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    SubjectRe: [Patch][RFC] Disabling per-tgid stats on task exit in taskstats
    Andrew Morton wrote:
    > On Fri, 09 Jun 2006 03:41:04 -0400
    > Shailabh Nagar <nagar@watson.ibm.com> wrote:
    >
    >
    >>Hence, this patch introduces a configuration parameter
    >> /sys/kernel/taskstats_tgid_exit
    >>through which a privileged user can turn on/off sending of per-tgid stats on
    >>task exit.
    >
    >
    > That seems a bit clumsy. What happens if one consumer wants the per-tgid
    > stats and another does not?

    For all subsystems that re-use the taskstats structure from the exit path,
    we have the issue that you mentioned. Thats because several statistics co-exist
    in the same structure. These subsystems can keep their tgid-stats empty by not
    filling up anything in fill_tgid() or using this patch to selectively enable/disable
    tgid stats.

    For other subsystems, they could pass tgidstats as NULL to taskstats_exit_send().

    --

    Balbir Singh,
    Linux Technology Center,
    IBM Software Labs
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