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    SubjectRe: [patch] sched_[set|get]_affinity() syscall, 2.4.15-pre9
    At 09:40 AM 11/27/01 +0100, Ingo Molnar wrote:
    > > This patch comes about as an alternative to Ingo Molnar's
    > > syscall-implemented version. Ingo's code is nice; however I and
    > > others expressed discontent as yet another syscall. [...]
    >
    >i do express discontent over yet another procfs bloat. What if procfs is
    >not mounted in a high security installation? Are affinities suddenly
    >unavailable? Such kind of dependencies are unacceptable IMO - if we want
    >to export the setting of affinities to user-space, then it should be a
    >system call.

    ...

    > > [...] Other benefits include the ease with which to set the affinity
    > > of tasks that are unaware of the new interface [...]


    I have not yet seen the patch, but one nice feature that a system call
    interface
    could provide is the ability to *atomically* change the cpu affinities of
    sets of
    processes -- for example, all processes with a certain uid or gid. All that
    would be required would be for the system call to accept a command integer
    value which would define what the argument integer value would mean -- a pid,
    a gid, or a uid.

    Joe


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