Commit-ID: 3ba09df4b8b6e3f01ed6381e8fb890840fd0bca3 Gitweb: https://git.kernel.org/tip/3ba09df4b8b6e3f01ed6381e8fb890840fd0bca3 Author: Morten Rasmussen <morten.rasmussen@xxxxxxx> AuthorDate: Fri, 20 Jul 2018 14:32:33 +0100 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Mon, 10 Sep 2018 11:05:47 +0200 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 <morten.rasmussen@xxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Will Deacon <will.deacon@xxxxxxx> Cc: dietmar.eggemann@xxxxxxx Cc: valentin.schneider@xxxxxxx Cc: vincent.guittot@xxxxxxxxxx Link: http://lkml.kernel.org/r/1532093554-30504-4-git-send-email-morten.rasmussen@xxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- 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 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 <asm-generic/topology.h> #endif /* _ASM_ARM_TOPOLOGY_H */
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