Commit 51550a48 authored by Viresh Kumar's avatar Viresh Kumar Committed by Catalin Marinas
Browse files

arm64: topology: Drop the useless update to per-cpu cycles 



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: 4b9cf23c ("arm64: wrap and generalise counter read functions")
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: default avatarIonela Voinescu <ionela.voinescu@arm.com>
Reviewed-by: default avatarSudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/7a171f710cdc0f808a2bfbd7db839c0d265527e7.1607579234.git.viresh.kumar@linaro.org


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent d8897975

arch/arm64/kernel/topology.c

+1 −5
Original line number Diff line number Diff line
@@ -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