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    SubjectRe: [PATCH] x86: enable preemption in delay
    On Sat, 24 May 2008 23:11:20 -0400 (EDT)
    Steven Rostedt <rostedt@goodmis.org> wrote:
    >
    > In git commit 35d5d08a085c56f153458c3f5d8ce24123617faf, Andrew Morton
    > placed preempt_disable around the entire delay due to TSC's not
    > working nicely on SMP. Unfortunately for those that care about
    > latencies this is devastating! Especially when we have callers to
    > mdelay(8).

    we used to have a WARN_ON if mdelay was called while preemptable..
    maybe we should put that back in?


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