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, 6 insertions, 6 deletions

diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c
index af23e0b9ec92..ea0222a45b7b 100644
--- a/drivers/cpufreq/powernow-k6.c
+++ b/drivers/cpufreq/powernow-k6.c
@@ -68,7 +68,8 @@ static int powernow_k6_get_cpu_multiplier(void)
  *
  *   Tries to change the PowerNow! multiplier
  */
-static void powernow_k6_set_state(unsigned int best_i)
+static void powernow_k6_set_state(struct cpufreq_policy *policy,
+                unsigned int best_i)
 {
         unsigned long outvalue = 0, invalue = 0;
         unsigned long msrval;
@@ -81,9 +82,8 @@ static void powernow_k6_set_state(unsigned int best_i)
 
         freqs.old = busfreq * powernow_k6_get_cpu_multiplier();
         freqs.new = busfreq * clock_ratio[best_i].index;
-        freqs.cpu = 0; /* powernow-k6.c is UP only driver */
 
-        cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+        cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
 
         /* we now need to transform best_i to the BVC format, see AMD#23446 */
 
@@ -98,7 +98,7 @@ static void powernow_k6_set_state(unsigned int best_i)
         msrval = POWERNOW_IOPORT + 0x0;
         wrmsr(MSR_K6_EPMR, msrval, 0); /* disable it again */
 
-        cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+        cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 
         return;
 }
@@ -136,7 +136,7 @@ static int powernow_k6_target(struct cpufreq_policy *policy,
                                 target_freq, relation, &newstate))
                 return -EINVAL;
 
-        powernow_k6_set_state(newstate);
+        powernow_k6_set_state(policy, newstate);
 
         return 0;
 }
@@ -182,7 +182,7 @@ static int powernow_k6_cpu_exit(struct cpufreq_policy *policy)
         unsigned int i;
         for (i = 0; i < 8; i++) {
                 if (i == max_multiplier)
-                        powernow_k6_set_state(i);
+                        powernow_k6_set_state(policy, i);
         }
         cpufreq_frequency_table_put_attr(policy->cpu);
         return 0;