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arm64: topology: Drop the useless update to per-cpu cycles
author
Viresh Kumar
<viresh.kumar@linaro.org>
Thu, 10 Dec 2020 05:47:40 +0000
(11:17 +0530)
committer
Catalin Marinas
<catalin.marinas@arm.com>
Tue, 15 Dec 2020 12:37:59 +0000
(12:37 +0000)
The previous call to update_freq_counters_refs() has already updated the
per-cpu variables, don't overwrite them with the same value again.
Fixes:
4b9cf23c179a
("arm64: wrap and generalise counter read functions")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Link:
https://lore.kernel.org/r/7a171f710cdc0f808a2bfbd7db839c0d265527e7.1607579234.git.viresh.kumar@linaro.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/kernel/topology.c
patch
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diff --git
a/arch/arm64/kernel/topology.c
b/arch/arm64/kernel/topology.c
index
b8026ec
..
aebeb6f
100644
(file)
--- a/
arch/arm64/kernel/topology.c
+++ b/
arch/arm64/kernel/topology.c
@@
-304,7
+304,7
@@
void topology_scale_freq_tick(void)
if (unlikely(core_cnt <= prev_core_cnt ||
const_cnt <= prev_const_cnt))
-
goto store_and_exit
;
+
return
;
/*
* /\core arch_max_freq_scale
@@
-321,10
+321,6
@@
void topology_scale_freq_tick(void)
scale = min_t(unsigned long, scale, SCHED_CAPACITY_SCALE);
this_cpu_write(freq_scale, (unsigned long)scale);
-
-store_and_exit:
- this_cpu_write(arch_core_cycles_prev, core_cnt);
- this_cpu_write(arch_const_cycles_prev, const_cnt);
}
#ifdef CONFIG_ACPI_CPPC_LIB