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    SubjectRe: [PATCH 0/4] futex: get_user_pages_fast() for shared futexes
    On Tue, Sep 30, 2008 at 3:55 AM, Eric Dumazet <> wrote:
    > I am not sure how it could be converted to private futexes, since
    > old binaries (static glibc) will use FUTEX_WAKE like calls.

    We considered this back when but any effort seems too much. We'd
    either need a clone flag (a scarce resource) or replace the set_tid
    _address syscall. Given that the futex is woken once per thread
    lifetime it shouldn't be an issue. If the semaphore shows up even
    after this patch feel free to introduce a new set_tid_address syscall.

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      Last update: 2008-10-01 05:17    [W:0.019 / U:106.796 seconds]
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