On Tue, 8 Oct 2013, Pfaff Thomas wrote: > > > On Fri, 4 Oct 2013, Sebastian Andrzej Siewior wrote: > > > * Thomas Pfaff | 2013-09-19 11:02:57 [+0200]: > > > > >If an irq is requested during device open, for example by opening a serial > > >device, then request_irq is called in the context of the opening process. > > >If the process lacks off CAP_SYS_NICE the irq thread is running with SCHED_OTHER > > >priority. > > > > > >The problem exists in other real time patches as well, 3.10 seems to be ok. > > > > Hmmm. I see the same check in v3.10 compared to v3.6 which so I *think* > > v3.10 has the same problem. > > However this does not look to be -RT specific, you should see the same > > problem in mainline, too. Could you please verify whether this does > > affect v3.10? And if it does, we should try to fix up it upstream, too > > > > I did a quick check with 3.10.14-rt9 and it is not affected, because > sched_setscheduler is called in the context of the irq thread as the mainline > kernel does, but the 3.6 rt patch moved this into __setup_irq. Sorry, should have been 3.4 rt patch. Thomas -- 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
