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    SubjectRe: ADI Blackfin patch for kernel 2.6.14
    Andrew Morton wrote:

    >>+asmlinkage int sys_bfin_spinlock(int *spinlock)
    > Whoa, that's a syscall I never expected to see. What's it do?

    Replaces the TESTSET instruction, which has a few errata that make it
    unreliable. It's used by the pthreads library to provide atomic operations.

    > Shouldn't
    > it be using get_user() and put_user()? Or will this forever be a nommu
    > arch?

    We currently don't expect that this code will ever support a MMU, but I
    suppose it could use get/put_user for clarity.

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      Last update: 2005-11-16 14:46    [W:0.020 / U:1.624 seconds]
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