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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 20:15:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 20:15:18 -0800
commitdc8e7e3ec60bd5ef7868aa88755e9d4c948dc5cc (patch)
treedf6b7002b3672dcd269a5bc1473413f50a12df29 /drivers/acpi
parent2c79c69adc6205fd115e4b1980c979e1e0e1828a (diff)
parent43952886f0b8b3c344c3392b88de067d5fa5419a (diff)
downloadlinux-linaro-android-dc8e7e3ec60bd5ef7868aa88755e9d4c948dc5cc.tar.gz
Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6
* 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: cpuidle/x86/perf: fix power:cpu_idle double end events and throw cpu_idle events from the cpuidle layer intel_idle: open broadcast clock event cpuidle: CPUIDLE_FLAG_CHECK_BM is omap3_idle specific cpuidle: CPUIDLE_FLAG_TLB_FLUSHED is specific to intel_idle cpuidle: delete unused CPUIDLE_FLAG_SHALLOW, BALANCED, DEEP definitions SH, cpuidle: delete use of NOP CPUIDLE_FLAGS_SHALLOW cpuidle: delete NOP CPUIDLE_FLAG_POLL ACPI: processor_idle: delete use of NOP CPUIDLE_FLAGs cpuidle: Rename X86 specific idle poll state[0] from C0 to POLL ACPI, intel_idle: Cleanup idle= internal variables cpuidle: Make cpuidle_enable_device() call poll_idle_init() intel_idle: update Sandy Bridge core C-state residency targets
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/processor_core.c4
-rw-r--r--drivers/acpi/processor_idle.c28
2 files changed, 13 insertions, 19 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index bec561c14be..3c1a2fec8cd 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -23,7 +23,7 @@ static int set_no_mwait(const struct dmi_system_id *id)
{
printk(KERN_NOTICE PREFIX "%s detected - "
"disabling mwait for CPU C-states\n", id->ident);
- idle_nomwait = 1;
+ boot_option_idle_override = IDLE_NOMWAIT;
return 0;
}
@@ -283,7 +283,7 @@ acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in)
{
acpi_status status = AE_OK;
- if (idle_nomwait) {
+ if (boot_option_idle_override == IDLE_NOMWAIT) {
/*
* If mwait is disabled for CPU C-states, the C2C3_FFH access
* mode will be disabled in the parameter of _PDC object.
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index a765b823aa9..d615b7d69bc 100644
--- 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.
@@ -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);