hi nidhi,
(from LKD 2nd edition)
(from LKD 2nd edition)
One of the benefits of tasklets is that they are serialized with respect to themselves: The same tasklet will not run concurrently, even on two different processors. This means you do not have to worry about intratasklet[8] concurrency issues. Intertasklet concurrency (that is, when two different tasklets share the same data) requires proper locking.
thanks,
mitul modi
On Wed, Sep 17, 2008 at 4:54 PM, nidhi mittal <nidhimittal19@xxxxxxxxx> wrote:
it was written that
"This is because execution of deferrable functions is always serialized on a CPU that is, a deferrable function cannot be interrupted by another deferrable function. Therefore, no synchronization primitive is ever required.
that is
deferrable functions are always serialized on uniprocessor not interrupted by another deferrable function "
my ques is
i accept while executing softirq or tasklet process cant sleep ..so can not be preempted in that sense.
and it wont be interrupted by another deferrable function its okay
but if time slice finishes then one deferrable function's execution if preeemted ....
then another deferrable function will execute and access the comon data structure isnt it ???
m i wrong smwhere in my interpretation pl clarify ...
--
Thanks & Regards
Nidhi
