On Fri, 1 Dec 2017 13:57:50 +0000 Johannes Weiner <hannes@xxxxxxxxxxx> wrote: > The memcg cpu_dead callback can be called early during startup > (CONFIG_DEBUG_HOTPLUG_CPU0) with preemption enabled, which triggers a > warning in its __this_cpu_xchg() calls. But CPU locality is always > guaranteed, which is the only thing we really care about here. > > Using the preemption-safe this_cpu_xchg() addresses this problem. > > Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> > --- > > Andrew, can you please merge this fixlet into the original patch? Did. I see that lkp-robot identified a performance regression and pointed the finger at this patch? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
