Power management and ACPI fixes for 3.10-rc2
- intel_pstate driver fixes and cleanups from Dirk Brandewie and
Wei Yongjun.
- cpufreq fixes related to ARM big.LITTLE support and the
cpufreq-cpu0 driver from Viresh Kumar.
- Assorted cpufreq fixes from Srivatsa S. Bhat, Borislav Petkov,
Wolfram Sang, Alexander Shiyan, and Nishanth Menon.
- Assorted ACPI fixes from Catalin Marinas, Lan Tianyu, Alex Hung,
Jan-Simon Möller, and Rafael J. Wysocki.
- Fix for a kfree() under spinlock in the PM core from Shuah Khan.
- PM documentation updates from Borislav Petkov and Zhang Rui.
/
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Merge tag 'pm+acpi-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
- intel_pstate driver fixes and cleanups from Dirk Brandewie and Wei
Yongjun.
- cpufreq fixes related to ARM big.LITTLE support and the cpufreq-cpu0
driver from Viresh Kumar.
- Assorted cpufreq fixes from Srivatsa S Bhat, Borislav Petkov, Wolfram
Sang, Alexander Shiyan, and Nishanth Menon.
- Assorted ACPI fixes from Catalin Marinas, Lan Tianyu, Alex Hung,
Jan-Simon Möller, and Rafael J Wysocki.
- Fix for a kfree() under spinlock in the PM core from Shuah Khan.
- PM documentation updates from Borislav Petkov and Zhang Rui.
* tag 'pm+acpi-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (30 commits)
cpufreq: Preserve sysfs files across suspend/resume
ACPI / scan: Fix memory leak on acpi_scan_init_hotplug() error path
PM / hibernate: Correct documentation
PM / Documentation: remove inaccurate suspend/hibernate transition lantency statement
PM: Documentation update for freeze state
cpufreq / intel_pstate: use vzalloc() instead of vmalloc()/memset(0)
cpufreq, ondemand: Remove leftover debug line
PM: Avoid calling kfree() under spinlock in dev_pm_put_subsys_data()
cpufreq / kirkwood: don't check resource with devm_ioremap_resource
cpufreq / intel_pstate: remove #ifdef MODULE compile fence
cpufreq / intel_pstate: Remove idle mode PID
cpufreq / intel_pstate: fix ffmpeg regression
cpufreq / intel_pstate: use lowest requested max performance
cpufreq / intel_pstate: remove idle time and duration from sample and calculations
cpufreq: Fix incorrect dependecies for ARM SA11xx drivers
cpufreq: ARM big LITTLE: Fix Kconfig entries
cpufreq: cpufreq-cpu0: Free parent node for error cases
cpufreq: cpufreq-cpu0: defer probe when regulator is not ready
cpufreq: Issue CPUFREQ_GOV_POLICY_EXIT notifier before dropping policy refcount
cpufreq: governors: Fix CPUFREQ_GOV_POLICY_{INIT|EXIT} notifiers
...
This commit is contained in:
Linus Torvalds
Коммит
d5fe85af85
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|
@ -268,7 +268,7 @@ situations.
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System Power Management Phases
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------------------------------
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Suspending or resuming the system is done in several phases. Different phases
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are used for standby or memory sleep states ("suspend-to-RAM") and the
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are used for freeze, standby, and memory sleep states ("suspend-to-RAM") and the
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hibernation state ("suspend-to-disk"). Each phase involves executing callbacks
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for every device before the next phase begins. Not all busses or classes
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support all these callbacks and not all drivers use all the callbacks. The
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@ -309,7 +309,8 @@ execute the corresponding method from dev->driver->pm instead if there is one.
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Entering System Suspend
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-----------------------
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When the system goes into the standby or memory sleep state, the phases are:
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When the system goes into the freeze, standby or memory sleep state,
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the phases are:
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prepare, suspend, suspend_late, suspend_noirq.
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@ -368,7 +369,7 @@ the devices that were suspended.
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Leaving System Suspend
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----------------------
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When resuming from standby or memory sleep, the phases are:
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When resuming from freeze, standby or memory sleep, the phases are:
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resume_noirq, resume_early, resume, complete.
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@ -433,8 +434,8 @@ the system log.
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Entering Hibernation
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--------------------
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Hibernating the system is more complicated than putting it into the standby or
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memory sleep state, because it involves creating and saving a system image.
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Hibernating the system is more complicated than putting it into the other
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sleep states, because it involves creating and saving a system image.
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Therefore there are more phases for hibernation, with a different set of
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callbacks. These phases always run after tasks have been frozen and memory has
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been freed.
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@ -485,8 +486,8 @@ image forms an atomic snapshot of the system state.
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At this point the system image is saved, and the devices then need to be
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prepared for the upcoming system shutdown. This is much like suspending them
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before putting the system into the standby or memory sleep state, and the phases
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are similar.
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before putting the system into the freeze, standby or memory sleep state,
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and the phases are similar.
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9. The prepare phase is discussed above.
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@ -7,8 +7,8 @@ running. The interface exists in /sys/power/ directory (assuming sysfs
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is mounted at /sys).
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/sys/power/state controls system power state. Reading from this file
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returns what states are supported, which is hard-coded to 'standby'
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(Power-On Suspend), 'mem' (Suspend-to-RAM), and 'disk'
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returns what states are supported, which is hard-coded to 'freeze',
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'standby' (Power-On Suspend), 'mem' (Suspend-to-RAM), and 'disk'
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(Suspend-to-Disk).
