[lkml]   [2004]   [Jan]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [RFC/PATCH, 2/4] readX_check() performance evaluation
    On Wed, 28 Jan 2004 12:28:56 -0800 (PST)
    Linus Torvalds <> wrote:

    > Alternatively, if you get a lot of information at MCE time (CPU that did
    > the access + some device data), just queue up the information in a per-CPU
    > queue. You don't have to worry about overflow - you can just drop if if

    That assumes that the access happened with preempt off ?

    That's fine if it's guaranteed that the MCE still happened inside
    readl/writel. But if it's delayed longer for some reason there is no guarantee
    that you can find back to the CPU that caused the fault.

    Putting it into the pci_dev and using RCU would be probably better.

    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:0.018 / U:2.080 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site