Hi Ingo, On Mon, Mar 16, 2015 at 04:01:02PM +0100, Ingo Molnar wrote: >> + >> + /* >> + * If cannot preempt any rq, fallback to pick any >> + * online cpu. > >s/If cannot/If we cannot >s/fallback/fall back
Will do. > >> + */ >> + fallback = true; >> + cpu = cpumask_any_and(cpu_active_mask, >> + tsk_cpus_allowed(p)); > >shouldn't be on separate lines - but this is also a sign that the guts Otherwise there is a "WARNING: line over 80 characters". >of this new code should be in a helper function, not inside several >layers of branches. Do you mean the whole patch should be in a helper function? > >> + if (cpu >= nr_cpu_ids) { >> + if (dl_bandwidth_enabled()) { >> + /* >> + * Fail to find any suitable cpu. >> + * The task will never come back! >> + */ >> + WARN_ON(1); > >Can this condition happen to users with a non-buggy kernel? What do you prefer? ;-) Regards, Wanpeng Li -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/