Please help "printk - problem in using it in a SMP kernel"

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hi

I am new to the kernel world and would be very glad if somebody could
help me with this problem.

I am unable to do "printk" or even a macro call like "rdtsc()"...(for
reading the time stamp counter) from within the "activate_task"
function on a kernel with smp support.But these work under the main
schedule() function on the same SMP kernel.

I was able to do all these i.e., inside "activate_task" on a kernel
without smp support.Can anybody suggest a solution as to what could be
the problem ??

somebody please help.

Thanks
Arun

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