What is a kernel exported symbol? [closed]

What is a kernel exported symbol? [closed]

References

Reference NO 1

http://forum.kernelnewbies.org/read.php?12,153,6134

Reference NO 2

http://stackoverflow.com/questions/10070861/linux-kernel-exported-symbols

Reference NO 3

http://pic.dhe.ibm.com/infocenter/aix/v7r1/topic/com.ibm.aix.kernelext/doc/kernextc/kernex_binding.htm

Reference NO 4

http://www.tldp.org/HOWTO/html_single/Module-HOWTO/

Reference NO 5

http://www.xml.com/ldd/chapter/book/ch02.html

Reference NO 6

http://www.thc.org/papers/LKM_HACKING.html

Reference NO 7

http://en.opensuse.org/Kernel_Module_Packages

Reference NO 8

http://lwn.net/images/pdf/LDD3/ch02.pdf