Re: [patch] Real-Time Preemption, -VP-2.6.9-rc4-mm1-U0

From: Roland Dreier (roland_at_topspin.com)
Date: 10/15/04

  • Next message: Matthew Wilcox: "Re: [PATCH] Introduce PCI <-> CPU address conversion [1/2]" 
    To: karim@opersys.com
Date:	Thu, 14 Oct 2004 17:31:19 -0700

        Karim> cmpxchg (basically: try reserve; if fail retry; else
        Karim> write), with per-cpu buffers.

    Not sure if I really understand the context where Ingo would use this,
    but this lockless scheme doesn't seem to be safe for realtime; the
    retry can potentially happen an arbitrary number of times.

     - Roland
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  • Next message: Matthew Wilcox: "Re: [PATCH] Introduce PCI <-> CPU address conversion [1/2]"

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