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List:       linux-newbie
Subject:    bottom half question
From:       ratheesh kannoth <ratheesh.ksz () gmail ! com>
Date:       2012-12-03 12:38:57
Message-ID: CAGZFCEH__DQfr7-q-5F6JsffXwPHpaE5+235pjn=ib5XMH9M6g () mail ! gmail ! com
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In uni processor system ( 2.6 kernel )

An  interrupt happened and ISR routine is  serviced , then   bottom
half scheduled and while the bottom half is running

1) Suppose  same interrupt happened  again - > then  (the previous )
bottom half is preempted  and ISR is serviced for new interrupt. After
ISR , same bottom half will be run again ? or the new  one ?

2) if it is a new bottom half being run ,( since bottom half is in
interrupt context )  where it can store register info of previous
interrupt ?


3) Suppose a lot of interrupts happen in a short period of time , how
and when bottom half for each interrupt  gets scheduled ?


-Ratheesh
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