Commit-ID: e1799a80a4f5a463f252b7325da8bb66dfd55471 Gitweb: https://git.kernel.org/tip/e1799a80a4f5a463f252b7325da8bb66dfd55471 Author: Morten Rasmussen <morten.rasmus...@arm.com> AuthorDate: Fri, 20 Jul 2018 14:32:34 +0100 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Mon, 10 Sep 2018 11:05:48 +0200
sched/topology, arch/arm: Rebuild sched_domain hierarchy when 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 arm. This patch points the arm implementation to arch_topology driver to ensure that full hierarchy rebuild happens when needed. Signed-off-by: Morten Rasmussen <morten.rasmus...@arm.com> Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Russell King <li...@armlinux.org.uk> Cc: Thomas Gleixner <t...@linutronix.de> Cc: dietmar.eggem...@arm.com Cc: valentin.schnei...@arm.com Cc: vincent.guit...@linaro.org Link: http://lkml.kernel.org/r/1532093554-30504-5-git-send-email-morten.rasmus...@arm.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/arm/include/asm/topology.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/include/asm/topology.h b/arch/arm/include/asm/topology.h index 5d88d2f22b2c..2a786f54d8b8 100644 --- a/arch/arm/include/asm/topology.h +++ b/arch/arm/include/asm/topology.h @@ -33,6 +33,9 @@ const struct cpumask *cpu_coregroup_mask(int cpu); /* 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 + #else static inline void init_cpu_topology(void) { }
