain will be degenerated
in favour of SMT/CACHE domain. Do note this patch is only creating stubs
for cpu_to_coregroup_id. The actual cpu_to_coregroup_id implementation
would be in a subsequent patch.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200810071834.92514-10-srikar@linux.vnet.ibm.com

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Srikar Dronamraju 2020-08-10 12:48:33 +05:30 • committed by Michael Ellerman

parent 6e08630281

commit 72730bfc2a

3 changed files with 68 additions and 1 deletions

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10

arch/powerpc/include/asm/topology.h

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54

arch/powerpc/kernel/smp.c

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5

arch/powerpc/mm/numa.c

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