tree fa5aa16a8f0f487d76b38fc06cfca6e5511a5bf8
parent 9138a2a67f7f29948f6f608bf904b3605f1b45d0
author Tobias Klauser <tklauser@distanz.ch> 1588610191 +0200
committer Tobias Klauser <tobias.klauser@gmail.com> 1597655570 +0000

runtime: use hw.ncpuonline sysctl in getncpu on netbsd

Since NetBSD 7, hw.ncpuonline reports the number of CPUs online, while
hw.cpu reports the number of CPUs configured. Try hw.cpuonline first and
fall back to hw.ncpu in case it fails (which is the case on NetBSD
before 7.0).

This follows the behavior on OpenBSD (see CL 161757). Also, Go
in pkgsrc is patched to use hw.cpuonline, so this CL would allow said
patch to be dropped.

Updates #30824

Change-Id: Id1c19dff2c1e4401e6074179fae7c708ba0e3098
Reviewed-on: https://go-review.googlesource.com/c/go/+/231957
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>