[lkml]   [2007]   [Aug]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH] SLUB use cmpxchg_local
    On Mon, 2007-08-27 at 15:15 -0700, Christoph Lameter wrote:
    > Hmmmm. One wild idea would be to use a priority futex for the slab lock?
    > That would make the slow paths interrupt safe without requiring interrupt
    > disable? Does a futex fit into the page struct?

    Very much puzzled at what you propose. in-kernel we use rt_mutex (has
    PI) or mutex, futexes are user-space. (on -rt spinlock_t == mutex ==

    Neither disable interrupts since they are sleeping locks.

    That said, on -rt we do not need to disable interrupts in the allocators
    because its a bug to call an allocator from raw irq context.

    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: 2007-08-28 09:15    [W:0.018 / U:10.040 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site