atomic_t and atomic_inc

From: Al Niessner (Al.Niessner_at_jpl.nasa.gov)
Date: 04/22/04

  • Next message: Alexander Gran: "Re: 2.6.6-rc2-mm1" 
    To: linux-kernel@vger.kernel.org
Date:	Thu, 22 Apr 2004 11:58:40 -0700

    First, I am not subscribed to this list so please reply to me directly
    if you wish a timely response to any questions. In any case, I will lurk
    in the archives for responses.

    I am using atomic_t to count interrupts from some piece of hardware.
    These interrupts come at a fairly high rate -- 10 KHz and higher. The
    problem is, will I get increment problem at the limit of atomic_t or
    will it wrap around without error? I read the docs (man pages, on-line
    api docs, this list and other stuff) and none of them talk about the
    behavior of atomic_t at the boundaries. Furthermore, am I guaranteed of
    any boundary behavior across platforms?

    Thank you in advance for any and all help. 

    -- 
Al Niessner <Al.Niessner@jpl.nasa.gov>
Jet Propulsion Laboratory
All opinions stated above are mine and do not necessarily reflect 
those of JPL or NASA.
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  • Next message: Alexander Gran: "Re: 2.6.6-rc2-mm1"