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Use sysconf() to determine active and existing CPUs on Linux #1342

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Use sysconf() to determine active and existing CPUs on Linux #1342

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Commits on Dec 3, 2023

  1. Use sysconf() to determine active and existing CPUs on Linux 

    Instead of enumerating the number of active and existing CPUs on Linux
by iterating over the pseudo-files below /sys/devices/system/cpu/, it
is better to retrieve the number of active and existing CPUs using the
sysconf() function using _SC_NPROCESSORS_ONLN and _SC_NPROCESSORS_CONF
which will always report the correct numbers.

Fixes htop-dev#757
    @glaubitz
    glaubitz committed Dec 3, 2023
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