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authorTomasz Figa <t.figa@samsung.com>2012-11-22 00:09:27 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-11-22 00:09:27 +0100
commitfd06a20852e145b2b96c7c6b655fcb9f23ac4e00 (patch)
treef3175bccc497fd5f2eec31f60b57ec8714f79313 /drivers/cpufreq
parentc0e61cb151f2ff8edd02af23b2bd49f625288124 (diff)
downloadop-kernel-dev-fd06a20852e145b2b96c7c6b655fcb9f23ac4e00.zip
op-kernel-dev-fd06a20852e145b2b96c7c6b655fcb9f23ac4e00.tar.gz
cpufreq: exynos: Broadcast frequency change notifications for all cores
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. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/exynos-cpufreq.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index af2d81e..c0d54a8 100644
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -100,7 +100,8 @@ static int exynos_target(struct cpufreq_policy *policy,
}
arm_volt = volt_table[index];
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+ for_each_cpu(freqs.cpu, policy->cpus)
+ cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
/* When the new frequency is higher than current frequency */
if ((freqs.new > freqs.old) && !safe_arm_volt) {
@@ -115,7 +116,8 @@ static int exynos_target(struct cpufreq_policy *policy,
if (freqs.new != freqs.old)
exynos_info->set_freq(old_index, index);
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+ for_each_cpu(freqs.cpu, policy->cpus)
+ cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
/* 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);
}
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