Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6

[~andy/linux] / drivers / acpi / processor_idle.c

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 2e8c27d48f2b75f59f0e76436ae94db5f61466a7..e9a8026d39f091444ddcf90446f008fc407cc9c8 100644 (file)
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -76,14 +76,19 @@ static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER;
 module_param(max_cstate, uint, 0000);
 static unsigned int nocst __read_mostly;
 module_param(nocst, uint, 0000);
+static int bm_check_disable __read_mostly;
+module_param(bm_check_disable, uint, 0000);
 
 static unsigned int latency_factor __read_mostly = 2;
 module_param(latency_factor, uint, 0644);
 
-static s64 us_to_pm_timer_ticks(s64 t)
+#ifdef CONFIG_ACPI_PROCFS
+static u64 us_to_pm_timer_ticks(s64 t)
 {
        return div64_u64(t * PM_TIMER_FREQUENCY, 1000000);
 }
+#endif
+
 /*
  * IBM ThinkPad R40e crashes mysteriously when going into C2 or C3.
  * For now disable this. Probably a bug somewhere else.
@@ -731,10 +736,10 @@ static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset)
 
                seq_puts(seq, "demotion[--] ");
 
-               seq_printf(seq, "latency[%03d] usage[%08d] duration[%020llu]\n",
+               seq_printf(seq, "latency[%03d] usage[%08d] duration[%020Lu]\n",
                           pr->power.states[i].latency,
                           pr->power.states[i].usage,
-                          (unsigned long long)pr->power.states[i].time);
+                          us_to_pm_timer_ticks(pr->power.states[i].time));
        }
 
       end:
@@ -763,6 +768,9 @@ static int acpi_idle_bm_check(void)
 {
        u32 bm_status = 0;
 
+       if (bm_check_disable)
+               return 0;
+
        acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_STATUS, &bm_status);
        if (bm_status)
                acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_STATUS, 1);
@@ -861,7 +869,6 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
        ktime_t  kt1, kt2;
        s64 idle_time_ns;
        s64 idle_time;
-       s64 sleep_ticks = 0;
 
        pr = __get_cpu_var(processors);
 
@@ -906,8 +913,6 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
        idle_time = idle_time_ns;
        do_div(idle_time, NSEC_PER_USEC);
 
-       sleep_ticks = us_to_pm_timer_ticks(idle_time);
-
        /* Tell the scheduler how much we idled: */
        sched_clock_idle_wakeup_event(idle_time_ns);
 
@@ -918,7 +923,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
        cx->usage++;
 
        lapic_timer_state_broadcast(pr, cx, 0);
-       cx->time += sleep_ticks;
+       cx->time += idle_time;
        return idle_time;
 }
 
@@ -940,7 +945,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
        ktime_t  kt1, kt2;
        s64 idle_time_ns;
        s64 idle_time;
-       s64 sleep_ticks = 0;
 
 
        pr = __get_cpu_var(processors);
@@ -951,7 +955,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
        if (acpi_idle_suspend)
                return(acpi_idle_enter_c1(dev, state));
 
-       if (acpi_idle_bm_check()) {
+       if (!cx->bm_sts_skip && acpi_idle_bm_check()) {
                if (dev->safe_state) {
                        dev->last_state = dev->safe_state;
                        return dev->safe_state->enter(dev, dev->safe_state);
@@ -1022,11 +1026,10 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
                spin_unlock(&c3_lock);
        }
        kt2 = ktime_get_real();
-       idle_time_ns = ktime_to_us(ktime_sub(kt2, kt1));
+       idle_time_ns = ktime_to_ns(ktime_sub(kt2, kt1));
        idle_time = idle_time_ns;
        do_div(idle_time, NSEC_PER_USEC);
 
-       sleep_ticks = us_to_pm_timer_ticks(idle_time);
        /* Tell the scheduler how much we idled: */
        sched_clock_idle_wakeup_event(idle_time_ns);
 
@@ -1037,7 +1040,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
        cx->usage++;
 
        lapic_timer_state_broadcast(pr, cx, 0);
-       cx->time += sleep_ticks;
+       cx->time += idle_time;
        return idle_time;
 }