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Now that cpufreq provides a pressure value to the scheduler, rename arch_update_thermal_pressure into HW pressure to reflect that it returns a pressure applied by HW (i.e. with a high frequency change) and not always related to thermal mitigation but also generated by max current limitation as an example. Such high frequency signal needs filtering to be smoothed and provide an value that reflects the average available capacity into the scheduler time scale. Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Lukasz Luba <lukasz.luba@arm.com> Reviewed-by: Qais Yousef <qyousef@layalina.io> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://lore.kernel.org/r/20240326091616.3696851-5-vincent.guittot@linaro.org
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_ARM_TOPOLOGY_H
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#define _ASM_ARM_TOPOLOGY_H
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#ifdef CONFIG_ARM_CPU_TOPOLOGY
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#include <linux/cpumask.h>
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#include <linux/arch_topology.h>
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/* big.LITTLE switcher is incompatible with frequency invariance */
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#ifndef CONFIG_BL_SWITCHER
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/* Replace task scheduler's default frequency-invariant accounting */
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#define arch_set_freq_scale topology_set_freq_scale
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#define arch_scale_freq_capacity topology_get_freq_scale
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#define arch_scale_freq_invariant topology_scale_freq_invariant
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#define arch_scale_freq_ref topology_get_freq_ref
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#endif
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/* Replace task scheduler's default cpu-invariant accounting */
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#define arch_scale_cpu_capacity topology_get_cpu_scale
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/* Enable topology flag updates */
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#define arch_update_cpu_topology topology_update_cpu_topology
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/* Replace task scheduler's default HW pressure API */
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#define arch_scale_hw_pressure topology_get_hw_pressure
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#define arch_update_hw_pressure topology_update_hw_pressure
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#else
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static inline void init_cpu_topology(void) { }
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static inline void store_cpu_topology(unsigned int cpuid) { }
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#endif
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#include <asm-generic/topology.h>
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#endif /* _ASM_ARM_TOPOLOGY_H */
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