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Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
-rw-r--r--drivers/cpufreq/cpufreq.c53
1 files changed, 0 insertions, 53 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 6eca12ab71d7..58e1a39b4d22 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -103,59 +103,6 @@ static struct cpufreq_driver *cpufreq_driver;
static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data);
static DEFINE_RWLOCK(cpufreq_driver_lock);
-static DEFINE_PER_CPU(struct update_util_data *, cpufreq_update_util_data);
-
-/**
- * cpufreq_set_update_util_data - Populate the CPU's update_util_data pointer.
- * @cpu: The CPU to set the pointer for.
- * @data: New pointer value.
- *
- * Set and publish the update_util_data pointer for the given CPU. That pointer
- * points to a struct update_util_data object containing a callback function
- * to call from cpufreq_update_util(). That function will be called from an RCU
- * read-side critical section, so it must not sleep.
- *
- * Callers must use RCU-sched callbacks to free any memory that might be
- * accessed via the old update_util_data pointer or invoke synchronize_sched()
- * right after this function to avoid use-after-free.
- */
-void cpufreq_set_update_util_data(int cpu, struct update_util_data *data)
-{
- if (WARN_ON(data && !data->func))
- return;
-
- rcu_assign_pointer(per_cpu(cpufreq_update_util_data, cpu), data);
-}
-EXPORT_SYMBOL_GPL(cpufreq_set_update_util_data);
-
-/**
- * cpufreq_update_util - Take a note about CPU utilization changes.
- * @time: Current time.
- * @util: Current utilization.
- * @max: Utilization ceiling.
- *
- * This function is called by the scheduler on every invocation of
- * update_load_avg() on the CPU whose utilization is being updated.
- *
- * It can only be called from RCU-sched read-side critical sections.
- */
-void cpufreq_update_util(u64 time, unsigned long util, unsigned long max)
-{
- struct update_util_data *data;
-
-#ifdef CONFIG_LOCKDEP
- WARN_ON(debug_locks && !rcu_read_lock_sched_held());
-#endif
-
- data = rcu_dereference_sched(*this_cpu_ptr(&cpufreq_update_util_data));
- /*
- * If this isn't inside of an RCU-sched read-side critical section, data
- * may become NULL after the check below.
- */
- if (data)
- data->func(data, time, util, max);
-}
-
/* Flag to suspend/resume CPUFreq governors */
static bool cpufreq_suspended;