do_gettimeofday(&before);if(index ==0)/* Wait for interrupt state */cpu_do_idle();elseif(index ==1) {unsignedintcpu_id = smp_processor_id(); clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &cpu_id);/* Devices must be stopped here */cpu_pm_enter();/* Add code for DDR se...
Finally, suppose you haveone active processin a system, for example a long-running CPU-intensive task. That's nearly identical to an idle system: these diagrams remain about the same, just substitute the one process for the idle task and the pictures are accurate. In that case it's still...
Belay, "Cpuidle - Do Nothing Efficiently," Proceedings of the Linux Symposium, vol. 2, June 2007.V. Pallipadi, S. Li, and A. Belay, "Cpuidle: Do nothing, efficiently," in Proc. Linux Symp., 2007, vol. 2, pp. 119-125.
cpuidle: Do Nothing, Efficiently 来自 mendeley.com 喜欢 0 阅读量: 49 作者:V Pallipadi,S Li,A Belay 摘要: Most of the focus in Linux processor power manage- ment today has been on power managing the processor while it is active: cpufreq, which changes the proces- sor frequency and/or...
Thanks for using S0ix Selftest Tool. This tool is designed for Linux OS, it can be used to do the initial debugging for the S2idle path CPU Package C-state and S0ix failures for Intel® Client platforms, it also supports the basic runtime PC10 status check. ...
The solution here is to have adynamic tickso that when the CPU is idle, the timer interrupt is eitherdeactivated or reprogrammedto happen at a point where the kernelknowsthere will be work to do (for example, a process might have a timer expiring in 5 seconds, so we must not sleep pas...