Date: Fri, 16 Jan 2009 11:18:24 +1100
From: Herbert Xu <herbert@gondor.apana.org.au>
To: Ingo Molnar <mingo@elte.hu>
Cc: akpm@linux-foundation.org, tj@kernel.org, hpa@zytor.com, brgerst@gmail.com,
       ebiederm@xmission.com, cl@linux-foundation.org, rusty@rustcorp.com.au,
       travis@sgi.com, linux-kernel@vger.kernel.org, steiner@sgi.com,
       hugh@veritas.com, "David S. Miller" <davem@davemloft.net>,
       netdev@vger.kernel.org
Subject: Re: [PATCH] percpu: add optimized generic percpu accessors
Message-ID: <20090116001824.GA9221@gondor.apana.org.au>
References: <20090115183942.GA6325@elte.hu> <20090116001200.GA9137@gondor.apana.org.au> <20090116001544.GA11073@elte.hu>
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On Fri, Jan 16, 2009 at 01:15:44AM +0100, Ingo Molnar wrote:
>
> > So if you could design the API such that we have a variant of add/inc 
> > that automatically disables/enables preemption then we can optimise that 
> > away on x86.
> 
> Yeah. percpu_add(var, 1) does exactly that on x86.

Awesome! Sounds like we can finally do away with those nasty
hacks in the SNMP macros.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
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