Messages in this thread |  | | Date | Tue, 27 Nov 2001 12:52:26 +0100 (CET) | From | Ingo Molnar <> | Subject | Re: [PATCH] proc-based cpu affinity user interface |
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On 26 Nov 2001, Robert Love wrote:
> Attached is my procfs-based implementation of a user interface for > getting and setting a task's CPU affinity. Patch is against 2.4.16.
two comments. First, this has already been done - Andrew Morton has written such a patch.
Second, as i've repeatedly said it, it's a failure to do this over /proc. What if /proc is not mounted? What if the process is in a chroot() environment, should it not be able to set its own affinity? This is a fundamental limitation of your approach, and *if* we want to export the cpus_allowed affinity to user-space (which is up to discussion), then the right way (TM) to do it is via a syscall.
Ingo
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