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Writing to this file one of those strings causes the system to
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|
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@ -15,8 +15,10 @@ A suspend/hibernation notifier may be used for this purpose.
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The subsystems or drivers having such needs can register suspend notifiers that
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will be called upon the following events by the PM core:
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PM_HIBERNATION_PREPARE The system is going to hibernate or suspend, tasks will
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be frozen immediately.
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PM_HIBERNATION_PREPARE The system is going to hibernate, tasks will be frozen
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immediately. This is different from PM_SUSPEND_PREPARE
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below because here we do additional work between notifiers
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and drivers freezing.
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PM_POST_HIBERNATION The system memory state has been restored from a
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hibernation image or an error occurred during
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|
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@ -2,12 +2,26 @@
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System Power Management States
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The kernel supports three power management states generically, though
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each is dependent on platform support code to implement the low-level
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details for each state. This file describes each state, what they are
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The kernel supports four power management states generically, though
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one is generic and the other three are dependent on platform support
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code to implement the low-level details for each state.
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This file describes each state, what they are
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commonly called, what ACPI state they map to, and what string to write
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to /sys/power/state to enter that state
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state: Freeze / Low-Power Idle
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ACPI state: S0
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String: "freeze"
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This state is a generic, pure software, light-weight, low-power state.
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It allows more energy to be saved relative to idle by freezing user
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space and putting all I/O devices into low-power states (possibly
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lower-power than available at run time), such that the processors can
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spend more time in their idle states.
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This state can be used for platforms without Standby/Suspend-to-RAM
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support, or it can be used in addition to Suspend-to-RAM (memory sleep)
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to provide reduced resume latency.
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State: Standby / Power-On Suspend
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ACPI State: S1
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@ -22,9 +36,6 @@ We try to put devices in a low-power state equivalent to D1, which
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also offers low power savings, but low resume latency. Not all devices
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support D1, and those that don't are left on.
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A transition from Standby to the On state should take about 1-2
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seconds.
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State: Suspend-to-RAM
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ACPI State: S3
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@ -42,9 +53,6 @@ transition back to the On state.
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For at least ACPI, STR requires some minimal boot-strapping code to
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resume the system from STR. This may be true on other platforms.
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A transition from Suspend-to-RAM to the On state should take about
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3-5 seconds.
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State: Suspend-to-disk
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ACPI State: S4
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@ -74,7 +82,3 @@ low-power state (like ACPI S4), or it may simply power down. Powering
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down offers greater savings, and allows this mechanism to work on any
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system. However, entering a real low-power state allows the user to
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trigger wake up events (e.g. pressing a key or opening a laptop lid).
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A transition from Suspend-to-Disk to the On state should take about 30
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seconds, though it's typically a bit more with the current
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implementation.
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|
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@ -28,6 +28,8 @@
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/dmi.h>
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#include <linux/delay.h>
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#ifdef CONFIG_ACPI_PROCFS_POWER
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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|
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@ -74,6 +76,8 @@ static int acpi_ac_resume(struct device *dev);
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#endif
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static SIMPLE_DEV_PM_OPS(acpi_ac_pm, NULL, acpi_ac_resume);
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static int ac_sleep_before_get_state_ms;
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static struct acpi_driver acpi_ac_driver = {
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.name = "ac",
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.class = ACPI_AC_CLASS,
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|
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@ -252,6 +256,16 @@ static void acpi_ac_notify(struct acpi_device *device, u32 event)
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case ACPI_AC_NOTIFY_STATUS:
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case ACPI_NOTIFY_BUS_CHECK:
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case ACPI_NOTIFY_DEVICE_CHECK:
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/*
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* A buggy BIOS may notify AC first and then sleep for
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* a specific time before doing actual operations in the
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* EC event handler (_Qxx). This will cause the AC state
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* reported by the ACPI event to be incorrect, so wait for a
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* specific time for the EC event handler to make progress.
