]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
mm/page_alloc: print node fallback order
authorBharata B Rao <bharata@amd.com>
Fri, 5 Nov 2021 20:40:18 +0000 (13:40 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 6 Nov 2021 20:30:37 +0000 (13:30 -0700)
commit6cf253925df72e522c06dac09ede7e81a6e38121
treefb61677b325d9f894e06df29ea7292b88edf04f0
parentba7f1b9e3fd9a2a64c5da04995919c9eb5bab974
mm/page_alloc: print node fallback order

Patch series "Fix NUMA nodes fallback list ordering".

For a NUMA system that has multiple nodes at same distance from other
nodes, the fallback list generation prefers same node order for them
instead of round-robin thereby penalizing one node over others.  This
series fixes it.

More description of the problem and the fix is present in the patch
description.

This patch (of 2):

Print information message about the allocation fallback order for each
NUMA node during boot.

No functional changes here.  This makes it easier to illustrate the
problem in the node fallback list generation, which the next patch
fixes.

Link: https://lkml.kernel.org/r/20210830121603.1081-1-bharata@amd.com
Link: https://lkml.kernel.org/r/20210830121603.1081-2-bharata@amd.com
Signed-off-by: Bharata B Rao <bharata@amd.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Krupa Ramakrishnan <krupa.ramakrishnan@amd.com>
Cc: Sadagopan Srinivasan <Sadagopan.Srinivasan@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/page_alloc.c