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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-09-04 01:06:02 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-09-04 01:06:02 +0300 |
| commit | 7b01463e51f6849d0787b24d06a62efcb243dd44 (patch) | |
| tree | c084f9b5290fe4b6f279e711c0ada7be9dca8b32 /Documentation | |
| parent | a1b5fd8fa29fb2359f398ef17a706449d94de80d (diff) | |
| parent | 726fb6b4f2a82a14a906f39bdabac4863b87c01a (diff) | |
| download | linux-7b01463e51f6849d0787b24d06a62efcb243dd44.tar.xz | |
Merge branch 'pm-sleep'
* pm-sleep:
ACPI / PM: Check low power idle constraints for debug only
PM / s2idle: Rename platform operations structure
PM / s2idle: Rename ->enter_freeze to ->enter_s2idle
PM / s2idle: Rename freeze_state enum and related items
PM / s2idle: Rename PM_SUSPEND_FREEZE to PM_SUSPEND_TO_IDLE
ACPI / PM: Prefer suspend-to-idle over S3 on some systems
platform/x86: intel-hid: Wake up Dell Latitude 7275 from suspend-to-idle
PM / suspend: Define pr_fmt() in suspend.c
PM / suspend: Use mem_sleep_labels[] strings in messages
PM / sleep: Put pm_test under CONFIG_PM_SLEEP_DEBUG
PM / sleep: Check pm_wakeup_pending() in __device_suspend_noirq()
PM / core: Add error argument to dpm_show_time()
PM / core: Split dpm_suspend_noirq() and dpm_resume_noirq()
PM / s2idle: Rearrange the main suspend-to-idle loop
PM / timekeeping: Print debug messages when requested
PM / sleep: Mark suspend/hibernation start and finish
PM / sleep: Do not print debug messages by default
PM / suspend: Export pm_suspend_target_state
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-power | 12 | ||||
| -rw-r--r-- | Documentation/power/states.txt | 4 |
2 files changed, 15 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power index f523e5a3ac33..713cab1d5f12 100644 --- a/Documentation/ABI/testing/sysfs-power +++ b/Documentation/ABI/testing/sysfs-power @@ -273,3 +273,15 @@ Description: This output is useful for system wakeup diagnostics of spurious wakeup interrupts. + +What: /sys/power/pm_debug_messages +Date: July 2017 +Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Description: + The /sys/power/pm_debug_messages file controls the printing + of debug messages from the system suspend/hiberbation + infrastructure to the kernel log. + + Writing a "1" to this file enables the debug messages and + writing a "0" (default) to it disables them. Reads from + this file return the current value. diff --git a/Documentation/power/states.txt b/Documentation/power/states.txt index bc4548245a24..205e45ad7c65 100644 --- a/Documentation/power/states.txt +++ b/Documentation/power/states.txt @@ -35,7 +35,9 @@ only one way to cause the system to go into the Suspend-To-RAM state (write The default suspend mode (ie. the one to be used without writing anything into /sys/power/mem_sleep) is either "deep" (if Suspend-To-RAM is supported) or "s2idle", but it can be overridden by the value of the "mem_sleep_default" -parameter in the kernel command line. +parameter in the kernel command line. On some ACPI-based systems, depending on +the information in the FADT, the default may be "s2idle" even if Suspend-To-RAM +is supported. The properties of all of the sleep states are described below. |