diff options
| author | Bharata B Rao <[email protected]> | 2021-11-05 13:40:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2021-11-06 13:30:37 -0700 |
| commit | 6cf253925df72e522c06dac09ede7e81a6e38121 (patch) | |
| tree | fb61677b325d9f894e06df29ea7292b88edf04f0 | |
| parent | ba7f1b9e3fd9a2a64c5da04995919c9eb5bab974 (diff) | |
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/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Bharata B Rao <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Reviewed-by: Anshuman Khandual <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Lee Schermerhorn <[email protected]>
Cc: Krupa Ramakrishnan <[email protected]>
Cc: Sadagopan Srinivasan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/page_alloc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 307ad23cb9e9..163f60dcac47 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6262,6 +6262,10 @@ static void build_zonelists(pg_data_t *pgdat) build_zonelists_in_node_order(pgdat, node_order, nr_nodes); build_thisnode_zonelists(pgdat); + pr_info("Fallback order for Node %d: ", local_node); + for (node = 0; node < nr_nodes; node++) + pr_cont("%d ", node_order[node]); + pr_cont("\n"); } #ifdef CONFIG_HAVE_MEMORYLESS_NODES |