Lines Matching refs:to

5 The kernel supports up to four system sleep states generically, although three
6 of them depend on the platform support code to implement the low-level details
9 The states are represented by strings that can be read or written to the
16 available non-hibernation sleep states from the deepest to the shallowest,
20 in /sys/power/state in addition to "mem".  If the system supports three
22 addition to "mem" and "standby".
32 It allows more energy to be saved relative to runtime idle by freezing user
37 This state can be used for platforms without Power-On Suspend/Suspend-to-RAM
38 support, or it can be used in addition to Suspend-to-RAM (memory sleep)
39 to provide reduced resume latency.  It is always supported.
47 providing a relatively low-latency transition back to a working system.  No
51 In addition to freezing user space and putting all I/O devices into low-power
54 state.  For this reason, it should allow more energy to be saved relative to
59 State:		Suspend-to-RAM
65 into the self-refresh mode to retain its contents.  All of the steps carried out
66 when entering Power-On Suspend are also carried out during transitions to STR.
68 particular, on ACPI systems the kernel passes control to the BIOS (platform
75 when entering STR, so devices must be able to handle the transition back to the
78 For at least ACPI, STR requires some minimal boot-strapping code to resume the
82 State:		Suspend-to-disk
88 state operates similarly to Suspend-to-RAM, but includes a final step
89 of writing memory contents to disk. On resume, this is read and memory
90 is restored to its pre-suspend state. 
94 setup via another operating system for it to use. Despite the
98 For suspend-to-disk, a mechanism called 'swsusp' (Swap Suspend) is used
99 to write memory contents to free swap space. swsusp has some restrictive
102 Alternatively, userspace can do most of the actual suspend to disk work,
105 Once memory state is written to disk, the system may either enter a
107 down offers greater savings, and allows this mechanism to work on any
108 system. However, entering a real low-power state allows the user to