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thermal/cpu-cooling, sched/core: Move the arch_set_thermal_pressure() API to generic scheduler code

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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>
This commit is contained in:
Ingo Molnar 2020-03-06 14:26:31 +01:00
parent d94a9df490
commit 14533a16c4
2 changed files with 11 additions and 11 deletions
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11
drivers/base/arch_topology.c
View File

@ -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)

11
kernel/sched/core.c
View File

@ -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.