Messages in this thread |  | | Subject | Re: [patch] sched_[set|get]_affinity() syscall, 2.4.15-pre9 | From | Robert Love <> | Date | 27 Nov 2001 15:53:04 -0500 |
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On Tue, 2001-11-27 at 02:13, Joe Korty wrote:
> 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.
Effecting all tasks matching a uid or some other filter is a little beyond what either patch does. Note however that both interfaces have atomicity.
You can open and write to proc from within a program ... very easily, in fact.
Also, with some sed and grep magic, you can set the affinity of all tasks via the proc interface pretty easy. Just a couple lines.
Robert Love
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