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[v2,05/10] arm: wire frequency-invariant accounting support up to the task scheduler

Message ID 20170706094948.8779-6-dietmar.eggemann@arm.com (mailing list archive)
State Changes Requested, archived
Headers show

Commit Message

Dietmar Eggemann July 6, 2017, 9:49 a.m. UTC
Commit dfbca41f3479 ("sched: Optimize freq invariant accounting")
changed the wiring which now has to be done by associating
arch_scale_freq_capacity with the actual implementation provided
by the architecture.

Define arch_scale_freq_capacity to use the arch_topology "driver"
function topology_get_freq_scale() for the task scheduler's
frequency-invariant accounting instead of the default
arch_scale_freq_capacity() in kernel/sched/sched.h.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Juri Lelli <juri.lelli@arm.com>
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
Tested-by: Juri Lelli <juri.lelli@arm.com>
Reviewed-by: Juri Lelli <juri.lelli@arm.com>
---
 arch/arm/include/asm/topology.h | 3 +++
 1 file changed, 3 insertions(+)

Comments

Viresh Kumar July 6, 2017, 10:46 a.m. UTC | #1
On 06-07-17, 10:49, Dietmar Eggemann wrote:
> Commit dfbca41f3479 ("sched: Optimize freq invariant accounting")
> changed the wiring which now has to be done by associating
> arch_scale_freq_capacity with the actual implementation provided
> by the architecture.
> 
> Define arch_scale_freq_capacity to use the arch_topology "driver"
> function topology_get_freq_scale() for the task scheduler's
> frequency-invariant accounting instead of the default
> arch_scale_freq_capacity() in kernel/sched/sched.h.
> 
> Cc: Russell King <linux@arm.linux.org.uk>
> Cc: Juri Lelli <juri.lelli@arm.com>
> Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
> Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
> Tested-by: Juri Lelli <juri.lelli@arm.com>
> Reviewed-by: Juri Lelli <juri.lelli@arm.com>
> ---
>  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 ca05d1b90411..57aebfa03e24 100644
> --- a/arch/arm/include/asm/topology.h
> +++ b/arch/arm/include/asm/topology.h
> @@ -29,6 +29,9 @@ const struct cpumask *cpu_coregroup_mask(int cpu);
>  /* Subscribe for input data for frequency-invariant load-tracking */
>  #define arch_set_freq_scale topology_set_freq_scale
>  
> +/* Replace task scheduler's default frequency-invariant accounting */
> +#define arch_scale_freq_capacity topology_get_freq_scale
> +
>  #else
>  
>  static inline void init_cpu_topology(void) { }

Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
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Patch

diff --git a/arch/arm/include/asm/topology.h b/arch/arm/include/asm/topology.h
index ca05d1b90411..57aebfa03e24 100644
--- a/arch/arm/include/asm/topology.h
+++ b/arch/arm/include/asm/topology.h
@@ -29,6 +29,9 @@  const struct cpumask *cpu_coregroup_mask(int cpu);
 /* Subscribe for input data for frequency-invariant load-tracking */
 #define arch_set_freq_scale topology_set_freq_scale
 
+/* Replace task scheduler's default frequency-invariant accounting */
+#define arch_scale_freq_capacity topology_get_freq_scale
+
 #else
 
 static inline void init_cpu_topology(void) { }