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    SubjectRe: CONFIG_PREEMPT and server workloads
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    On Thu, 2004-03-18 at 09:51, Andrea Arcangeli wrote:

    > the counter is definitely not optimized away, see:

    This is because of work Dave Miller and Ingo did - irq count, softirq
    count, and lock count (when PREEMPT=y) are unified into preempt_count.

    So it is intended.

    The unification makes things cleaner and simpler, using one value in
    place of three and one interface and concept in place of many others.
    It also gives us a single simple thing to check for an overall notion of
    "atomicity", which is what makes debugging so nice.

    Robert Love


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