[CPUFREQ] cpufreq_stats: misc cpuinit section annotations

* Stop referencing the callback directly from the __init and __exit
  functions of this driver, and instead explicitly call
  cpufreq_update_policy() et al. This enables the callback function
  to be marked as __cpuinit (and the notifier_block __cpuinitdata),
  thereby saving space when HOTPLUG_CPU=n. This also enables us to
  use other tricks to replace __cpuinit{data} in future.

* cpufreq_stats_free_table() is only called from __cpuinit or __exit
  marked functions, making it an ideal candidate for __cpuexit.

* Fix missing space in the module description

Signed-off-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>

1 files changed, 8 insertions, 10 deletions

diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index 917b9bab9c..8a45d0f93e 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -164,8 +164,7 @@ freq_table_get_index(struct cpufreq_stats *stat, unsigned int freq)
         return -1;
 }
 
-static void
-cpufreq_stats_free_table (unsigned int cpu)
+static void __cpuexit cpufreq_stats_free_table(unsigned int cpu)
 {
         struct cpufreq_stats *stat = cpufreq_stats_table[cpu];
         struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
@@ -305,8 +304,9 @@ cpufreq_stat_notifier_trans (struct notifier_block *nb, unsigned long val,
         return 0;
 }
 
-static int cpufreq_stat_cpu_callback(struct notifier_block *nfb,
-                                        unsigned long action, void *hcpu)
+static int __cpuinit cpufreq_stat_cpu_callback(struct notifier_block *nfb,
+                                               unsigned long action,
+                                               void *hcpu)
 {
         unsigned int cpu = (unsigned long)hcpu;
 
@@ -323,7 +323,7 @@ static int cpufreq_stat_cpu_callback(struct notifier_block *nfb,
         return NOTIFY_OK;
 }
 
-static struct notifier_block cpufreq_stat_cpu_notifier =
+static struct notifier_block cpufreq_stat_cpu_notifier __cpuinitdata =
 {
         .notifier_call = cpufreq_stat_cpu_callback,
 };
@@ -356,8 +356,7 @@ __init cpufreq_stats_init(void)
 
         register_hotcpu_notifier(&cpufreq_stat_cpu_notifier);
         for_each_online_cpu(cpu) {
-                cpufreq_stat_cpu_callback(&cpufreq_stat_cpu_notifier,
-                                CPU_ONLINE, (void *)(long)cpu);
+                cpufreq_update_policy(cpu);
         }
         return 0;
 }
@@ -372,13 +371,12 @@ __exit cpufreq_stats_exit(void)
                         CPUFREQ_TRANSITION_NOTIFIER);
         unregister_hotcpu_notifier(&cpufreq_stat_cpu_notifier);
         for_each_online_cpu(cpu) {
-                cpufreq_stat_cpu_callback(&cpufreq_stat_cpu_notifier,
-                                                CPU_DEAD, (void *)(long)cpu);
+                cpufreq_stats_free_table(cpu);
         }
 }
 
 MODULE_AUTHOR ("Zou Nan hai <nanhai.zou@intel.com>");
-MODULE_DESCRIPTION ("'cpufreq_stats' - A driver to export cpufreq stats"
+MODULE_DESCRIPTION ("'cpufreq_stats' - A driver to export cpufreq stats "
                                 "through sysfs filesystem");
 MODULE_LICENSE ("GPL");