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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
30 lines
698 B
C
30 lines
698 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM hw_pressure
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#if !defined(_TRACE_THERMAL_PRESSURE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_THERMAL_PRESSURE_H
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#include <linux/tracepoint.h>
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TRACE_EVENT(hw_pressure_update,
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TP_PROTO(int cpu, unsigned long hw_pressure),
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TP_ARGS(cpu, hw_pressure),
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TP_STRUCT__entry(
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__field(unsigned long, hw_pressure)
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__field(int, cpu)
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),
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TP_fast_assign(
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__entry->hw_pressure = hw_pressure;
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__entry->cpu = cpu;
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),
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TP_printk("cpu=%d hw_pressure=%lu", __entry->cpu, __entry->hw_pressure)
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);
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#endif /* _TRACE_THERMAL_PRESSURE_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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