a doubt on scheduler

[prajul phalgunan]

i  am a beginner to linux kernel and trying to learn especially how
linux schedules processes
i have  read some books on linux kernel but left with the some doubts.

1.how does the scheduler that it schedules all task within the
sysctl_sched_latency
2.when a process wakes up what actually is done in the place_entity function
3.when a process wakes up why the vruntime is adjusted by subtracting
from sched_latency,cant it lead to processes in the run queue with
large difference in the vruntime value

Expecting some one to respond...please..
thanks in advance..
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