arm64: parse cpu capacity-dmips-mhz from DT
authorJuri Lelli <juri.lelli@arm.com>
Mon, 17 Oct 2016 15:46:45 +0000 (16:46 +0100)
committerCatalin Marinas <catalin.marinas@arm.com>
Mon, 7 Nov 2016 18:15:03 +0000 (18:15 +0000)
commit7202bde8b7aea7c914e33c7bc2dfb145587f1bdc
treeb52b66bce99af25b770000fc7bbdaa0d246fdcb7
parentde42fe116dcc157b08d5db367bde4742d4e76af3
arm64: parse cpu capacity-dmips-mhz from DT

With the introduction of cpu capacity-dmips-mhz bindings, CPU capacities
can now be calculated from values extracted from DT and information
coming from cpufreq. Add parsing of DT information at boot time, and
complement it with cpufreq information. Also, store such information
using per CPU variables, as we do for arm.

Caveat: the information provided by this patch will start to be used in
the future. We need to #define arch_scale_cpu_capacity to something
provided in arch, so that scheduler's default implementation (which gets
used if arch_scale_cpu_capacity is not defined) is overwritten.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/kernel/topology.c