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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2012-03-16 21:49:24 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-03-16 21:49:24 +0100 |
| commit | 59fb53ea75eef4aa029cf31c88cdacec2f7b794b (patch) | |
| tree | fb2ee7f8e99a72fe858e76ba7f2dbbc0390f3128 /Documentation | |
| parent | ed819e3b964bba8bfae8e65d4d55a3f345f8da16 (diff) | |
| parent | efe6a8ad7fc55b350ce968cae4c757d35e986285 (diff) | |
Merge branch 'pm-qos'
* pm-qos:
sh_mmcif / PM: Use PM QoS latency constraint
tmio_mmc / PM: Use PM QoS latency constraint
PM / QoS: Make it possible to expose PM QoS latency constraints
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-power | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power index 8ffbc25376a0..840f7d64d483 100644 --- a/Documentation/ABI/testing/sysfs-devices-power +++ b/Documentation/ABI/testing/sysfs-devices-power @@ -165,3 +165,21 @@ Description: Not all drivers support this attribute. If it isn't supported, attempts to read or write it will yield I/O errors. + +What: /sys/devices/.../power/pm_qos_latency_us +Date: March 2012 +Contact: Rafael J. Wysocki <rjw@sisk.pl> +Description: + The /sys/devices/.../power/pm_qos_resume_latency_us attribute + contains the PM QoS resume latency limit for the given device, + which is the maximum allowed time it can take to resume the + device, after it has been suspended at run time, from a resume + request to the moment the device will be ready to process I/O, + in microseconds. If it is equal to 0, however, this means that + the PM QoS resume latency may be arbitrary. + + Not all drivers support this attribute. If it isn't supported, + it is not present. + + This attribute has no effect on system-wide suspend/resume and + hibernation. |