On Fri, 21 Oct 2011, Srivatsa S. Bhat wrote: > Don't allow the freezer subsystem to race with CPU hotplug to ensure that > during the entire duration for which the CPU hotplug notifications are run, > the state of the system (with respect to the tasks being frozen or not) > remains constant. > > This patch introduces four notifications in the freezer subsystem, > PM_FREEZE_PREPARE, PM_POST_FREEZE, PM_THAW_PREPARE and PM_POST_THAW. > These help in making other subsystems aware of the freezer's activity. > The CPU hotplug infrastructure hooks on to these notifications and > synchronizes with the freezer. It seems pointless to send out PM_POST_FREEZE and PM_THAW_PREPARE notifications. No task will be running to be affected by them. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
