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Re: [PATCH] atomic: add atomic_inc_not_zero_hint()

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From: Andi Kleen
Subject: Re: [PATCH] atomic: add atomic_inc_not_zero_hint()
Date: Monday, November 15, 2010 - 7:39 am

> > atomic_read() and atomic_cmpxchg(). We tried prefetchw() and it was a

AMD supports it due to their MOESI protocol, but it's not supported
in MESIF as used by Intel QPI.  The kernel maps it on Intel to 
ordinary prefetch.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.
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Messages in current thread:
[PATCH] atomic: add atomic_inc_not_zero_hint(), Eric Dumazet, (Fri Nov 5, 9:53 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Andrew Morton, (Fri Nov 5, 10:20 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Eric Dumazet, (Fri Nov 5, 11:00 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Andrew Morton, (Fri Nov 5, 11:08 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Eric Dumazet, (Fri Nov 5, 11:20 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Andrew Morton, (Fri Nov 5, 11:28 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Paul E. McKenney, (Fri Nov 5, 11:40 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Eric Dumazet, (Fri Nov 5, 12:12 pm)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Eric Dumazet, (Fri Nov 5, 12:20 pm)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Andrew Morton, (Fri Nov 5, 12:39 pm)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Eric Dumazet, (Fri Nov 5, 12:46 pm)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Paul E. McKenney, (Fri Nov 5, 12:51 pm)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Christoph Lameter, (Fri Nov 12, 12:14 pm)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Paul E. McKenney, (Sat Nov 13, 3:26 pm)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Christoph Lameter, (Mon Nov 15, 6:57 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Andi Kleen, (Mon Nov 15, 7:07 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Christoph Lameter, (Mon Nov 15, 7:16 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Eric Dumazet, (Mon Nov 15, 7:17 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Christoph Lameter, (Mon Nov 15, 7:25 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Andi Kleen, (Mon Nov 15, 7:39 am)
Re: [PATCH] atomic: add atomic_inc_not_zero_hint(), Eric Dumazet, (Mon Nov 15, 7:47 am)