[lkml]   [2005]   [Mar]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: aio stress panic on 2.6.11-mm1
    On Wed, 2005-03-09 at 16:34 +0530, Suparna Bhattacharya wrote:
    > Any sense of how costly it is to use spin_lock_irq's vs spin_lock
    > (across different architectures)

    on x86 it makes a difference of maybe a few cycles. At most.
    However please consider using spin_lock_irqsave(); the _irq() variant,
    while it can be used correctly, is a major source of bugs since it
    unconditionally enables interrupts on unlock.

    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 14:11    [W:0.020 / U:11.924 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site