On 2018-07-18 20:19:15 [+0530], Pintu Kumar wrote: > Hi All, Hi, > I have a question about PREEMPT_RT patch for 3.10 kernel. > I am trying to port this rt patch: 0224-printk-rt-aware.patch.patch > (see the patch below), in non-rt kernel. > I could able to successfully apply this patch after replacing: > migrate_enable/disable with preempt_enable/disable. > Things were working fine so far. Why? > Then, I noticed that "printk" from interrupt context is not appearing > on console (minicom), if console shell is active. > However, it appears on the dmesg output. > > So, I am wondering, what could be the cause of this patch for this > behavior in non-rt kernel? > Is this the expected behavior, even on PREEMPT_RT kernel? I *think* it is but there are hardly any prints from atomic context for anyone to notice. And the next print from non-atomic context should flush it out. > Is there a way we can fix this issue on non-rt kernel? I would guess that a wakeup to klogd would fix it. > Please help us with your suggestions. > > Thanks, > Pintu Sebastian -- 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
