On 13-03-26 12:31 PM, Mathieu Poirier wrote: > On 13-03-26 11:27 AM, Viresh Kumar wrote: >> On 26 March 2013 22:52, Dietmar Eggemann <dietmar.eggem...@arm.com> wrote: >>> Would it be possible for you to merge in 'idlenocb.2013.03.18b' (based >>> on v3.9-rc2) (or newer) from >>> 'git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git' >>> into your big.LITTLE MP tree? I talked to Paul McKenney about this and >>> he would like to have this additional test coverage. >> >> 13.03 release is already over and this would be available after that. >> >>> (2) On top of the merge, we must assure that the TC2 default config file >>> gets changed: >>> >>> >>> Change the config file: >>> * Set CONFIG_RCU_FAST_NO_HZ=y >>> * Set CONFIG_RCU_NOCB_CPU=y >>> * Set CONFIG_RCU_NOCB_CPU_ALL=y >> >> @Mathieu/Nicolas: you see any issues with these? I know we have been >> working on some issues with/without them for some time. >> > > The CONFIG_RCU_FAST_NO_HZ option is known to increase the likely hood > of hitting a tight race condition in the cpu hotplug and smpboot thread > area. The condition doesn't disappear when the option is off but it > decreases the failure rate. > > Mathieu. >
What we could do is take it in 'next' and see how it behaves. After all the worst that can happen is to still observe the issue... _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
