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thread-utils.c: detect online CPU count on OpenBSD / NetBSD

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OpenBSD / NetBSD use HW_NCPUONLINE to detect the online CPU
count. OpenBSD ships with SMT disabled on X86 systems so
HW_NCPU would provide double the number of CPUs as opposed
to the proper online count.

Signed-off-by: Brad Smith <brad@comstyle.com>
Reviewed-by: Collin Funk <collin.funk1@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brad Smith
2025-05-09 02:13:13 -04:00
committed by Junio C Hamano
parent d50a5e8939
commit 7f1a09dbb6
1 changed files with 4 additions and 4 deletions
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8
thread-utils.c
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@@ -46,11 +46,11 @@ int online_cpus(void)
mib[0] = CTL_HW;
# ifdef HW_AVAILCPU
mib[1] = HW_AVAILCPU;
len = sizeof(cpucount);
if (!sysctl(mib, 2, &cpucount, &len, NULL, 0))
return cpucount;
# endif /* HW_AVAILCPU */
# elif defined(HW_NCPUONLINE)
mib[1] = HW_NCPUONLINE;
# else
mib[1] = HW_NCPU;
# endif /* HW_AVAILCPU */
len = sizeof(cpucount);
if (!sysctl(mib, 2, &cpucount, &len, NULL, 0))
return cpucount;