On Tue, 02 Jun 2015 23:38:48 +0200, Mustafa Hussain said: > > /*Check if the pointer pointing to the idle class is equal to prev's > > sched_class*/ > > if(prev->sched_class == idle) > > After this condition you can just: > > printk(KERN_INFO "Prev is equal to idle_sched_class,now running the idle > > sched_class\n"); Hopefully, you didn't take Nick's advice without thinking about it.... As I type this, powertop tells me: Summary: 821.8 wakeups/second, 0.0 GPU ops/seconds, 0.0 VFS ops/sec and 18.8% CPU use That printk is going to spam your dmesg pretty hard. A better question is: If prev is about to go idle, *what do you want to do*? (Hint: newer kernels already do a bunch of stuff when a cpu/core goes idle, you probably want to make sure you're not working against something here...)
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