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path: root/drivers/acpi/processor_idle.c
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Diffstat (limited to 'drivers/acpi/processor_idle.c')
-rw-r--r--drivers/acpi/processor_idle.c106
1 files changed, 3 insertions, 103 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index e9a8026d39f0..f4428e82b352 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -33,8 +33,6 @@
#include <linux/init.h>
#include <linux/cpufreq.h>
#include <linux/slab.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/moduleparam.h>
@@ -82,13 +80,6 @@ module_param(bm_check_disable, uint, 0000);
static unsigned int latency_factor __read_mostly = 2;
module_param(latency_factor, uint, 0644);
-#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.
@@ -164,7 +155,7 @@ static void lapic_timer_check_state(int state, struct acpi_processor *pr,
if (cpu_has(&cpu_data(pr->id), X86_FEATURE_ARAT))
return;
- if (boot_cpu_has(X86_FEATURE_AMDC1E))
+ if (c1e_detected)
type = ACPI_STATE_C1;
/*
@@ -264,7 +255,7 @@ int acpi_processor_resume(struct acpi_device * device)
return 0;
}
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
+#if defined(CONFIG_X86)
static void tsc_check_state(int state)
{
switch (boot_cpu_data.x86_vendor) {
@@ -689,78 +680,6 @@ static int acpi_processor_get_power_info(struct acpi_processor *pr)
return 0;
}
-#ifdef CONFIG_ACPI_PROCFS
-static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset)
-{
- struct acpi_processor *pr = seq->private;
- unsigned int i;
-
-
- if (!pr)
- goto end;
-
- seq_printf(seq, "active state: C%zd\n"
- "max_cstate: C%d\n"
- "maximum allowed latency: %d usec\n",
- pr->power.state ? pr->power.state - pr->power.states : 0,
- max_cstate, pm_qos_request(PM_QOS_CPU_DMA_LATENCY));
-
- seq_puts(seq, "states:\n");
-
- for (i = 1; i <= pr->power.count; i++) {
- seq_printf(seq, " %cC%d: ",
- (&pr->power.states[i] ==
- pr->power.state ? '*' : ' '), i);
-
- if (!pr->power.states[i].valid) {
- seq_puts(seq, "<not supported>\n");
- continue;
- }
-
- switch (pr->power.states[i].type) {
- case ACPI_STATE_C1:
- seq_printf(seq, "type[C1] ");
- break;
- case ACPI_STATE_C2:
- seq_printf(seq, "type[C2] ");
- break;
- case ACPI_STATE_C3:
- seq_printf(seq, "type[C3] ");
- break;
- default:
- seq_printf(seq, "type[--] ");
- break;
- }
-
- seq_puts(seq, "promotion[--] ");
-
- seq_puts(seq, "demotion[--] ");
-
- seq_printf(seq, "latency[%03d] usage[%08d] duration[%020Lu]\n",
- pr->power.states[i].latency,
- pr->power.states[i].usage,
- us_to_pm_timer_ticks(pr->power.states[i].time));
- }
-
- end:
- return 0;
-}
-
-static int acpi_processor_power_open_fs(struct inode *inode, struct file *file)
-{
- return single_open(file, acpi_processor_power_seq_show,
- PDE(inode)->data);
-}
-
-static const struct file_operations acpi_processor_power_fops = {
- .owner = THIS_MODULE,
- .open = acpi_processor_power_open_fs,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-#endif
-
/**
* acpi_idle_bm_check - checks if bus master activity was detected
*/
@@ -803,13 +722,12 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
} else if (cx->entry_method == ACPI_CSTATE_HALT) {
acpi_safe_halt();
} else {
- int unused;
/* IO port based C-state */
inb(cx->address);
/* Dummy wait op - must do something useless after P_LVL2 read
because chipsets cannot guarantee that STPCLK# signal
gets asserted in time to freeze execution properly. */
- unused = inl(acpi_gbl_FADT.xpm_timer_block.address);
+ inl(acpi_gbl_FADT.xpm_timer_block.address);
}
start_critical_timings();
}
@@ -1172,9 +1090,6 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
{
acpi_status status = 0;
static int first_run;
-#ifdef CONFIG_ACPI_PROCFS
- struct proc_dir_entry *entry = NULL;
-#endif
if (boot_option_idle_override)
return 0;
@@ -1223,15 +1138,6 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
if (cpuidle_register_device(&pr->power.dev))
return -EIO;
}
-#ifdef CONFIG_ACPI_PROCFS
- /* 'power' [R] */
- entry = proc_create_data(ACPI_PROCESSOR_FILE_POWER,
- S_IRUGO, acpi_device_dir(device),
- &acpi_processor_power_fops,
- acpi_driver_data(device));
- if (!entry)
- return -EIO;
-#endif
return 0;
}
@@ -1244,11 +1150,5 @@ int acpi_processor_power_exit(struct acpi_processor *pr,
cpuidle_unregister_device(&pr->power.dev);
pr->flags.power_setup_done = 0;
-#ifdef CONFIG_ACPI_PROCFS
- if (acpi_device_dir(device))
- remove_proc_entry(ACPI_PROCESSOR_FILE_POWER,
- acpi_device_dir(device));
-#endif
-
return 0;
}