On Wednesday, April 13, 2011, Mike Frysinger wrote: > when we suspend/resume Blackfin SMP systems, we notice that the > freezer code runs on multiple cores. this is of course what you want > -- freeze processes in parallel. however, the code only uses non-smp > based barriers which causes us problems ... our cores need software > support to keep caches in sync, so our smp barriers do just that. but > the non-smp barriers do not, and so the frozen/thawed processes > randomly get stuck in the wrong task state. > > thinking about it, shouldnt the freezer code be using smp barriers ? Yes, it should, but rmb() and wmb() are supposed to be SMP barriers. Or do you mean something different? Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