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*/
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if (ac_sleep_before_get_state_ms > 0)
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msleep(ac_sleep_before_get_state_ms);
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acpi_ac_get_state(ac);
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acpi_bus_generate_proc_event(device, event, (u32) ac->state);
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acpi_bus_generate_netlink_event(device->pnp.device_class,
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@ -264,6 +278,24 @@ static void acpi_ac_notify(struct acpi_device *device, u32 event)
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return;
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}
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static int thinkpad_e530_quirk(const struct dmi_system_id *d)
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{
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ac_sleep_before_get_state_ms = 1000;
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return 0;
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}
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static struct dmi_system_id ac_dmi_table[] = {
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{
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.callback = thinkpad_e530_quirk,
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.ident = "thinkpad e530",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_NAME, "32597CG"),
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},
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},
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{},
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};
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static int acpi_ac_add(struct acpi_device *device)
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{
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int result = 0;
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|
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@ -312,6 +344,7 @@ static int acpi_ac_add(struct acpi_device *device)
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kfree(ac);
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}
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dmi_check_system(ac_dmi_table);
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return result;
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}
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|
|
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|
|
@ -223,7 +223,7 @@ static int ec_check_sci_sync(struct acpi_ec *ec, u8 state)
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static int ec_poll(struct acpi_ec *ec)
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{
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unsigned long flags;
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int repeat = 2; /* number of command restarts */
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int repeat = 5; /* number of command restarts */
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while (repeat--) {
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unsigned long delay = jiffies +
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msecs_to_jiffies(ec_delay);
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|
|
@ -241,8 +241,6 @@ static int ec_poll(struct acpi_ec *ec)
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}
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advance_transaction(ec, acpi_ec_read_status(ec));
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} while (time_before(jiffies, delay));
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if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF)
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break;
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pr_debug(PREFIX "controller reset, restart transaction\n");
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spin_lock_irqsave(&ec->lock, flags);
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start_transaction(ec);
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|
|
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|||
|
|
@ -95,9 +95,6 @@ static const struct acpi_device_id processor_device_ids[] = {
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};
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MODULE_DEVICE_TABLE(acpi, processor_device_ids);
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static SIMPLE_DEV_PM_OPS(acpi_processor_pm,
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acpi_processor_suspend, acpi_processor_resume);
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static struct acpi_driver acpi_processor_driver = {
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.name = "processor",
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.class = ACPI_PROCESSOR_CLASS,
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|
|
@ -107,7 +104,6 @@ static struct acpi_driver acpi_processor_driver = {
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.remove = acpi_processor_remove,
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.notify = acpi_processor_notify,
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},
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.drv.pm = &acpi_processor_pm,
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};
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#define INSTALL_NOTIFY_HANDLER 1
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|
|
@ -934,6 +930,8 @@ static int __init acpi_processor_init(void)
|
|||
if (result < 0)
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return result;
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||||
|
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acpi_processor_syscore_init();
|
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|
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acpi_processor_install_hotplug_notify();
|
||||
|
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acpi_thermal_cpufreq_init();
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|
|
@ -956,6 +954,8 @@ static void __exit acpi_processor_exit(void)
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|||
|
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acpi_processor_uninstall_hotplug_notify();
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acpi_processor_syscore_exit();
|
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|
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acpi_bus_unregister_driver(&acpi_processor_driver);
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|
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return;
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|
|
|
|||
|
|
@ -34,6 +34,7 @@
|
|||
#include <linux/sched.h> /* need_resched() */
|
||||
#include <linux/clockchips.h>
|
||||
#include <linux/cpuidle.h>
|
||||
#include <linux/syscore_ops.h>
|
||||
|
||||
/*
|
||||
* Include the apic definitions for x86 to have the APIC timer related defines
|
||||
|
|
