Hello Ayan, On Tue, Mar 17, 2015 at 11:44 AM, AYAN KUMAR HALDER <[email protected]> wrote: > Hi, > > I am porting kernel (3.14.22) on a custom ARM(Cortex A9 x 3) based platform. > I was able to get it working on uniprocessor mode. > Now I wish to get the SMP mode working as mine is Cortex A9 x3 platform. > However, I see that the booting gets stuck after the following log:- > > CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 > Setting up static identity map for 0x1f9690 - 0x1f96c4 > CPU1: Booted secondary processor > > When I debugged it further, I found that it waits endlessly in a > arch_spin_lock() :- > > while (lockval.tickets.next != lockval.tickets.owner) { // loops here > wfe(); > lockval.tickets.owner = ACCESS_ONCE(lock->tickets.owner); > } > > It would be great if someone can give me pointers about how to proceed ahead. Now that its pretty sure you are hitting a deadlock. Next step is to understand the code and find out what is causing it.
Thanks, Arun > > Regards, > Ayan kumar Halder > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
