cpufreq: intel_pstate: Drop ->update_util from pstate_funcs

All systems use the same P-state selection "powersave" algorithm
in the active mode if HWP is not used, so there's no need to provide
a pointer for it in struct pstate_funcs any more.

Drop ->update_util from struct pstate_funcs and make
intel_pstate_set_update_util_hook() use intel_pstate_update_util()
directly.

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 0eedc4f..f562ca7 100644 (file)
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -268,7 +268,6 @@ static struct cpudata **all_cpu_data;
  * @get_scaling:       Callback to get frequency scaling factor
  * @get_val:           Callback to convert P state to actual MSR write value
  * @get_vid:           Callback to get VID data for Atom platforms
- * @update_util:       Active mode utilization update callback.
  *
  * Core and Atom CPU models have different way to get P State limits. This
  * structure is used to store those callbacks.
@@ -282,8 +281,6 @@ struct pstate_funcs {
        int (*get_aperf_mperf_shift)(void);
        u64 (*get_val)(struct cpudata*, int pstate);
        void (*get_vid)(struct cpudata *);
-       void (*update_util)(struct update_util_data *data, u64 time,
-                           unsigned int flags);
 };
 
 static struct pstate_funcs pstate_funcs __read_mostly;
@@ -1556,7 +1553,6 @@ static struct pstate_funcs core_funcs = {
        .get_turbo = core_get_turbo_pstate,
        .get_scaling = core_get_scaling,
        .get_val = core_get_val,
-       .update_util = intel_pstate_update_util,
 };
 
 static const struct pstate_funcs silvermont_funcs = {
@@ -1567,7 +1563,6 @@ static const struct pstate_funcs silvermont_funcs = {
        .get_val = atom_get_val,
        .get_scaling = silvermont_get_scaling,
        .get_vid = atom_get_vid,
-       .update_util = intel_pstate_update_util,
 };
 
 static const struct pstate_funcs airmont_funcs = {
@@ -1578,7 +1573,6 @@ static const struct pstate_funcs airmont_funcs = {
        .get_val = atom_get_val,
        .get_scaling = airmont_get_scaling,
        .get_vid = atom_get_vid,
-       .update_util = intel_pstate_update_util,
 };
 
 static const struct pstate_funcs knl_funcs = {
@@ -1589,7 +1583,6 @@ static const struct pstate_funcs knl_funcs = {
        .get_aperf_mperf_shift = knl_get_aperf_mperf_shift,
        .get_scaling = core_get_scaling,
        .get_val = core_get_val,
-       .update_util = intel_pstate_update_util,
 };
 
 static const struct pstate_funcs bxt_funcs = {
@@ -1599,7 +1592,6 @@ static const struct pstate_funcs bxt_funcs = {
        .get_turbo = core_get_turbo_pstate,
        .get_scaling = core_get_scaling,
        .get_val = core_get_val,
-       .update_util = intel_pstate_update_util,
 };
 
 #define ICPU(model, policy) \
@@ -1702,7 +1694,7 @@ static void intel_pstate_set_update_util_hook(unsigned int cpu_num)
        /* Prevent intel_pstate_update_util() from using stale data. */
        cpu->sample.time = 0;
        cpufreq_add_update_util_hook(cpu_num, &cpu->update_util,
-                                    pstate_funcs.update_util);
+                                    intel_pstate_update_util);
        cpu->update_util_set = true;
 }
 
@@ -2148,7 +2140,6 @@ static void __init copy_cpu_funcs(struct pstate_funcs *funcs)
        pstate_funcs.get_scaling = funcs->get_scaling;
        pstate_funcs.get_val   = funcs->get_val;
        pstate_funcs.get_vid   = funcs->get_vid;
-       pstate_funcs.update_util = funcs->update_util;
        pstate_funcs.get_aperf_mperf_shift = funcs->get_aperf_mperf_shift;
 }
 
@@ -2293,9 +2284,7 @@ static int __init intel_pstate_init(void)
 
        if (x86_match_cpu(hwp_support_ids)) {
                copy_cpu_funcs(&core_funcs);
-               if (no_hwp) {
-                       pstate_funcs.update_util = intel_pstate_update_util;
-               } else {
+               if (!no_hwp) {
                        hwp_active++;
                        intel_pstate.attr = hwp_cpufreq_attrs;
                        goto hwp_cpu_matched;