@ -210,33 +211,41 @@ static void lapic_timer_state_broadcast(struct acpi_processor *pr,
|
|||
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static u32 saved_bm_rld;
|
||||
|
||||
static void acpi_idle_bm_rld_save(void)
|
||||
int acpi_processor_suspend(void)
|
||||
{
|
||||
acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &saved_bm_rld);
|
||||
return 0;
|
||||
}
|
||||
static void acpi_idle_bm_rld_restore(void)
|
||||
|
||||
void acpi_processor_resume(void)
|
||||
{
|
||||
u32 resumed_bm_rld;
|
||||
|
||||
acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &resumed_bm_rld);
|
||||
if (resumed_bm_rld == saved_bm_rld)
|
||||
return;
|
||||
|
||||
if (resumed_bm_rld != saved_bm_rld)
|
||||
acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, saved_bm_rld);
|
||||
acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, saved_bm_rld);
|
||||
}
|
||||
|
||||
int acpi_processor_suspend(struct device *dev)
|
||||
static struct syscore_ops acpi_processor_syscore_ops = {
|
||||
.suspend = acpi_processor_suspend,
|
||||
.resume = acpi_processor_resume,
|
||||
};
|
||||
|
||||
void acpi_processor_syscore_init(void)
|
||||
{
|
||||
acpi_idle_bm_rld_save();
|
||||
return 0;
|
||||
register_syscore_ops(&acpi_processor_syscore_ops);
|
||||
}
|
||||
|
||||
int acpi_processor_resume(struct device *dev)
|
||||
void acpi_processor_syscore_exit(void)
|
||||
{
|
||||
acpi_idle_bm_rld_restore();
|
||||
return 0;
|
||||
unregister_syscore_ops(&acpi_processor_syscore_ops);
|
||||
}
|
||||
#endif /* CONFIG_PM_SLEEP */
|
||||
|
||||
#if defined(CONFIG_X86)
|
||||
static void tsc_check_state(int state)
|
||||
|
|
|
|||
|
|
@ -1785,7 +1785,7 @@ static void acpi_scan_init_hotplug(acpi_handle handle, int type)
|
|||
acpi_set_pnp_ids(handle, &pnp, type);
|
||||
|
||||
if (!pnp.type.hardware_id)
|
||||
return;
|
||||
goto out;
|
||||
|
||||
/*
|
||||
* This relies on the fact that acpi_install_notify_handler() will not
|
||||
|
|
@ -1800,6 +1800,7 @@ static void acpi_scan_init_hotplug(acpi_handle handle, int type)
|
|||
}
|
||||
}
|
||||
|
||||
out:
|
||||
acpi_free_pnp_ids(&pnp);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -456,6 +456,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
|
|||
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"),
|
||||
},
|
||||
},
|
||||
{
|
||||
.callback = video_ignore_initial_backlight,
|
||||
.ident = "HP 1000 Notebook PC",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "HP 1000 Notebook PC"),
|
||||
},
|
||||
},
|
||||
{}
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -61,24 +61,24 @@ EXPORT_SYMBOL_GPL(dev_pm_get_subsys_data);
|
|||
int dev_pm_put_subsys_data(struct device *dev)
|
||||
{
|
||||
struct pm_subsys_data *psd;
|
||||
int ret = 0;
|
||||
int ret = 1;
|
||||
|
||||
spin_lock_irq(&dev->power.lock);
|
||||
|
||||
psd = dev_to_psd(dev);
|
||||
if (!psd) {
|
||||
ret = -EINVAL;
|
||||
if (!psd)
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (--psd->refcount == 0) {
|
||||
dev->power.subsys_data = NULL;
|
||||
kfree(psd);
|
||||
ret = 1;
|
||||
} else {
|
||||
psd = NULL;
|
||||
ret = 0;
|
||||
}
|
||||
|
||||
out:
|
||||
spin_unlock_irq(&dev->power.lock);
|
||||
kfree(psd);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -47,7 +47,7 @@ config CPU_FREQ_STAT_DETAILS
|
|||
|
||||
choice
|
||||
prompt "Default CPUFreq governor"
|
||||
default CPU_FREQ_DEFAULT_GOV_USERSPACE if CPU_FREQ_SA1100 || CPU_FREQ_SA1110
|
||||
default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1100_CPUFREQ || ARM_SA1110_CPUFREQ
|
||||
default CPU_FREQ_DEFAULT_GOV_PERFORMANCE
|
||||
help
|
||||
This option sets which CPUFreq governor shall be loaded at
|
||||
|
|
|
|||
|
|
@ -3,16 +3,17 @@
|
|||
#
|
||||
|
||||
config ARM_BIG_LITTLE_CPUFREQ
|
||||
tristate
|
||||
depends on ARM_CPU_TOPOLOGY
|
||||
tristate "Generic ARM big LITTLE CPUfreq driver"
|
||||
depends on ARM_CPU_TOPOLOGY && PM_OPP && HAVE_CLK
|
||||
help
|
||||
This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
|
||||
|
||||
config ARM_DT_BL_CPUFREQ
|
||||
tristate "Generic ARM big LITTLE CPUfreq driver probed via DT"
|
||||
select ARM_BIG_LITTLE_CPUFREQ
|
||||
depends on OF && HAVE_CLK
|
||||
tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
|
||||
depends on ARM_BIG_LITTLE_CPUFREQ && OF
|
||||
help
|
||||
This enables the Generic CPUfreq driver for ARM big.LITTLE platform.
|
||||
This gets frequency tables from DT.
|
||||
This enables probing via DT for Generic CPUfreq driver for ARM
|
||||
big.LITTLE platform. This gets frequency tables from DT.
|
||||
|
||||
config ARM_EXYNOS_CPUFREQ
|
||||
bool "SAMSUNG EXYNOS SoCs"
|
||||
|
|
|
|||
|
|
@ -40,11 +40,6 @@ static struct clk *clk[MAX_CLUSTERS];
|
|||
static struct cpufreq_frequency_table *freq_table[MAX_CLUSTERS];
|
||||
static atomic_t cluster_usage[MAX_CLUSTERS] = {ATOMIC_INIT(0), ATOMIC_INIT(0)};
|
||||
|
||||
static int cpu_to_cluster(int cpu)
|
||||
{
|
||||
return topology_physical_package_id(cpu);
|
||||
}
|
||||
|
||||
static unsigned int bL_cpufreq_get(unsigned int cpu)
|
||||
{
|
||||
u32 cur_cluster = cpu_to_cluster(cpu);
|
||||
|
|
@ -192,7 +187,7 @@ static int bL_cpufreq_init(struct cpufreq_policy *policy)
|
|||
|
||||
cpumask_copy(policy->cpus, topology_core_cpumask(policy->cpu));
|
||||
|
||||
dev_info(cpu_dev, "CPU %d initialized\n", policy->cpu);
|
||||
dev_info(cpu_dev, "%s: CPU %d initialized\n", __func__, policy->cpu);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -34,6 +34,11 @@ struct cpufreq_arm_bL_ops {
|
|||
int (*init_opp_table)(struct device *cpu_dev);
|
||||
};
|
||||
|
||||
static inline int cpu_to_cluster(int cpu)
|
||||
{
|
||||
return topology_physical_package_id(cpu);
|
||||
}
|
||||
|
||||
int bL_cpufreq_register(struct cpufreq_arm_bL_ops *ops);
|
||||
void bL_cpufreq_unregister(struct cpufreq_arm_bL_ops *ops);
|
||||
|
||||
|
|
|
|||
|
|
@ -66,8 +66,8 @@ static int dt_get_transition_latency(struct device *cpu_dev)
|
|||
|
||||
parent = of_find_node_by_path("/cpus");
|
||||
if (!parent) {
|
||||
pr_err("failed to find OF /cpus\n");
|
||||
return -ENOENT;
|
||||
pr_info("Failed to find OF /cpus. Use CPUFREQ_ETERNAL transition latency\n");
|
||||
return CPUFREQ_ETERNAL;
|
||||
}
|
||||
|
||||
for_each_child_of_node(parent, np) {
|
||||
|
|
@ -78,10 +78,11 @@ static int dt_get_transition_latency(struct device *cpu_dev)
|
|||
of_node_put(np);
|
||||
of_node_put(parent);
|
||||
|
||||
return 0;
|
||||
return transition_latency;
|
||||
}
|
||||
|
||||
return -ENODEV;
|
||||
pr_info("clock-latency isn't found, use CPUFREQ_ETERNAL transition latency\n");
|
||||
return CPUFREQ_ETERNAL;
|
||||
}
|
||||
|
||||
static struct cpufreq_arm_bL_ops dt_bL_ops = {
|
||||
|
|
|
|||
|
|
@ -189,12 +189,29 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
|
|||
|
||||
if (!np) {
|
||||
pr_err("failed to find cpu0 node\n");
|
||||
return -ENOENT;
|
||||
ret = -ENOENT;
|
||||
goto out_put_parent;
|
||||
}
|
||||
|
||||
cpu_dev = &pdev->dev;
|
||||
cpu_dev->of_node = np;
|
||||
|
||||
cpu_reg = devm_regulator_get(cpu_dev, "cpu0");
|
||||
if (IS_ERR(cpu_reg)) {
|
||||
/*
|
||||
* If cpu0 regulator supply node is present, but regulator is
|
||||
* not yet registered, we should try defering probe.
