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| author | Valentin Schneider <valentin.schneider@arm.com> | 2020-07-12 19:59:15 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-07-22 11:22:05 +0300 |
| commit | 25980c7a79af42f2daa73e2f475ebf4cbac8253e (patch) | |
| tree | e22a255eca9698525da7ea6e9de531bfefcf1f6b /arch/arm/include/asm/topology.h | |
| parent | 2705937a0395bd15d515a2a302d26ebc8318c035 (diff) | |
| download | linux-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 'arch/arm/include/asm/topology.h')
| -rw-r--r-- | arch/arm/include/asm/topology.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/include/asm/topology.h b/arch/arm/include/asm/topology.h index 435aba289fc5..e0593cf095d0 100644 --- a/arch/arm/include/asm/topology.h +++ b/arch/arm/include/asm/topology.h @@ -16,8 +16,9 @@ /* Enable topology flag updates */ #define arch_update_cpu_topology topology_update_cpu_topology -/* Replace task scheduler's default thermal pressure retrieve API */ +/* Replace task scheduler's default thermal pressure API */ #define arch_scale_thermal_pressure topology_get_thermal_pressure +#define arch_set_thermal_pressure topology_set_thermal_pressure #else |