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063b8b1251
The updates to powerpc numa and memory hotplug code now use the in-kernel LMB array instead of the device tree. This change allows the pseries memory DLPAR code to only update the device tree once after successfully handling a DLPAR request. Prior to the in-kernel LMB array, the numa code looked up the affinity for memory being added in the device tree, the code now looks this up in the LMB array. This change means the memory hotplug code can just update the affinity for an LMB in the LMB array instead of updating the device tree. This also provides a savings in kernel memory. When updating the device tree old properties are never free'ed since there is no usecount on properties. This behavior leads to a new copy of the property being allocated every time a LMB is added or removed (i.e. a request to add 100 LMBs creates 100 new copies of the property). With this update only a single new property is created when a DLPAR request completes successfully. Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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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 Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
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.