Messages in this thread | | | Date | Wed, 15 Feb 2023 08:23:05 +0530 | Subject | Re: [PATCH v18 5/7] kexec: exclude hot remove cpu from elfcorehdr notes | From | Sourabh Jain <> |
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On 13/02/23 18:22, Thomas Gleixner wrote: > On Mon, Feb 13 2023 at 10:10, Sourabh Jain wrote: >> The sysconf document says _SC_NPROCESSORS_CONF is processors configured, >> isn't that equivalent to possible CPUs? > glibc tries to evaluate that in the following order: > > 1) /sys/devices/system/cpu/cpu* > > That's present CPUs not possible CPUs > > 2) /proc/stat > > That's online CPUs > > 3) sched_getaffinity() > > That's online CPUs at best. In the worst case it's an affinity mask > which is set on a process group
Thanks for the clarification Thomas.
- Sourabh
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