http://sharp2wing.iteye.com/blog/1329518
http://blog.csdn.net/sking002007/article/details/6593809
ioctl:
http://blog.chinaunix.net/uid-14753126-id-204386.html
http://wenku.baidu.com/view/89c22f727fd5360cba1adb62.html
http://www.embedu.org/Column/Column456.htm
http://blog.csdn.net/qq429205464/article/details/7822442
http://www.circlemud.org/jelson/software/fusd/docs/node30.html
http://www.groad.net/bbs/thread-1212-1-1.html
http://blog.csdn.net/qq429205464/article/details/7822442
总结：
1.工具类：
vim ssh gerrit git gitk adb gbs zypper
autoconf cmake spec patch pkg-config
gdb coredump
perf oprofile matrix bytimechart ftrace tltng?
2.suspend类：
earlysuspend runtime模型 suspend-resume流程
一个线程在running，可以suspend吗？
ioctl( /dev/alarm ) blocking，可以suspend吗？
3.os组件类:
android/tizen alarm/clock/rtc整体流程
camera app / camcorder framework / gstreamer framework / gstreamer plugin /v4l2 framework
display / graphic / X / overlay / ctexture / windowmanager
audio app / framework / gstreamer / pulseaudio / alsa
power manager
sensor framework
4.kernel类：
hrtimer wakelock irq spinlock ....
5.hardware: cpu camera audio speaker
c-states/p-states acpi
camera sensors
display mipi chip?
6.原理类：
g main loop / poll input event / dispatch
android alarm:
http://wenku.baidu.com/view/7e0b58a0f524ccbff121841c.html
http://wenku.baidu.com/view/2b543d7f27284b73f242507a.html
http://wenku.baidu.com/view/f76108e59b89680203d825ff.html
hrtimer:
http://blog.csdn.net/droidphone/article/details/8074892