|
||||
*/
|
||||
if (PTR_ERR(cpu_reg) == -EPROBE_DEFER) {
|
||||
dev_err(cpu_dev, "cpu0 regulator not ready, retry\n");
|
||||
ret = -EPROBE_DEFER;
|
||||
goto out_put_node;
|
||||
}
|
||||
pr_warn("failed to get cpu0 regulator: %ld\n",
|
||||
PTR_ERR(cpu_reg));
|
||||
cpu_reg = NULL;
|
||||
}
|
||||
|
||||
cpu_clk = devm_clk_get(cpu_dev, NULL);
|
||||
if (IS_ERR(cpu_clk)) {
|
||||
ret = PTR_ERR(cpu_clk);
|
||||
|
|
@ -202,12 +219,6 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
|
|||
goto out_put_node;
|
||||
}
|
||||
|
||||
cpu_reg = devm_regulator_get(cpu_dev, "cpu0");
|
||||
if (IS_ERR(cpu_reg)) {
|
||||
pr_warn("failed to get cpu0 regulator\n");
|
||||
cpu_reg = NULL;
|
||||
}
|
||||
|
||||
ret = of_init_opp_table(cpu_dev);
|
||||
if (ret) {
|
||||
pr_err("failed to init OPP table: %d\n", ret);
|
||||
|
|
@ -264,6 +275,8 @@ out_free_table:
|
|||
opp_free_cpufreq_table(cpu_dev, &freq_table);
|
||||
out_put_node:
|
||||
of_node_put(np);
|
||||
out_put_parent:
|
||||
of_node_put(parent);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1075,14 +1075,14 @@ static int __cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif
|
|||
__func__, cpu_dev->id, cpu);
|
||||
}
|
||||
|
||||
if ((cpus == 1) && (cpufreq_driver->target))
|
||||
__cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT);
|
||||
|
||||
pr_debug("%s: removing link, cpu: %d\n", __func__, cpu);
|
||||
cpufreq_cpu_put(data);
|
||||
|
||||
/* If cpu is last user of policy, free policy */
|
||||
if (cpus == 1) {
|
||||
if (cpufreq_driver->target)
|
||||
__cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT);
|
||||
|
||||
lock_policy_rwsem_read(cpu);
|
||||
kobj = &data->kobj;
|
||||
cmp = &data->kobj_unregister;
|
||||
|
|
@ -1832,15 +1832,13 @@ static int __cpuinit cpufreq_cpu_callback(struct notifier_block *nfb,
|
|||
if (dev) {
|
||||
switch (action) {
|
||||
case CPU_ONLINE:
|
||||
case CPU_ONLINE_FROZEN:
|
||||
cpufreq_add_dev(dev, NULL);
|
||||
break;
|
||||
case CPU_DOWN_PREPARE:
|
||||
case CPU_DOWN_PREPARE_FROZEN:
|
||||
case CPU_UP_CANCELED_FROZEN:
|
||||
__cpufreq_remove_dev(dev, NULL);
|
||||
break;
|
||||
case CPU_DOWN_FAILED:
|
||||
case CPU_DOWN_FAILED_FROZEN:
|
||||
cpufreq_add_dev(dev, NULL);
|
||||
break;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -255,6 +255,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
|
|||
if (have_governor_per_policy()) {
|
||||
WARN_ON(dbs_data);
|
||||
} else if (dbs_data) {
|
||||
dbs_data->usage_count++;
|
||||
policy->governor_data = dbs_data;
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -266,6 +267,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
|
|||
}
|
||||
|
||||
dbs_data->cdata = cdata;
|
||||
dbs_data->usage_count = 1;
|
||||
rc = cdata->init(dbs_data);
|
||||
if (rc) {
|
||||
pr_err("%s: POLICY_INIT: init() failed\n", __func__);
|
||||
|
|
@ -294,7 +296,8 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
|
|||
set_sampling_rate(dbs_data, max(dbs_data->min_sampling_rate,
|
||||
latency * LATENCY_MULTIPLIER));
|
||||
|
||||
if (dbs_data->cdata->governor == GOV_CONSERVATIVE) {
|
||||
if ((cdata->governor == GOV_CONSERVATIVE) &&
|
||||
(!policy->governor->initialized)) {
|
||||
struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
|
||||
|
||||
cpufreq_register_notifier(cs_ops->notifier_block,
|
||||
|
|
@ -306,12 +309,12 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
|
|||
|
||||
return 0;
|
||||
case CPUFREQ_GOV_POLICY_EXIT:
|
||||
if ((policy->governor->initialized == 1) ||
|
||||
have_governor_per_policy()) {
|
||||
if (!--dbs_data->usage_count) {
|
||||
sysfs_remove_group(get_governor_parent_kobj(policy),
|
||||
get_sysfs_attr(dbs_data));
|
||||
|
||||
if (dbs_data->cdata->governor == GOV_CONSERVATIVE) {
|
||||
if ((dbs_data->cdata->governor == GOV_CONSERVATIVE) &&
|
||||
(policy->governor->initialized == 1)) {
|
||||
struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
|
||||
|
||||
cpufreq_unregister_notifier(cs_ops->notifier_block,
|
||||
|
|
|
|||
|
|
@ -211,6 +211,7 @@ struct common_dbs_data {
|
|||
struct dbs_data {
|
||||
struct common_dbs_data *cdata;
|
||||
unsigned int min_sampling_rate;
|
||||
int usage_count;
|
||||
void *tuners;
|
||||
|
||||
/* dbs_mutex protects dbs_enable in governor start/stop */
|
||||
|
|
|
|||
|
|
@ -547,7 +547,6 @@ static int od_init(struct dbs_data *dbs_data)
|
|||
tuners->io_is_busy = should_io_be_busy();
|
||||
|
||||
dbs_data->tuners = tuners;
|
||||
pr_info("%s: tuners %p\n", __func__, tuners);
|
||||
mutex_init(&dbs_data->mutex);
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -349,15 +349,16 @@ static int __cpuinit cpufreq_stat_cpu_callback(struct notifier_block *nfb,
|
|||
|
||||
switch (action) {
|
||||
case CPU_ONLINE:
|
||||
case CPU_ONLINE_FROZEN:
|
||||
cpufreq_update_policy(cpu);
|
||||
break;
|
||||
case CPU_DOWN_PREPARE:
|
||||
case CPU_DOWN_PREPARE_FROZEN:
|
||||
cpufreq_stats_free_sysfs(cpu);
|
||||
break;
|
||||
case CPU_DEAD:
|
||||
case CPU_DEAD_FROZEN:
|
||||
cpufreq_stats_free_table(cpu);
|
||||
break;
|
||||
case CPU_UP_CANCELED_FROZEN:
|
||||
cpufreq_stats_free_sysfs(cpu);
|
||||
cpufreq_stats_free_table(cpu);
|
||||
break;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -48,12 +48,7 @@ static inline int32_t div_fp(int32_t x, int32_t y)
|
|||
}
|
||||
|
||||
struct sample {
|
||||
ktime_t start_time;
|
||||
ktime_t end_time;
|
||||
int core_pct_busy;
|
||||
int pstate_pct_busy;
|
||||
u64 duration_us;
|
||||
u64 idletime_us;
|
||||
u64 aperf;
|
||||
u64 mperf;
|
||||
int freq;
|
||||
|
|
@ -86,13 +81,9 @@ struct cpudata {
|
|||
struct pstate_adjust_policy *pstate_policy;
|
||||
struct pstate_data pstate;
|
||||
struct _pid pid;
|
||||
struct _pid idle_pid;
|
||||
|
||||
int min_pstate_count;
|
||||
int idle_mode;
|
||||
|
||||
ktime_t prev_sample;
|
||||
u64 prev_idle_time_us;
|
||||
u64 prev_aperf;
|
||||
u64 prev_mperf;
|
||||
int sample_ptr;
|
||||
|
|
@ -124,6 +115,8 @@ struct perf_limits {
|
|||
int min_perf_pct;
|
||||
int32_t max_perf;
|
||||
int32_t min_perf;
|
||||
int max_policy_pct;
|
||||
int max_sysfs_pct;
|
||||
};
|
||||
|
||||
static struct perf_limits limits = {
|
||||
|
|
@ -132,6 +125,8 @@ static struct perf_limits limits = {
|
|||
.max_perf = int_tofp(1),
|
||||
.min_perf_pct = 0,
|
||||
.min_perf = 0,
|
||||
.max_policy_pct = 100,
|
||||
.max_sysfs_pct = 100,
|
||||
};
|
||||
|
||||
static inline void pid_reset(struct _pid *pid, int setpoint, int busy,
|
||||
|
|
@ -202,19 +197,6 @@ static inline void intel_pstate_busy_pid_reset(struct cpudata *cpu)
|
|||
0);
|
||||
}
|
||||
|
||||
static inline void intel_pstate_idle_pid_reset(struct cpudata *cpu)
|
||||
{
|
||||
pid_p_gain_set(&cpu->idle_pid, cpu->pstate_policy->p_gain_pct);
|
||||
pid_d_gain_set(&cpu->idle_pid, cpu->pstate_policy->d_gain_pct);
|
||||
pid_i_gain_set(&cpu->idle_pid, cpu->pstate_policy->i_gain_pct);
|
||||
|
||||
pid_reset(&cpu->idle_pid,
|
||||
75,
|
||||
50,
|
||||
cpu->pstate_policy->deadband,
|
||||
0);
|
||||
}
|
||||
|
||||
static inline void intel_pstate_reset_all_pid(void)
|
||||
{
|
||||
unsigned int cpu;
|
||||
|
|
@ -302,7 +284,8 @@ static ssize_t store_max_perf_pct(struct kobject *a, struct attribute *b,
|
|||
if (ret != 1)
|
||||
return -EINVAL;
|
||||
|
||||
limits.max_perf_pct = clamp_t(int, input, 0 , 100);
|
||||
limits.max_sysfs_pct = clamp_t(int, input, 0 , 100);
|
||||
limits.max_perf_pct = min(limits.max_policy_pct, limits.max_sysfs_pct);
|
||||
limits.max_perf = div_fp(int_tofp(limits.max_perf_pct), int_tofp(100));
|
||||
return count;
|
||||
}
|
||||
|
|
@ -408,9 +391,8 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
|
|||
if (pstate == cpu->pstate.current_pstate)
|
||||
return;
|
||||
|
||||
#ifndef MODULE
|
||||
