From: Morten Rasmussen Date: Fri, 20 Jul 2018 13:32:33 +0000 (+0100) Subject: sched/topology, arch/arm64: Rebuild the sched_domain hierarchy when the CPU capacity... X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=3ba09df4b8b6e3f01ed6381e8fb890840fd0bca3;p=openwrt%2Fstaging%2Fblogic.git sched/topology, arch/arm64: Rebuild the sched_domain hierarchy when the CPU capacity changes 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. Signed-off-by: Morten Rasmussen Signed-off-by: Peter Zijlstra (Intel) Cc: Catalin Marinas Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Will Deacon Cc: dietmar.eggemann@arm.com Cc: valentin.schneider@arm.com Cc: vincent.guittot@linaro.org Link: http://lkml.kernel.org/r/1532093554-30504-4-git-send-email-morten.rasmussen@arm.com Signed-off-by: Ingo Molnar --- diff --git a/arch/arm64/include/asm/topology.h b/arch/arm64/include/asm/topology.h index 49a0fee4f89b..0524f2438649 100644 --- a/arch/arm64/include/asm/topology.h +++ b/arch/arm64/include/asm/topology.h @@ -45,6 +45,9 @@ 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 #endif /* _ASM_ARM_TOPOLOGY_H */