thermal/cpu-cooling, sched/core: Move the arch_set_thermal_pressure() API to generic scheduler code (14533a16) · Commits · 戴 / test

drivers/base/arch_topology.c is only built if CONFIG_GENERIC_ARCH_TOPOLOGY=y, resulting in such build failures: cpufreq_cooling.c:(.text+0x1e7): undefined reference to `arch_set_thermal_pressure' Move it to sched/core.c instead, and keep it enabled on x86 despite us not having a arch_scale_thermal_pressure() facility there, to build-test this thing. Cc: Thara Gopinath <thara.gopinath@linaro.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:

Ingo Molnar <mingo@kernel.org>

drivers/base/arch_topology.c

+0 −11

Original line number	Diff line number	Diff line
		@@ -42,17 +42,6 @@ void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity)
		per_cpu(cpu_scale, cpu) = capacity;
		}

		DEFINE_PER_CPU(unsigned long, thermal_pressure);

		void arch_set_thermal_pressure(struct cpumask *cpus,
		unsigned long th_pressure)
		{
		int cpu;

		for_each_cpu(cpu, cpus)
		WRITE_ONCE(per_cpu(thermal_pressure, cpu), th_pressure);
		}

		static ssize_t cpu_capacity_show(struct device *dev,
		struct device_attribute *attr,
		char *buf)

kernel/sched/core.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -3576,6 +3576,17 @@ unsigned long long task_sched_runtime(struct task_struct *p)
		return ns;
		}

		DEFINE_PER_CPU(unsigned long, thermal_pressure);

		void arch_set_thermal_pressure(struct cpumask *cpus,
		unsigned long th_pressure)
		{
		int cpu;

		for_each_cpu(cpu, cpus)
		WRITE_ONCE(per_cpu(thermal_pressure, cpu), th_pressure);
		}

		/*
		* This function gets called by the timer code, with HZ frequency.
		* We call it with interrupts disabled.

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