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%SECTION0{name=LddUserKernelCommunication}% Userspace kernel communication * =procfs= (deprecated, don't use anymore) * sysfs (nice, complex, not for debugging) * [[http://lwn.net/Articles/115405/][debugfs]] (simple and easy for debugging) * [[http://lwn.net/Articles/174660/][relayfs]] (for high speed kernel-userspace transfer) * [[http://lwn.net/Articles/131802/][netlink]] (socket oriented, asynchronous, used for routing, firewall, etc. easy to extend) * [[LddIoctl][ioctl]] (deprecated, messy, don't use)
5.7.7. Kernel library functions
1. Denx Training Topics
5.7.9. Porting of Linux
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