xiaojsj111的专栏

1 调试方法linux下的usb ehci控制器的调试方法：mount -t debugfs debugfs /sys/kernel/debugcat /sys/kernel/debug/usb/devicescat /sys/kernel/debug/usb/usbmon/$(bus_num)uehci控制器下的async、periodic、registers等字段的解析

Deferrable timers[Posted March 28, 2007 by corbet] The dynamic tick code featured in the upcoming 2.6.21 kernel seeks to avoid processor wakeups by turning off the period timer tick when nothing is hap