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    SubjectRe: [PATCH 04/29] x86/perfcounters: rework pmc_amd_save_disable_all() and pmc_amd_restore_all()
    Ingo Molnar wrote:

    > Could we remove the disable-all facility altogether and make the
    > core code NMI-safe? The current approach wont scale on CPUs that
    > dont have global-disable features.
    > disable-all was arguably a hack i introduced and which spread too
    > far. Can you see a conceptual need for it?

    If you're talking about hw_perf_save_disable / hw_perf_restore, please
    don't get rid of those. I use them to batch up counter enable/disable
    operations so I only have to compute the PMU config once for each
    batch rather than every time an individual counter is enabled or


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      Last update: 2009-04-29 14:43    [W:0.018 / U:1.816 seconds]
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