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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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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