cpufreq / intel_pstate: Remove idle mode PID

Remove dead code from the driver.

Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index a7f1946..b93e385 100644 (file)
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -81,10 +81,8 @@ struct cpudata {
        struct pstate_adjust_policy *pstate_policy;
        struct pstate_data pstate;
        struct _pid pid;
-       struct _pid idle_pid;
 
        int min_pstate_count;
-       int idle_mode;
 
        u64     prev_aperf;
        u64     prev_mperf;
@@ -199,19 +197,6 @@ static inline void intel_pstate_busy_pid_reset(struct cpudata *cpu)
                0);
 }
 
-static inline void intel_pstate_idle_pid_reset(struct cpudata *cpu)
-{
-       pid_p_gain_set(&cpu->idle_pid, cpu->pstate_policy->p_gain_pct);
-       pid_d_gain_set(&cpu->idle_pid, cpu->pstate_policy->d_gain_pct);
-       pid_i_gain_set(&cpu->idle_pid, cpu->pstate_policy->i_gain_pct);
-
-       pid_reset(&cpu->idle_pid,
-               75,
-               50,
-               cpu->pstate_policy->deadband,
-               0);
-}
-
 static inline void intel_pstate_reset_all_pid(void)
 {
        unsigned int cpu;
@@ -481,16 +466,6 @@ static inline void intel_pstate_set_sample_time(struct cpudata *cpu)
        mod_timer_pinned(&cpu->timer, jiffies + delay);
 }
 
-static inline void intel_pstate_idle_mode(struct cpudata *cpu)
-{
-       cpu->idle_mode = 1;
-}
-
-static inline void intel_pstate_normal_mode(struct cpudata *cpu)
-{
-       cpu->idle_mode = 0;
-}
-
 static inline int intel_pstate_get_scaled_busy(struct cpudata *cpu)
 {
        int32_t busy_scaled;
@@ -523,29 +498,6 @@ static inline void intel_pstate_adjust_busy_pstate(struct cpudata *cpu)
                intel_pstate_pstate_decrease(cpu, steps);
 }
 
-static inline void intel_pstate_adjust_idle_pstate(struct cpudata *cpu)
-{
-       int busy_scaled;
-       struct _pid *pid;
-       int ctl = 0;
-       int steps;
-
-       pid = &cpu->idle_pid;
-
-       busy_scaled = intel_pstate_get_scaled_busy(cpu);
-
-       ctl = pid_calc(pid, 100 - busy_scaled);
-
-       steps = abs(ctl);
-       if (ctl < 0)
-               intel_pstate_pstate_decrease(cpu, steps);
-       else
-               intel_pstate_pstate_increase(cpu, steps);
-
-       if (cpu->pstate.current_pstate == cpu->pstate.min_pstate)
-               intel_pstate_normal_mode(cpu);
-}
-
 static void intel_pstate_timer_func(unsigned long __data)
 {
        struct cpudata *cpu = (struct cpudata *) __data;
@@ -601,7 +553,6 @@ static int intel_pstate_init_cpu(unsigned int cpunum)
                (unsigned long)cpu;
        cpu->timer.expires = jiffies + HZ/100;
        intel_pstate_busy_pid_reset(cpu);
-       intel_pstate_idle_pid_reset(cpu);
        intel_pstate_sample(cpu);
        intel_pstate_set_pstate(cpu, cpu->pstate.max_pstate);