low_delay_interrupts?

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Hi all,
 timer generates interruptes at HZ value  we set this 
value in  timer0 .
this calculates to 1ms at which jiffies are incerment
in interrupt handler routine for timer interrupt!
if one have to generate same periodic interrupts at
extremly small delays like say 20 micro second ?
is there any way to do it in timer0 interrupt only we
can adjust the counter to generate at say 20 micro
second!or like that?
what are the ways to do have extremly low delay
interrupts!
thanks !

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