[PATCH] cpufreq: exynos: Broadcast frequency change notifications for all cores
From: viresh.kumar@linaro.org (Viresh Kumar)
Date: 2013-01-31 04:20:37
Also in:
linux-pm, linux-samsung-soc
On Tue, Nov 13, 2012 at 2:56 PM, Tomasz Figa [off-list ref] wrote:
On Exynos SoCs all cores share the same frequency setting, so changing frequency of one core will affect rest of cores. This patch modifies the exynos-cpufreq driver to inform cpufreq core about this behavior and broadcast frequency change notifications for all cores.
quoted hunk ↗ jump to hunk
/* When the new frequency is lower than current frequency */ if ((freqs.new < freqs.old) ||@@ -235,6 +237,7 @@ static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy) cpumask_copy(policy->related_cpus, cpu_possible_mask); cpumask_copy(policy->cpus, cpu_online_mask); } else { + policy->shared_type = CPUFREQ_SHARED_TYPE_ANY; cpumask_setall(policy->cpus);
I couldn't understand the use of this change. Can you please explain ?