Asymmetric cpu capacity can not necessarily be determined accurately at the time the initial sched_domain hierarchy is built during boot. It is therefore necessary to be able to force a full rebuild of the hierarchy later triggered by the arch_topology driver. A full rebuild requires the arch-code to implement arch_update_cpu_topology() which isn't yet implemented for arm64. This patch points the arm64 implementation to arch_topology driver to ensure that full hierarchy rebuild happens when needed.
cc: Catalin Marinas <catalin.mari...@arm.com> cc: Will Deacon <will.dea...@arm.com> Signed-off-by: Morten Rasmussen <morten.rasmus...@arm.com> --- arch/arm64/include/asm/topology.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/include/asm/topology.h b/arch/arm64/include/asm/topology.h index df48212f767b..61ba09d48237 100644 --- a/arch/arm64/include/asm/topology.h +++ b/arch/arm64/include/asm/topology.h @@ -43,6 +43,9 @@ int pcibus_to_node(struct pci_bus *bus); /* Replace task scheduler's default cpu-invariant accounting */ #define arch_scale_cpu_capacity topology_get_cpu_scale +/* Enable topology flag updates */ +#define arch_update_cpu_topology topology_update_cpu_topology + #include <asm-generic/topology.h> #endif /* _ASM_ARM_TOPOLOGY_H */ -- 2.7.4
