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    SubjectRe: [PATCH -v4 1/2] lib, Make gen_pool memory allocator lockless
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    On Wed, 2010-11-17 at 14:05 +0800, Huang Ying wrote:
    > Hi, Peter,
    >
    > Do you think think irq_work should depend on that? Or we just
    > reimplement irq_work based on lockless list and make irq_work depends on
    > lockless list?

    If you can make it use a lockless list thing that's fine.

    I'm not sure Andrew's CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG makes much sense
    for CONFIG_ARCH_HAVE_NMI=n though..

    Anyway, make sure to consolidate net/rds/xlist.h and its users, having
    two lockless lists is one too many.

    > At least as the first step, I prefer to just make lockless list depend
    > on CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG.

    But only if the platform has NMIs, otherwise its moot.


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