trace_cpu_frequency(pstate * 100000, cpu->cpu);
|
||||
#endif
|
||||
|
||||
cpu->pstate.current_pstate = pstate;
|
||||
wrmsrl(MSR_IA32_PERF_CTL, pstate << 8);
|
||||
|
||||
|
|
@ -450,48 +432,26 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu,
|
|||
struct sample *sample)
|
||||
{
|
||||
u64 core_pct;
|
||||
sample->pstate_pct_busy = 100 - div64_u64(
|
||||
sample->idletime_us * 100,
|
||||
sample->duration_us);
|
||||
core_pct = div64_u64(sample->aperf * 100, sample->mperf);
|
||||
sample->freq = cpu->pstate.max_pstate * core_pct * 1000;
|
||||
|
||||
sample->core_pct_busy = div_s64((sample->pstate_pct_busy * core_pct),
|
||||
100);
|
||||
sample->core_pct_busy = core_pct;
|
||||
}
|
||||
|
||||
static inline void intel_pstate_sample(struct cpudata *cpu)
|
||||
{
|
||||
ktime_t now;
|
||||
u64 idle_time_us;
|
||||
u64 aperf, mperf;
|
||||
|
||||
now = ktime_get();
|
||||
idle_time_us = get_cpu_idle_time_us(cpu->cpu, NULL);
|
||||
|
||||
rdmsrl(MSR_IA32_APERF, aperf);
|
||||
rdmsrl(MSR_IA32_MPERF, mperf);
|
||||
/* for the first sample, don't actually record a sample, just
|
||||
* set the baseline */
|
||||
if (cpu->prev_idle_time_us > 0) {
|
||||
cpu->sample_ptr = (cpu->sample_ptr + 1) % SAMPLE_COUNT;
|
||||
cpu->samples[cpu->sample_ptr].start_time = cpu->prev_sample;
|
||||
cpu->samples[cpu->sample_ptr].end_time = now;
|
||||
cpu->samples[cpu->sample_ptr].duration_us =
|
||||
ktime_us_delta(now, cpu->prev_sample);
|
||||
cpu->samples[cpu->sample_ptr].idletime_us =
|
||||
idle_time_us - cpu->prev_idle_time_us;
|
||||
cpu->sample_ptr = (cpu->sample_ptr + 1) % SAMPLE_COUNT;
|
||||
cpu->samples[cpu->sample_ptr].aperf = aperf;
|
||||
cpu->samples[cpu->sample_ptr].mperf = mperf;
|
||||
cpu->samples[cpu->sample_ptr].aperf -= cpu->prev_aperf;
|
||||
cpu->samples[cpu->sample_ptr].mperf -= cpu->prev_mperf;
|
||||
|
||||
cpu->samples[cpu->sample_ptr].aperf = aperf;
|
||||
cpu->samples[cpu->sample_ptr].mperf = mperf;
|
||||
cpu->samples[cpu->sample_ptr].aperf -= cpu->prev_aperf;
|
||||
cpu->samples[cpu->sample_ptr].mperf -= cpu->prev_mperf;
|
||||
intel_pstate_calc_busy(cpu, &cpu->samples[cpu->sample_ptr]);
|
||||
|
||||
intel_pstate_calc_busy(cpu, &cpu->samples[cpu->sample_ptr]);
|
||||
}
|
||||
|
||||
cpu->prev_sample = now;
|
||||
cpu->prev_idle_time_us = idle_time_us;
|
||||
cpu->prev_aperf = aperf;
|
||||
cpu->prev_mperf = mperf;
|
||||
}
|
||||
|
|
@ -505,16 +465,6 @@ static inline void intel_pstate_set_sample_time(struct cpudata *cpu)
|
|||
mod_timer_pinned(&cpu->timer, jiffies + delay);
|
||||
}
|
||||
|
||||
static inline void intel_pstate_idle_mode(struct cpudata *cpu)
|
||||
{
|
||||
cpu->idle_mode = 1;
|
||||
}
|
||||
|
||||
static inline void intel_pstate_normal_mode(struct cpudata *cpu)
|
||||
{
|
||||
cpu->idle_mode = 0;
|
||||
}
|
||||
|
||||
static inline int intel_pstate_get_scaled_busy(struct cpudata *cpu)
|
||||
{
|
||||
int32_t busy_scaled;
|
||||
|
|
@ -547,50 +497,21 @@ static inline void intel_pstate_adjust_busy_pstate(struct cpudata *cpu)
|
|||
intel_pstate_pstate_decrease(cpu, steps);
|
||||
}
|
||||
|
||||
static inline void intel_pstate_adjust_idle_pstate(struct cpudata *cpu)
|
||||
{
|
||||
int busy_scaled;
|
||||
struct _pid *pid;
|
||||
int ctl = 0;
|
||||
int steps;
|
||||
|
||||
pid = &cpu->idle_pid;
|
||||
|
||||
busy_scaled = intel_pstate_get_scaled_busy(cpu);
|
||||
|
||||
ctl = pid_calc(pid, 100 - busy_scaled);
|
||||
|
||||
steps = abs(ctl);
|
||||
if (ctl < 0)
|
||||
intel_pstate_pstate_decrease(cpu, steps);
|
||||
else
|
||||
intel_pstate_pstate_increase(cpu, steps);
|
||||
|
||||
if (cpu->pstate.current_pstate == cpu->pstate.min_pstate)
|
||||
intel_pstate_normal_mode(cpu);
|
||||
}
|
||||
|
||||
static void intel_pstate_timer_func(unsigned long __data)
|
||||
{
|
||||
struct cpudata *cpu = (struct cpudata *) __data;
|
||||
|
||||
intel_pstate_sample(cpu);
|
||||
