Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / drivers / acpi / processor_idle.c

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index dcb38f8ddfda09142f5962cfcfe38b9aa9fc5570..d615b7d69bcaff7c29847b2eee37e4b08876dc90 100644 (file)
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -79,6 +79,13 @@ module_param(bm_check_disable, uint, 0000);
 static unsigned int latency_factor __read_mostly = 2;
 module_param(latency_factor, uint, 0644);
 
+static int disabled_by_idle_boot_param(void)
+{
+       return boot_option_idle_override == IDLE_POLL ||
+               boot_option_idle_override == IDLE_FORCE_MWAIT ||
+               boot_option_idle_override == IDLE_HALT;
+}
+
 /*
  * IBM ThinkPad R40e crashes mysteriously when going into C2 or C3.
  * For now disable this. Probably a bug somewhere else.
@@ -455,7 +462,7 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
                                continue;
                        }
                        if (cx.type == ACPI_STATE_C1 &&
-                                       (idle_halt || idle_nomwait)) {
+                           (boot_option_idle_override == IDLE_NOMWAIT)) {
                                /*
                                 * In most cases the C1 space_id obtained from
                                 * _CST object is FIXED_HARDWARE access mode.
@@ -746,7 +753,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
        struct acpi_processor *pr;
        struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
 
-       pr = __get_cpu_var(processors);
+       pr = __this_cpu_read(processors);
 
        if (unlikely(!pr))
                return 0;
@@ -787,7 +794,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
        s64 idle_time_ns;
        s64 idle_time;
 
-       pr = __get_cpu_var(processors);
+       pr = __this_cpu_read(processors);
 
        if (unlikely(!pr))
                return 0;
@@ -864,7 +871,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
        s64 idle_time;
 
 
-       pr = __get_cpu_var(processors);
+       pr = __this_cpu_read(processors);
 
        if (unlikely(!pr))
                return 0;
@@ -1016,7 +1023,6 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
                state->flags = 0;
                switch (cx->type) {
                        case ACPI_STATE_C1:
-                       state->flags |= CPUIDLE_FLAG_SHALLOW;
                        if (cx->entry_method == ACPI_CSTATE_FFH)
                                state->flags |= CPUIDLE_FLAG_TIME_VALID;
 
@@ -1025,16 +1031,13 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
                        break;
 
                        case ACPI_STATE_C2:
-                       state->flags |= CPUIDLE_FLAG_BALANCED;
                        state->flags |= CPUIDLE_FLAG_TIME_VALID;
                        state->enter = acpi_idle_enter_simple;
                        dev->safe_state = state;
                        break;
 
                        case ACPI_STATE_C3:
-                       state->flags |= CPUIDLE_FLAG_DEEP;
                        state->flags |= CPUIDLE_FLAG_TIME_VALID;
-                       state->flags |= CPUIDLE_FLAG_CHECK_BM;
                        state->enter = pr->flags.bm_check ?
                                        acpi_idle_enter_bm :
                                        acpi_idle_enter_simple;
@@ -1058,7 +1061,7 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
 {
        int ret = 0;
 
-       if (boot_option_idle_override)
+       if (disabled_by_idle_boot_param())
                return 0;
 
        if (!pr)
@@ -1089,19 +1092,10 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
        acpi_status status = 0;
        static int first_run;
 
-       if (boot_option_idle_override)
+       if (disabled_by_idle_boot_param())
                return 0;
 
        if (!first_run) {
-               if (idle_halt) {
-                       /*
-                        * When the boot option of "idle=halt" is added, halt
-                        * is used for CPU IDLE.
-                        * In such case C2/C3 is meaningless. So the max_cstate
-                        * is set to one.
-                        */
-                       max_cstate = 1;
-               }
                dmi_check_system(processor_power_dmi_table);
                max_cstate = acpi_processor_cstate_check(max_cstate);
                if (max_cstate < ACPI_C_STATES_MAX)
@@ -1142,7 +1136,7 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
 int acpi_processor_power_exit(struct acpi_processor *pr,
                              struct acpi_device *device)
 {
-       if (boot_option_idle_override)
+       if (disabled_by_idle_boot_param())
                return 0;
 
        cpuidle_unregister_device(&pr->power.dev);