<div dir="ltr">Updated:<div>I check the <span style="background-color:transparent">frequency of the CPU by `cat /proc/cpuinfo`.</span></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jan 19, 2022 at 9:23 AM 孙世龙 sunshilong <<a href="mailto:sunshilong369@gmail.com">sunshilong369@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi, list<br>I am using Linux 5.4.78 with PREEMPT_RT patch.<br>Hardware name: UNO-2372G-J021AE.<br><br>It's strange that the frequency of the CPU is not constant(i.e. <br>not fixed at a specific frequency) if I both disable CONFIG_CPU_FREQ <br>and CONFIG_CPU_IDLE<br>whereas<br>the frequency of the CPU is constant if I only disable CONFIG_CPU_FREQ<br>(leave CONFIG_CPU_IDLE enabled).<br><br>Could somebody please shed some light on this matter? <br></div>
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