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| author | Morten Rasmussen | 2018-07-20 15:32:33 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2018-09-10 11:05:47 +0200 |
| commit | 3ba09df4b8b6e3f01ed6381e8fb890840fd0bca3 (patch) | |
| tree | b8aaba43320daaccfc393d05eadace2fc0b6a130 /arch/arm64/include/asm/topology.h | |
| parent | sched/topology, drivers/base/arch_topology: Rebuild the sched_domain hierarch... (diff) | |
| download | kernel-qcow2-linux-3ba09df4b8b6e3f01ed6381e8fb890840fd0bca3.tar.gz kernel-qcow2-linux-3ba09df4b8b6e3f01ed6381e8fb890840fd0bca3.tar.xz kernel-qcow2-linux-3ba09df4b8b6e3f01ed6381e8fb890840fd0bca3.zip | |
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@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
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 <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/topology.h')
| -rw-r--r-- | arch/arm64/include/asm/topology.h | 3 |
1 files changed, 3 insertions, 0 deletions
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 */ |