Re: Another version of stacker.c (URL attached) - Locking.

From: Greg KH (gregat_private)
Date: Tue Jul 23 2002 - 07:14:52 PDT

  • Next message: David Wheeler: "Got suggestions to reduce the locks in stacker.c?"

    On Tue, Jul 23, 2002 at 03:02:44PM +1000, Lachlan McIlroy wrote:
    > What is the cost of using atomic counters?  It's only a few
    > instructions, right?.  It must be less overhead than using
    > spinlocks.
    
    No, I think you end up flushing all CPUs when you make one, it's a big
    hit.  And spinlocks are created out of atomic counters :)
    
    thanks,
    
    greg k-h
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