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Ulrich Drepper <drepper@redhat.com> writes: > I intend to change the interfaces taking a cpuset_t parameter. > Currently we have > > extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr, > __const cpu_set_t *__cpuset); > extern int pthread_attr_getaffinity_np (__const pthread_attr_t *__attr, > cpu_set_t *__cpuset); > > and the sched_[sg]etaffinity interfaces which have no prototype yet. > > The problem is the limited cpuset_t size. Just thinking about HT > multicore processors in multi-processor machines should be enough that > 1024 virtual processors isn't that hard to reach. > > > Therefore the interface should include a size parameter: > > extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr, > __const cpu_set_t *__cpuset, > size_t size); > extern int pthread_attr_getaffinity_np (__const pthread_attr_t *__attr, > cpu_set_t *__cpuset, > size_t size); > > > This way the data structure can be expanded if necessary. > > The interfaces are in very little use today. We keep the old interfaces > and make them simple wrappers with a fixed size of 128 bytes. > > > Unless I hear well-founded objections I'll make the change tomorrow. Go ahead and make the change. Since you leave the compatibilty interface, it should be ok... Andreas -- Andreas Jaeger, aj@suse.de, http://www.suse.de/~aj SuSE Linux AG, Maxfeldstr. 5, 90409 Nürnberg, Germany GPG fingerprint = 93A3 365E CE47 B889 DF7F FED1 389A 563C C272 A126
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