Thread (30 messages) 30 messages, 8 authors, 2007-08-16

Re: [PATCH 6/24] make atomic_read() behave consistently on frv

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2007-08-11 00:55:31
Also in: linux-arch, lkml

Chris Snook [off-list ref] wrote:
cpu_relax() contains a barrier, so it should do the right thing.  For 
non-smp architectures, I'm concerned about interacting with interrupt 
handlers.  Some drivers do use atomic_* operations.
What problems with interrupt handlers? Access to int/long must
be atomic or we're in big trouble anyway.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
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