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  • Rafael J. Wysocki's avatar
    Add suspend-related notifications for CPU hotplug · 8bb78442
    Rafael J. Wysocki authored
    
    
    Since nonboot CPUs are now disabled after tasks and devices have been
    frozen and the CPU hotplug infrastructure is used for this purpose, we need
    special CPU hotplug notifications that will help the CPU-hotplug-aware
    subsystems distinguish normal CPU hotplug events from CPU hotplug events
    related to a system-wide suspend or resume operation in progress.  This
    patch introduces such notifications and causes them to be used during
    suspend and resume transitions.  It also changes all of the
    CPU-hotplug-aware subsystems to take these notifications into consideration
    (for now they are handled in the same way as the corresponding "normal"
    ones).
    
    [oleg@tv-sign.ru: cleanups]
    Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
    Cc: Gautham R Shenoy <ego@in.ibm.com>
    Cc: Pavel Machek <pavel@ucw.cz>
    Signed-off-by: default avatarOleg Nesterov <oleg@tv-sign.ru>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    8bb78442