Messages in this thread | | | Date | Fri, 4 Jun 2004 11:42:14 -0700 | From | William Lee Irwin III <> | Subject | Re: [PATCH] cpumask 5/10 rewrite cpumask.h - single bitmap based implementation |
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William Lee Irwin III wrote: >> Without any way to reliably determine this, luserspace is fscked.
On Fri, Jun 04, 2004 at 11:42:19AM -0700, Paul Jackson wrote: > I don't see why user code needs to determine NR_CPUS exactly. Any > reasonable upper bound should work - reasonable meaning doesn't waste > too many unused words of memory. > It's not really NR_CPUS that users need - its a reasonably close upper > bound to the size of the space that sched_getaffinity() must be provided > they need. And your code does a pretty good job of providing that.
Wrong. Apps that want to reconfigure the system to e.g. online more cpus in response to heightened load want to know.
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