diff options
| author | Huang Ying <[email protected]> | 2022-08-17 16:14:03 +0800 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2022-09-26 19:46:06 -0700 |
| commit | fbed53b47770b978be290cec0f4f22577766c12d (patch) | |
| tree | 8fc63101ae1ec85cc074b873d3f424148351d520 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 9c62ff005fc774fb2ba14223b0d865a8aca48fb5 (diff) | |
migrate_pages(): fix THP failure counting for -ENOMEM
In unmap_and_move(), if the new THP cannot be allocated, -ENOMEM will be
returned, and migrate_pages() will try to split the THP unless "reason" is
MR_NUMA_MISPLACED (that is, nosplit == true). But when nosplit == true,
the THP migration failure will not be counted.
This is incorrect, so in this patch, the THP migration failure will be
counted for -ENOMEM regardless of nosplit is true or false. The nr_failed
counting isn't fixed because it's not used. Added some comments for it
per Baolin's suggestion.
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 5984fabb6e82 ("mm: move_pages: report the number of non-attempted pages")
Signed-off-by: "Huang, Ying" <[email protected]>
Reviewed-by: Baolin Wang <[email protected]>
Reviewed-by: Oscar Salvador <[email protected]>
Cc: Zi Yan <[email protected]>
Cc: Yang Shi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions