On Thu, Dec 20, 2018 at 12:56:25PM -0800, Jeff Kirsher wrote: > This change is based off of the work and suggestion of Jan Jablonsky > <jan.jablon...@thalesgroup.com>. > > The Watchdog workqueue in igb driver is scheduled every 2s for each > network interface. That includes updating a statistics protected by > spinlock. Function igb_update_stats in this case will be protected > against preemption. According to number of a statistics registers > (cca 60), processing this function might cause additional cpu load > on CPU0. > > In case of statistics spinlock may be replaced with mutex, which > reduce latency on CPU0. > > CC: Bernhard Kaindl <bernhard.kai...@thalesgroup.com> > CC: Jan Jablonsky <jan.jablon...@thalesgroup.com> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com> > Tested-by: Aaron Brown <aaron.f.br...@intel.com> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
Hi, I'm hitting following issue with this commit: https://lists.01.org/pipermail/lkp/2018-September/009139.html
