Messages in this thread | | | Date | Tue, 16 Jun 1998 01:40:57 -0400 | From | "Theodore Y. Ts'o" <> | Subject | Re: Polling ? :-( |
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Date: Tue, 16 Jun 1998 10:23:22 +0530 From: sameer <sameer@multitech.co.in>
Currently I 'm writing a driver for a multi port serial interface card on 2.0.0 as a module. The card interrupts only when data is to be received or on detection of any changes in modem signals but not when data needs to be transmitted :-( This would make it necessary for a polling routine to be written which would tx data to the ports which have data pending in their trasmit buffers....
What would be the best way to hook up such a polling routine?
The easist way is to simply use the add_timer/del_timer interface. See the second half of /usr/src/include/linux/timer.h for more details.
You'll have to reinstall add_timer each time the timer runs, but this will allow you to figure out when the next time your timer routine should run, and adjust the time in the timer_struct accordingly.
Hope this helps.
- Ted
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