Re: [PATCH] sched: add sanity check in partition_sched_domains()

[Li Zefan <lizf@cn.fujitsu.com>]

> a small detail, i changed this:
> 
>> +		BUG_ON(dattr_new);
> 
> to WARN_ON_ONCE().
> 
> If there's a rare setup-time memory leak we dont want to crash the box 
> via a BUG_ON(), as that only results in unhappy users. We want a 
> WARN_ON_ONCE() so that we get nice bugreports and kerneloops.org 
> coverage as well instead.
> 
> We use BUG_ON() in new code only in the rarest of circumstances: if we 
> absolutely want to bring down the box right there - because there's a 
> serious risk of data corruption, security breach, etc.
> 

I see the point, thx for the explanation. :)