On Sun, Jan 29, 2023 at 12:38:20PM +0000, Dmitry Chagin wrote: > The branch main has been updated by dchagin: > > URL: > https://cgit.FreeBSD.org/src/commit/?id=01f74ccd5a0d1a444703e931339709c7de5296b5 > > commit 01f74ccd5a0d1a444703e931339709c7de5296b5 > Author: Dmitry Chagin <[email protected]> > AuthorDate: 2023-01-29 12:35:18 +0000 > Commit: Dmitry Chagin <[email protected]> > CommitDate: 2023-01-29 12:35:18 +0000 > > libthr: Fix pthread_attr_[g|s]etaffinity_np to match it's manual and the > kernel. > > Since f35093f8 semantics of a thread affinity functions is changed to be a > compatible with Linux: > > In case of getaffinity(), the minimum cpuset_t size that the kernel > permits is > the maximum CPU id, present in the system, / NBBY bytes, the maximum size > is not > limited. > In case of setaffinity(), the kernel does not limit the size of the > user-provided > cpuset_t, internally using only the meaningful part of the set, where the > upper > bound is the maximum CPU id, present in the system, no larger than the > size of > the kernel cpuset_t. > > To match pthread_attr_[g|s]etaffinity_np checks of the user-provided > cpusets to > the kernel behavior export the minimum cpuset_t size allowed by running > kernel > via new sysctl kern.sched.cpusetsizemin and use it in checks. > > Reviewed by:
whoops, kib@
