[lkml]   [1997]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    I was playing with nanosleep() and SCHED_FIFO, precisely with 500ns 
    delays on a P100. As I suspected some problem I inspected the code.

    nanosleep() calls udelay() which in turn only has 1 microsecond

    Therefore I tried to find udelay(). Was a bit tricky as it's in a
    include file. Well I saw that udelay uses delay() in turn, and that
    uses loops_per_sec. All old news you'd say, so far.

    Then I wondered who sets loops_per_sec, and I found out that a _lot_
    of code uses loops_per_sec directly to call delay(). As I think
    udelay() is rather new in Linux, I'd suggest to modify the obsolete
    code to use udelay() (unless a delay shorter than 1 microsecond is

    P.S. Sorry, no patch...

     \ /
      Last update: 2005-03-22 13:40    [W:0.039 / U:17.172 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site