[PATCH v18 5/7] kexec: exclude hot remove cpu from elfcorehdr notes
Sourabh Jain
sourabhjain at linux.ibm.com
Tue Feb 14 18:53:05 PST 2023
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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