• Rafael J. Wysocki's avatar
    PM / sleep: Introduce command line argument for sleep state enumeration · 0399d4db
    Rafael J. Wysocki authored
    On some systems the platform doesn't support neither
    PM_SUSPEND_MEM nor PM_SUSPEND_STANDBY, so PM_SUSPEND_FREEZE is the
    only available system sleep state.  However, some user space frameworks
    only use the "mem" and (sometimes) "standby" sleep state labels, so
    the users of those systems need to modify user space in order to be
    able to use system suspend at all and that is not always possible.
    
    For this reason, add a new kernel command line argument,
    relative_sleep_states, allowing the users of those systems to change
    the way in which the kernel assigns labels to system sleep states.
    Namely, for relative_sleep_states=1, the "mem", "standby" and "freeze"
    labels will enumerate the available system sleem states from the
    deepest to the shallowest, respectively, so that "mem" is always
    present in /sys/power/state and the other state strings may or may
    not be presend depending on what is supported by the platform.
    
    Update system sleep states documentation to reflect this change.
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    0399d4db
main.c 15.3 KB