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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-01-23 00:35:50 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-01-23 00:35:50 +0100 |
| commit | e6cf623ba3f83118b0f75be2cc1675931e21c887 (patch) | |
| tree | b1ca19f8e64af0515fcc026327a53ce4a0fe3480 /drivers/cpuidle | |
| parent | cefb9409ff995fcc98ce44a07b549ba1b827c31b (diff) | |
| parent | a3299182216397a0b943d2549d1997f4eba2bdd2 (diff) | |
| download | lwn-e6cf623ba3f83118b0f75be2cc1675931e21c887.tar.gz lwn-e6cf623ba3f83118b0f75be2cc1675931e21c887.zip | |
Merge branch 'intel_idle+acpi'
Merge changes updating the ACPI processor driver in order to export
acpi_processor_evaluate_cst() to the code outside of it and adding
ACPI support to the intel_idle driver based on that.
* intel_idle+acpi:
Documentation: admin-guide: PM: Add intel_idle document
intel_idle: Use ACPI _CST on server systems
intel_idle: Add module parameter to prevent ACPI _CST from being used
intel_idle: Allow ACPI _CST to be used for selected known processors
cpuidle: Allow idle states to be disabled by default
intel_idle: Use ACPI _CST for processor models without C-state tables
intel_idle: Refactor intel_idle_cpuidle_driver_init()
ACPI: processor: Export acpi_processor_evaluate_cst()
ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR
ACPI: processor: Clean up acpi_processor_evaluate_cst()
ACPI: processor: Introduce acpi_processor_evaluate_cst()
ACPI: processor: Export function to claim _CST control
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 6 | ||||
| -rw-r--r-- | drivers/cpuidle/sysfs.c | 10 |
2 files changed, 15 insertions, 1 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index ad064d84da5e..de81298051b3 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -575,10 +575,14 @@ static int __cpuidle_register_device(struct cpuidle_device *dev) if (!try_module_get(drv->owner)) return -EINVAL; - for (i = 0; i < drv->state_count; i++) + for (i = 0; i < drv->state_count; i++) { if (drv->states[i].flags & CPUIDLE_FLAG_UNUSABLE) dev->states_usage[i].disable |= CPUIDLE_STATE_DISABLED_BY_DRIVER; + if (drv->states[i].flags & CPUIDLE_FLAG_OFF) + dev->states_usage[i].disable |= CPUIDLE_STATE_DISABLED_BY_USER; + } + per_cpu(cpuidle_devices, dev->cpu) = dev; list_add(&dev->device_list, &cpuidle_detected_devices); diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index 1909584e1e50..cdeedbf02646 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -329,6 +329,14 @@ static ssize_t store_state_disable(struct cpuidle_state *state, return size; } +static ssize_t show_state_default_status(struct cpuidle_state *state, + struct cpuidle_state_usage *state_usage, + char *buf) +{ + return sprintf(buf, "%s\n", + state->flags & CPUIDLE_FLAG_OFF ? "disabled" : "enabled"); +} + define_one_state_ro(name, show_state_name); define_one_state_ro(desc, show_state_desc); define_one_state_ro(latency, show_state_exit_latency); @@ -339,6 +347,7 @@ define_one_state_ro(time, show_state_time); define_one_state_rw(disable, show_state_disable, store_state_disable); define_one_state_ro(above, show_state_above); define_one_state_ro(below, show_state_below); +define_one_state_ro(default_status, show_state_default_status); static struct attribute *cpuidle_state_default_attrs[] = { &attr_name.attr, @@ -351,6 +360,7 @@ static struct attribute *cpuidle_state_default_attrs[] = { &attr_disable.attr, &attr_above.attr, &attr_below.attr, + &attr_default_status.attr, NULL }; |