2013/1/25 Vincent Guittot <vincent.guit...@linaro.org>: > > Le 25 janv. 2013 13:00, "Frederic Weisbecker" <fweis...@gmail.com> a écrit : > > >> >> 2013/1/25 Vincent Guittot <vincent.guit...@linaro.org>: >> > This sequence is not the right one >> > >> >> I'm going to look for the saved trace to check the sequence above >> > >> > I haven't been able to reproduce the bug that this patch was supposed to >> > solved. The patch 2 and 3 seem enough to fix the nr_busy_cpus field. I >> > will >> > continue to try to reproduce it but it seems that it was a side effect >> > of >> > the 2 others fixes of the series >> >> Ok. I just checked again as well and I can't find a scenario where >> this can happen. If you find it out or trigger the bug again, don't >> hesitate to resend this patch. > > Ok. I'm going to update the patch serie without this patch
Actually your second patch may cause this, as it clears the NOHZ_IDLE flag on CPUs that are idle on boot and which could stay that way for a while. And your second patch is spotting something serious. I'll reply on it after more thoughts. _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
