From: Mikulas Patocka <mpatocka@xxxxxxxxxx> Date: Fri, 20 Jun 2008 16:34:23 -0400 (EDT) > And what if network softirq happened here? How much stack does it consume? > > The whole overflowed stack trace has 75 functions, I was able to get rid > of 9 by avoiding bio_endio recursion and 10 by turning simple functions > into inlines. --- so is it enough or not enough for possible networking > calls? It should be OK, because the minimum stack of a (75 - 19) depth call chain is under 11K and within safe limits I believe. > Maybe a good thing would be to add a check for stack size to __do_softirq > and handing the softirq to ksoftirqd if there's not enough space. I'd rather it spit out a WARN_ON() message and a backtrace. Otherwise it will be considered a feature and people won't fix these deep call chains. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
