linux-scheduler-modifier's Introduction
----readme file for ques1---- ->Here first we go to include/linux then in sched.h in sched_entity we define struct { u64 delay; u64 print_exec_start; } ->then in kernel/sched/core.c on line 300: we add p-> se.delay=0; p->se.print_exec_start=0; ->then in kernel/sched/fair.c we add curr->runtime+=curr->delay; ->after this we just add our system call in systable and our system call code is SYSCALL_DEFINE1(mohd,int,pid){ struct pid *id; struct task_struct *st; id = find_get_pid(pid); st = pid_task(id, PIDTYPE_PID); st->se.time=(5000000); printk("Delayed by 5ms \n"); printk("time takn to complete: %lld",st->se.sum_exec_runtime); return 0; }
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