[Bug 230330] _SC_NPROCESSORS_ONLN reports offline CPUs

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 14 Feb 2023 19:29:10 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230330

Mark Millard <marklmi26-fbsd@yahoo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |marklmi26-fbsd@yahoo.com

--- Comment #6 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
Comment15 in the listed https://sourceware.org/bugzilla/show_bug.cgi?id=27645
(for 2.34) refers to another one:

https://sourceware.org/bugzilla/show_bug.cgi?id=28310

This is were 2.35 reverted some behavior, title:

Do not use affinity mask for sysconf (_SC_NPROCESSORS_CONF)

It was a request to revert:

Related commit:

commit 903bc7dcc2acafc40be11639767e10a2de712649
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Thu Mar 25 09:30:07 2021 -0300

    linux: Use sched_getaffinity for __get_nprocs (BZ #27645)

    Both the sysfs and procfs parsing (through GET_NPROCS_PARSER) are
    removed in favor the syscall.  The initial scratch buffer should
    fit to most of the common usage (1024 bytes with maps to 8192 CPUs).


Comment 1 indicates: "Fixed on 2.35." and is listed as "RESOLVED FIXED".

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