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8127c4fdf1
Systems can now be partitioned into resource groups. By default all systems will be part of default resource group. Once a resource group is created, and resources allocated to the resource group, those resources will be removed from the default resource group. If a LPAR moved to a resource group, then it can only use resources in the resource group. So maximum processors that can be allocated to a LPAR can be equal or smaller than the resources in the resource group. lparcfg can now exposes the resource group id to which this LPAR belongs to. It also exposes the number of processors in the current resource group. The default resource group id happens to be 0. These would be documented in the upcoming PAPR update. Example of an LPAR in a default resource group root@ltcp11-lp3 $ grep resource_group /proc/powerpc/lparcfg resource_group_number=0 resource_group_active_processors=50 root@ltcp11-lp3 $ Example of an LPAR in a non-default resource group root@ltcp11-lp5 $ grep resource_group /proc/powerpc/lparcfg resource_group_number=1 resource_group_active_processors=30 root@ltcp11-lp5 $ Signed-off-by: Srikar Dronamraju <srikar@linux.ibm.com> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20250716104600.59102-1-srikar@linux.ibm.com |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.