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    SubjectRe: [tip:perf/core] perf_events: Undo some recursion damage
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    On Mon, 2009-11-23 at 13:39 +0100, Frederic Weisbecker wrote:
    > On Mon, Nov 23, 2009 at 11:55:08AM +0000, tip-bot for Peter Zijlstra wrote:
    > > Commit-ID: 4ed7c92d68a5387ba5f7030dc76eab03558e27f5
    > > Gitweb: http://git.kernel.org/tip/4ed7c92d68a5387ba5f7030dc76eab03558e27f5
    > > Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
    > > AuthorDate: Mon, 23 Nov 2009 11:37:29 +0100
    > > Committer: Ingo Molnar <mingo@elte.hu>
    > > CommitDate: Mon, 23 Nov 2009 11:49:57 +0100
    > >
    > > perf_events: Undo some recursion damage
    > >
    > > Make perf_swevent_get_recursion_context return a context number
    > > and disable preemption.
    > >
    > > This could be used to remove the IRQ disable from the trace bit
    > > and index the per-cpu buffer with.
    >
    >
    > But if I do that, it means I will lose traces once irq nest.

    Ah yes, that crap :-(

    Maybe its about time we extend the generic irq bits to know about nested
    irqs, or firmly kill the whole notion.



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