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authorValentin Schneider <valentin.schneider@arm.com>2020-07-12 19:59:15 +0300
committerPeter Zijlstra <peterz@infradead.org>2020-07-22 11:22:05 +0300
commit25980c7a79af42f2daa73e2f475ebf4cbac8253e (patch)
treee22a255eca9698525da7ea6e9de531bfefcf1f6b /include/linux/arch_topology.h
parent2705937a0395bd15d515a2a302d26ebc8318c035 (diff)
downloadlinux-25980c7a79af42f2daa73e2f475ebf4cbac8253e.tar.xz
arch_topology, sched/core: Cleanup thermal pressure definition
The following commit: 14533a16c46d ("thermal/cpu-cooling, sched/core: Move the arch_set_thermal_pressure() API to generic scheduler code") moved the definition of arch_set_thermal_pressure() to sched/core.c, but kept its declaration in linux/arch_topology.h. When building e.g. an x86 kernel with CONFIG_SCHED_THERMAL_PRESSURE=y, cpufreq_cooling.c ends up getting the declaration of arch_set_thermal_pressure() from include/linux/arch_topology.h, which is somewhat awkward. On top of this, sched/core.c unconditionally defines o The thermal_pressure percpu variable o arch_set_thermal_pressure() while arch_scale_thermal_pressure() does nothing unless redefined by the architecture. arch_*() functions are meant to be defined by architectures, so revert the aforementioned commit and re-implement it in a way that keeps arch_set_thermal_pressure() architecture-definable, and doesn't define the thermal pressure percpu variable for kernels that don't need it (CONFIG_SCHED_THERMAL_PRESSURE=n). Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200712165917.9168-2-valentin.schneider@arm.com
Diffstat (limited to 'include/linux/arch_topology.h')
-rw-r--r--include/linux/arch_topology.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h
index 0566cb3314ef..69b1dabe39dc 100644
--- a/include/linux/arch_topology.h
+++ b/include/linux/arch_topology.h
@@ -39,8 +39,8 @@ static inline unsigned long topology_get_thermal_pressure(int cpu)
return per_cpu(thermal_pressure, cpu);
}
-void arch_set_thermal_pressure(struct cpumask *cpus,
- unsigned long th_pressure);
+void topology_set_thermal_pressure(const struct cpumask *cpus,
+ unsigned long th_pressure);
struct cpu_topology {
int thread_id;