Hello,
We will need 64 bit counters of the slow context switches,
one counter for each new created task (e.g. u64 ctxt_switch_counts;)
We will only need them during the lifetime of the tasks.
To increment by +1 the task's 64 bit counter (it's fast)
each one slow context switch.
*kernel/sched.c:
void context_switch(...) { ... } # incr. +1 here.
void wake_up_new_task(...) { ... } # ->ctxt_switch_counts = 0ULL;
*include/linux/sched.h:
struct task_struct { ... } # add 64-bit (u64 ctxt_switch_counts;) here.
Please, do it and we can do it better than CFS fair scheduler.
I will explain your later why of it.
O:)
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