lkml.org 
[lkml]   [2006]   [Aug]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC] NUMA futex hashing
    Ulrich Drepper wrote:

    >> Of course we would need a new syscall, and to change glibc to be able to
    >> actually use this new private_futex syscall.
    >
    >
    > No, why? The kernel already does recognize private mutexes. It just
    > checks whether the pages used to store it are private or mapped. This
    > requires some interaction with the memory subsystem but as long as no
    > crashes happen the data can change underneath. It's the program's
    > fault if it does.


    Because that requires taking mmap_sem. Avoiding that is the whole
    purpose, isn't it?

    --

    Send instant messages to your online friends http://au.messenger.yahoo.com

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2006-08-09 04:01    [W:4.274 / U:0.060 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site