On Tue, 2007-02-27 at 14:04 -0500, Mathieu Desnoyers wrote: > __get_nsec_offset : reads clock->cycle_last. Should be called with > xtime_lock held. (ok so far, but see below) > > change_clocksource > clock->cycle_last = now; (non atomic 64 bits update. Not protected by > any lock ?) -> this would race with __get_nsec_offset ?
Minor nit (it could probably use a comment fixup): its only called from update_wall_time, which holds xtime_lock. > update_wall_time > Called from timer interrupt. Holds xtime_lock and has a priority higher > than other interrupts. Other clock->cycle_last protected by > write_seqlock_irqsave. -john - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
