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From: Al Niessner <Al.Niessner@jpl.nasa.gov>
To: linux-kernel@vger.kernel.org
Subject: atomic_t and atomic_inc
Date: Thu, 22 Apr 2004 11:58:40 -0700	[thread overview]
Message-ID: <1082660320.28900.193.camel@morte.jpl.nasa.gov> (raw)


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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             reply	other threads:[~2004-04-22 18:58 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-04-22 18:58 Al Niessner [this message]
2004-04-22 20:50 ` Richard B. Johnson
2004-05-15 22:54   ` Jamie Lokier

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