Messages in this thread | | | Subject | Re: [patch] sched_[set|get]_affinity() syscall, 2.4.15-pre9 | From | Andi Kleen <> | Date | 27 Nov 2001 08:32:42 +0100 |
| |
Joe Korty <l-k@mindspring.com> writes: > > 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
Could you quickly explain an use case where it makes a difference if CPU affinity settings for multiple processes are done atomically or not ?
The only way to make CPU affinity settings of processes really atomically without a "consolidation window" is to do them before the process starts up. This is easy when they're inherited -- just set them for the parent before starting the other processes. This works with any interface; proc based or not as long as it inherits.
-Andi - 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/
| |