Messages in this thread | | | Date | Thu, 26 Feb 2009 13:26:23 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] cpuacct: add a branch prediction |
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* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> On Thu, 2009-02-26 at 21:06 +0900, KAMEZAWA Hiroyuki wrote: > > Hmm.. some routine like > > atomic64_read() can help this ? (But I don't want to use atomic_t here..) > > Yeah, atomic64_t has been proposed numerous times, and x86 > could actually implement that using cmpxchg8b, just not sure > about all the other 32bit archs, and if we start using it in > the scheduler, they'd better have it implemented.
I have written a working atomic64_t implementation for tip:perfcounters/core, for 32-bit x86.
Ingo
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