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    SubjectRe: [stable] 2.6.23 regression: top displaying 9999% CPU usage
    Christian Borntraeger wrote:
    > Am Montag, 29. Oktober 2007 schrieb Balbir Singh:
    >> We'll also need this additional patch (untested), but in the long run
    >> I think the approach needs to be
    >>
    >> 1. Update stime and utime at the time of context switching -- keep it
    >> in sync with p->sum_exec_runtime
    >> 2. Keep track of system/user context at system call entry points
    >
    > This is similar to what s390 and ppc64 do when CONFIG_VIRT_CPU_ACCOUNTING is
    > set. Whenever you do a patch, please make sure to not break the already
    > precise values for utime and stime on s390 and ppc. Feel free to CC me
    > whenever you have a patch for this.
    >

    Yes, true. I'll cc everyone on this list and send out the patch as RFC.
    Much of this code will be architecture specific and as you rightly
    pointed out, needs to happen under !CONFIG_VIRT_CPU_ACCOUNTING

    > Christian


    --
    Warm Regards,
    Balbir Singh
    Linux Technology Center
    IBM, ISTL
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