On Thu, Mar 10, 2011 at 10:25 PM, Mulyadi Santosa <mulyadi.santosa@xxxxxxxxx> wrote: > Hi... > > On Thu, Mar 10, 2011 at 22:05, lalit mohan tripathi > <lalit.tripathi@xxxxxxxxx> wrote: >> I've a general question: In Multiprocessor (Multi-Core) (SMP) >> environment how does fork system call (do_fork() related code) >> maintain the synchronization in case the threads of a process are >> running on different processors? E.g. it can happen that the fork() >> is called by cpu-0 thread and other thread of same process is >> executing on cpu-1. > > well, AFAIK, the newly born child, at least when they are just about > to kick in into the run queue (in any CPU), is actually still inside > the parent's code path. Or in simpler word, they are still bound in > the same core/processor they are created. Therefore, there's no > problem regarding task struct duplication etc > > is that what you mean? > > -- > regards, > > Mulyadi Santosa > Freelance Linux trainer and consultant > > blog: the-hydra.blogspot.com > training: mulyaditraining.blogspot.com > Ok, I got the answer: Only the thread calling fork() gets copied. Thanks. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