intel_pstate_adjust_busy_pstate(cpu);
|
||||
|
||||
if (!cpu->idle_mode)
|
||||
intel_pstate_adjust_busy_pstate(cpu);
|
||||
else
|
||||
intel_pstate_adjust_idle_pstate(cpu);
|
||||
|
||||
#if defined(XPERF_FIX)
|
||||
if (cpu->pstate.current_pstate == cpu->pstate.min_pstate) {
|
||||
cpu->min_pstate_count++;
|
||||
if (!(cpu->min_pstate_count % 5)) {
|
||||
intel_pstate_set_pstate(cpu, cpu->pstate.max_pstate);
|
||||
intel_pstate_idle_mode(cpu);
|
||||
}
|
||||
} else
|
||||
cpu->min_pstate_count = 0;
|
||||
#endif
|
||||
|
||||
intel_pstate_set_sample_time(cpu);
|
||||
}
|
||||
|
||||
|
|
@ -631,7 +552,6 @@ static int intel_pstate_init_cpu(unsigned int cpunum)
|
|||
(unsigned long)cpu;
|
||||
cpu->timer.expires = jiffies + HZ/100;
|
||||
intel_pstate_busy_pid_reset(cpu);
|
||||
intel_pstate_idle_pid_reset(cpu);
|
||||
intel_pstate_sample(cpu);
|
||||
intel_pstate_set_pstate(cpu, cpu->pstate.max_pstate);
|
||||
|
||||
|
|
@ -675,8 +595,9 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
|
|||
limits.min_perf_pct = clamp_t(int, limits.min_perf_pct, 0 , 100);
|
||||
limits.min_perf = div_fp(int_tofp(limits.min_perf_pct), int_tofp(100));
|
||||
|
||||
limits.max_perf_pct = policy->max * 100 / policy->cpuinfo.max_freq;
|
||||
limits.max_perf_pct = clamp_t(int, limits.max_perf_pct, 0 , 100);
|
||||
limits.max_policy_pct = policy->max * 100 / policy->cpuinfo.max_freq;
|
||||
limits.max_policy_pct = clamp_t(int, limits.max_policy_pct, 0 , 100);
|
||||
limits.max_perf_pct = min(limits.max_policy_pct, limits.max_sysfs_pct);
|
||||
limits.max_perf = div_fp(int_tofp(limits.max_perf_pct), int_tofp(100));
|
||||
|
||||
return 0;
|
||||
|
|
@ -788,10 +709,9 @@ static int __init intel_pstate_init(void)
|
|||
|
||||
pr_info("Intel P-state driver initializing.\n");
|
||||
|
||||
all_cpu_data = vmalloc(sizeof(void *) * num_possible_cpus());
|
||||
all_cpu_data = vzalloc(sizeof(void *) * num_possible_cpus());
|
||||
if (!all_cpu_data)
|
||||
return -ENOMEM;
|
||||
memset(all_cpu_data, 0, sizeof(void *) * num_possible_cpus());
|
||||
|
||||
rc = cpufreq_register_driver(&intel_pstate_driver);
|
||||
if (rc)
|
||||
|
|
|
|||
|
|
@ -171,10 +171,6 @@ static int kirkwood_cpufreq_probe(struct platform_device *pdev)
|
|||
priv.dev = &pdev->dev;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!res) {
|
||||
dev_err(&pdev->dev, "Cannot get memory resource\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
priv.base = devm_ioremap_resource(&pdev->dev, res);
|
||||
if (IS_ERR(priv.base))
|
||||
return PTR_ERR(priv.base);
|
||||
|
|
|
|||
|
|
@ -77,7 +77,7 @@ struct acpi_signal_fatal_info {
|
|||
/*
|
||||
* OSL Initialization and shutdown primitives
|
||||
*/
|
||||
acpi_status __initdata acpi_os_initialize(void);
|
||||
acpi_status __init acpi_os_initialize(void);
|
||||
|
||||
acpi_status acpi_os_terminate(void);
|
||||
|
||||
|
|
|
|||
|
|
@ -329,10 +329,16 @@ int acpi_processor_power_init(struct acpi_processor *pr);
|
|||
int acpi_processor_power_exit(struct acpi_processor *pr);
|
||||
int acpi_processor_cst_has_changed(struct acpi_processor *pr);
|
||||
int acpi_processor_hotplug(struct acpi_processor *pr);
|
||||
int acpi_processor_suspend(struct device *dev);
|
||||
int acpi_processor_resume(struct device *dev);
|
||||
extern struct cpuidle_driver acpi_idle_driver;
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
void acpi_processor_syscore_init(void);
|
||||
void acpi_processor_syscore_exit(void);
|
||||
#else
|
||||
static inline void acpi_processor_syscore_init(void) {}
|
||||
static inline void acpi_processor_syscore_exit(void) {}
|
||||
#endif
|
||||
|
||||
/* in processor_thermal.c */
|
||||
int acpi_processor_get_limit_info(struct acpi_processor *pr);
|
||||
extern const struct thermal_cooling_device_ops processor_cooling_ops;
|
||||
|
|
|
|||
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Ссылка в новой задаче