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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-07-18 10:49:30 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-07-18 10:49:30 +0300
commit918e162e6a71e924a343b41f71789ad14e1e3229 (patch)
treefe26a3ee0f78ac652fed532c4986af7469c71859 /Documentation
parent8da04e05cdfc715d414a1c5f8318c03030eb68fb (diff)
parentc4dcc8a162784c1f827c7f6d8409598f19708fe6 (diff)
downloadlinux-918e162e6a71e924a343b41f71789ad14e1e3229.tar.xz
Merge branch 'pm-cpufreq'
* pm-cpufreq: cpufreq: Make cpufreq_generic_init() return void cpufreq: imx-cpufreq-dt: Add i.MX8MN support cpufreq: Add QoS requests for userspace constraints cpufreq: intel_pstate: Reuse refresh_frequency_limits() cpufreq: Register notifiers with the PM QoS framework PM / QoS: Add support for MIN/MAX frequency constraints PM / QOS: Pass request type to dev_pm_qos_read_value() PM / QOS: Rename __dev_pm_qos_read_value() and dev_pm_qos_raw_read_value() PM / QOS: Pass request type to dev_pm_qos_{add|remove}_notifier()
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/power/pm_qos_interface.txt12
1 files changed, 7 insertions, 5 deletions
diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt
index 19c5f7b1a7ba..cfcb1df39799 100644
--- a/Documentation/power/pm_qos_interface.txt
+++ b/Documentation/power/pm_qos_interface.txt
@@ -123,7 +123,7 @@ Will remove the element. After removal it will update the aggregate target and
call the notification trees if the target was changed as a result of removing
the request.
-s32 dev_pm_qos_read_value(device):
+s32 dev_pm_qos_read_value(device, type):
Returns the aggregated value for a given device's constraints list.
enum pm_qos_flags_status dev_pm_qos_flags(device, mask)
@@ -164,12 +164,14 @@ directory.
Notification mechanisms:
The per-device PM QoS framework has a per-device notification tree.
-int dev_pm_qos_add_notifier(device, notifier):
-Adds a notification callback function for the device.
+int dev_pm_qos_add_notifier(device, notifier, type):
+Adds a notification callback function for the device for a particular request
+type.
+
The callback is called when the aggregated value of the device constraints list
-is changed (for resume latency device PM QoS only).
+is changed.
-int dev_pm_qos_remove_notifier(device, notifier):
+int dev_pm_qos_remove_notifier(device, notifier, type):
Removes the notification callback function for the device.