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    SubjectRe: [RFC PATCH 1/2] perf_events: add support for per-cpu per-cgroup monitoring (v2)
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    On Wed, Sep 8, 2010 at 3:57 PM, Peter Zijlstra <peterz@infradead.org> wrote:
    > On Wed, 2010-09-08 at 15:56 +0200, stephane eranian wrote:
    >> On Wed, Sep 8, 2010 at 3:52 PM, Peter Zijlstra <peterz@infradead.org> wrote:
    >> > On Wed, 2010-09-08 at 15:30 +0200, Stephane Eranian wrote:
    >> >> +       } times[NR_CPUS] ____cacheline_aligned_in_smp;
    >> >
    >> > That's fail! NR_CPUS can be like 4k for distro configs.
    >> >
    >> How do you do this on struct that are dynamically allocated?
    >> The number of css is dynamic.
    >
    > alloc_percpu()?
    >
    Ok, I will look into this. Thanks.
    Clearly we can kmalloc() the array. But it would be nicer to have one
    struct allocated per-cpu (avoid the cacheline_aligned_in_smp stuff).
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