[PATCH v4 3/3] arm64: implement CPPC FFH support using AMUs
Catalin Marinas
catalin.marinas at arm.com
Thu Nov 12 13:00:46 EST 2020
On Fri, Nov 06, 2020 at 12:53:34PM +0000, Ionela Voinescu wrote:
> +static inline
> +int counters_read_on_cpu(int cpu, smp_call_func_t func, u64 *val)
> +{
> + if (!cpu_has_amu_feat(cpu))
> + return -EOPNOTSUPP;
> +
> + smp_call_function_single(cpu, func, val, 1);
> +
> + return 0;
> +}
I got lost in the cpufreq call chains. Can this function ever be called
with interrupts disabled?
--
Catalin
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