Hi, I am relatively new to RT. I have a query w.r.t might_sleep. I might be asking on the wrong mailing list(perhaps I should try kernel newbies). AFAIU, might_sleep() in a function means, the function can sleep. If this function is called in atomic/interrupt context the kernel throws out BUG: sleeping function called from invalid context at kernel/rtmu tex.c. Am I correct so far? I was browsing the source, in rtmutex.c, in function rt_spin_lock(), which calls rt_spin_lock_fastlock, there's a might_sleep() that's getting called. I understand this is possible as spin_locks in PREEMPT_RT are mutexes. But there could be a condition where this could be called from some code holding spin_lock right? for example __might_sleep rt_spin_lock some_fucnction() --> which has a local_irq_save(flags)/local_irq_irqrestore(flags). This could be a potential bug right? - Doug -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
