[lkml]   [2004]   [Feb]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: When should we use likely() / unlikely() / get_unaligned() ?
    In message <> you write:
    > To be honest, I'm more interested in the case of get_unaligned(). The
    > principle is fairly similar -- the ratio between the performance of the
    > inline and the exception cases varies wildly from architecture to
    > architecture. But the range is far wider -- we now support architectures
    > in 2.6 where alignment fixups _cannot_ happen, and the cost of the
    > 'exception' case should be considered infinite.

    Um, we do? I thought it was compulsory in the kernel, otherwise
    networking breaks on packets w/ wierd hardware headers.

    Anyone who quotes me in their sig is an idiot. -- Rusty Russell.
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 14:00    [W:0.019 / U:7.644 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site