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Hi Folks, Here is a simple patch for power event
notification to user-space applications. Basically, what it does is notify the
user-space applications that the system is going to a low power state
(Suspend-to-RAM and Suspend-to-Disk) and resume from that state. This is useful
for the user-space applications to do some significant action when the system
goes to the low power state (like saving an unsaved file). The user-space
objects can form a netlink socket and listen to these events. It is done through
a kobject-netlink socket. For this I have used the kobject_uevent system call,
posting the notification to user space with standby, hibernate and resume in
the action parameter of the
kobject_uevent call (mapped to KOBJ_S3, KOBJ_S4 and KOBJ_RESUME enums). Appreciate
your comments on the patch. Thanks, Sankara Narayanan V. |
Attachment:
pwr-evnt-notfn.patch
Description: pwr-evnt-notfn.patch
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