[lkml]   [2003]   [Jan]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: detecting hyperthreading in linux 2.4.19
    On Fri, Jan 10, 2003 at 08:05:07AM +0100, Mikael Pettersson wrote:

    > If the kernel has sched_setaffinity() or some other way of binding a process
    > to a given CPU (as numbered by the kernel, which may or may not be related
    > to any physical CPU numbers), then this will do it: execute CPUID on each
    > CPU and check the initial APIC ID field. If you find one that's non-zero,
    > then HT is enabled.

    That's a horrible way of reimplementing /dev/cpu/x/cpuid 8-)


    | Dave Jones.
    | SuSE Labs
    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 13:32    [W:0.020 / U:8.188 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site