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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-21 13:15:51 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-21 13:15:51 -0400 |
commit | c7c66c0cb0c77b1a8edf09bca57d922312d58030 (patch) | |
tree | 77277103c5f16aa4dee64978a060933d92e14776 /Documentation/ABI | |
parent | 9f3938346a5c1fa504647670edb5fea5756cfb00 (diff) | |
parent | 98e8bdafeb4728a6af7bbcbcc3984967d1cf2bc1 (diff) |
Merge tag 'pm-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates for 3.4 from Rafael Wysocki:
"Assorted extensions and fixes including:
* Introduction of early/late suspend/hibernation device callbacks.
* Generic PM domains extensions and fixes.
* devfreq updates from Axel Lin and MyungJoo Ham.
* Device PM QoS updates.
* Fixes of concurrency problems with wakeup sources.
* System suspend and hibernation fixes."
* tag 'pm-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (43 commits)
PM / Domains: Check domain status during hibernation restore of devices
PM / devfreq: add relation of recommended frequency.
PM / shmobile: Make MTU2 driver use pm_genpd_dev_always_on()
PM / shmobile: Make CMT driver use pm_genpd_dev_always_on()
PM / shmobile: Make TMU driver use pm_genpd_dev_always_on()
PM / Domains: Introduce "always on" device flag
PM / Domains: Fix hibernation restore of devices, v2
PM / Domains: Fix handling of wakeup devices during system resume
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
PM / Sleep: JBD and JBD2 missing set_freezable()
PM / Domains: Fix include for PM_GENERIC_DOMAINS=n case
PM / Freezer: Remove references to TIF_FREEZE in comments
PM / Sleep: Add more wakeup source initialization routines
PM / Hibernate: Enable usermodehelpers in hibernate() error path
PM / Sleep: Make __pm_stay_awake() delete wakeup source timers
PM / Sleep: Fix race conditions related to wakeup source timer function
PM / Sleep: Fix possible infinite loop during wakeup source destruction
PM / Hibernate: print physical addresses consistently with other parts of kernel
...
Diffstat (limited to 'Documentation/ABI')
-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: | |||
165 | 165 | ||
166 | Not all drivers support this attribute. If it isn't supported, | 166 | Not all drivers support this attribute. If it isn't supported, |
167 | attempts to read or write it will yield I/O errors. | 167 | attempts to read or write it will yield I/O errors. |
168 | |||
169 | What: /sys/devices/.../power/pm_qos_latency_us | ||
170 | Date: March 2012 | ||
171 | Contact: Rafael J. Wysocki <rjw@sisk.pl> | ||
172 | Description: | ||
173 | The /sys/devices/.../power/pm_qos_resume_latency_us attribute | ||
174 | contains the PM QoS resume latency limit for the given device, | ||
175 | which is the maximum allowed time it can take to resume the | ||
176 | device, after it has been suspended at run time, from a resume | ||
177 | request to the moment the device will be ready to process I/O, | ||
178 | in microseconds. If it is equal to 0, however, this means that | ||
179 | the PM QoS resume latency may be arbitrary. | ||
180 | |||
181 | Not all drivers support this attribute. If it isn't supported, | ||
182 | it is not present. | ||
183 | |||
184 | This attribute has no effect on system-wide suspend/resume and | ||
185 | hibernation. | ||