linuxthread介绍的文章
linuxthread
NPTL:Native Posix thread Library
http://www.ibm.com/developerworks/cn/linux/l-threading.html
http://en.wikipedia.org/wiki/Native_POSIX_Thread_Library
系统引导
http://www.ibm.com/developerworks/cn/linux/l-lpic1-v3-101-2/