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

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>

1 files changed, 5 insertions, 6 deletions

diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c
index 3fffbe6025cd..37380fb92621 100644
--- a/drivers/cpufreq/e_powersaver.c
+++ b/drivers/cpufreq/e_powersaver.c
@@ -104,7 +104,7 @@ static unsigned int eps_get(unsigned int cpu)
 }
 
 static int eps_set_state(struct eps_cpu_data *centaur,
-                         unsigned int cpu,
+                         struct cpufreq_policy *policy,
                          u32 dest_state)
 {
         struct cpufreq_freqs freqs;
@@ -112,10 +112,9 @@ static int eps_set_state(struct eps_cpu_data *centaur,
         int err = 0;
         int i;
 
-        freqs.old = eps_get(cpu);
+        freqs.old = eps_get(policy->cpu);
         freqs.new = centaur->fsb * ((dest_state >> 8) & 0xff);
-        freqs.cpu = cpu;
-        cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+        cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
 
         /* Wait while CPU is busy */
         rdmsr(MSR_IA32_PERF_STATUS, lo, hi);
@@ -162,7 +161,7 @@ postchange:
                 current_multiplier);
         }
 #endif
-        cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+        cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
         return err;
 }
 
@@ -190,7 +189,7 @@ static int eps_target(struct cpufreq_policy *policy,
 
         /* Make frequency transition */
         dest_state = centaur->freq_table[newstate].index & 0xffff;
-        ret = eps_set_state(centaur, cpu, dest_state);
+        ret = eps_set_state(centaur, policy, dest_state);
         if (ret)
                 printk(KERN_ERR "eps: Timeout!\n");
         return ret;