[PATCH v4] pseries/hotplug-memory: hot-add: skip redundant LMB lookup

[Michael Ellerman]

On Wed, 16 Sep 2020 09:51:22 -0500, Scott Cheloha wrote:
> During memory hot-add, dlpar_add_lmb() calls memory_add_physaddr_to_nid()
> to determine which node id (nid) to use when later calling __add_memory().
> 
> This is wasteful.  On pseries, memory_add_physaddr_to_nid() finds an
> appropriate nid for a given address by looking up the LMB containing the
> address and then passing that LMB to of_drconf_to_nid_single() to get the
> nid.  In dlpar_add_lmb() we get this address from the LMB itself.
> 
> [...]

Applied to powerpc/next.

[1/1] pseries/hotplug-memory: hot-add: skip redundant LMB lookup
      https://git.kernel.org/powerpc/c/72cdd117c449896c707fc6cfe5b90978160697d0

cheers