"Expensive timeout(9) function..."

[Yar Tikhiy]

Hello,

I'm getting the following DIAGNOSTIC messages on my -CURRENT box:

  Expensive timeout(9) function: 0xc02677e0(0) 0.006095064 s

(it's uma_timeout(), which triggers the warning once per boot)

  Expensive timeout(9) function: 0xc0141610(0xc0dfcc00) 0.006581587 s
  Expensive timeout(9) function: 0xc0141610(0xc0dfcc00) 0.008510173 s

(and this one is fxp_tick(); it triggers the warning from time to time)

Are those warnings harmless?

As far as my understanding of the issue reaches, a timeout function
is called under protection of the Giant mutex unless it's marked
as MP-safe, and that's the reason to spend as little time as possible
in it.  Right?

-- 
Yar