iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cpufreq: Notify all policy->cpus in cpufreq_notify_transition()

Browse Source 
policy->cpus contains all online cpus that have single shared clock line. And
their frequencies are always updated together.

Many SMP system's cpufreq drivers take care of this in individual drivers but
the best place for this code is in cpufreq core.

This patch modifies cpufreq_notify_transition() to notify frequency change for
all cpus in policy->cpus and hence updates all users of this API.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar
2013-03-24 11:56:43 +05:30
committed by Rafael J. Wysocki
parent fd143b4d6f
commit b43a7ffbf3
51 changed files with 241 additions and 343 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/cpufreq/imx6q-cpufreq.c
View File

@ -50,7 +50,7 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
struct cpufreq_freqs freqs;
struct opp *opp;
unsigned long freq_hz, volt, volt_old;
unsigned int index, cpu;
unsigned int index;
int ret;
ret = cpufreq_frequency_table_target(policy, freq_table, target_freq,
@ -68,10 +68,7 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
if (freqs.old == freqs.new)
return 0;
for_each_online_cpu(cpu) {
freqs.cpu = cpu;
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
}
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
rcu_read_lock();
opp = opp_find_freq_ceil(cpu_dev, &freq_hz);
@ -166,10 +163,7 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
}
}
for_each_online_cpu(cpu) {
freqs.cpu = cpu;
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
}
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return 0;
}