diff options
| author | Ye Liu <ye.liu@linux.dev> | 2026-07-01 14:10:46 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-07-05 16:22:55 -0700 |
| commit | 8eb79123c241a1fc55e607fa9737b1d55d6a7710 (patch) | |
| tree | c1f41f6327b078f3516a8322544d29ac9bebbf98 /include/trace/events | |
| parent | 76cb547ce005e68204fa9dbd7112ae161b453580 (diff) | |
| download | linux-next-8eb79123c241a1fc55e607fa9737b1d55d6a7710.tar.gz linux-next-8eb79123c241a1fc55e607fa9737b1d55d6a7710.zip | |
mm: use enum migrate_reason instead of int for migration reason parameters
Replace all 'int reason' function parameters that carry migrate_reason
values with the proper 'enum migrate_reason' type. This makes the intent
explicit and leverages compiler type checking. The affected subsystems
are:
- page_owner: __folio_set_owner_migrate_reason(),
folio_set_owner_migrate_reason()
- migrate: migrate_pages(), migrate_pages_sync(),
migrate_pages_batch(), migrate_folios_move(),
migrate_hugetlbs(), unmap_and_move_huge_page()
- hugetlb: move_hugetlb_state(), htlb_allow_alloc_fallback()
- trace: mm_migrate_pages and mm_migrate_pages_start events
The 'short last_migrate_reason' struct field and internal helper
parameter in page_owner are intentionally left as 'short' since they
store per-page metadata where size matters.
No functional change.
Link: https://lore.kernel.org/20260701061101.344679-4-ye.liu@linux.dev
Signed-off-by: Ye Liu <ye.liu@linux.dev>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Reviewed-by: Lorenzo Stoakes <ljs@kernel.org>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/trace/events')
| -rw-r--r-- | include/trace/events/migrate.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/trace/events/migrate.h b/include/trace/events/migrate.h index 11bc0aa14c7e..15ee2ef201b5 100644 --- a/include/trace/events/migrate.h +++ b/include/trace/events/migrate.h @@ -52,7 +52,7 @@ TRACE_EVENT(mm_migrate_pages, TP_PROTO(unsigned long succeeded, unsigned long failed, unsigned long thp_succeeded, unsigned long thp_failed, unsigned long thp_split, unsigned long large_folio_split, - enum migrate_mode mode, int reason), + enum migrate_mode mode, enum migrate_reason reason), TP_ARGS(succeeded, failed, thp_succeeded, thp_failed, thp_split, large_folio_split, mode, reason), @@ -65,7 +65,7 @@ TRACE_EVENT(mm_migrate_pages, __field( unsigned long, thp_split) __field( unsigned long, large_folio_split) __field( enum migrate_mode, mode) - __field( int, reason) + __field( enum migrate_reason, reason) ), TP_fast_assign( @@ -92,13 +92,13 @@ TRACE_EVENT(mm_migrate_pages, TRACE_EVENT(mm_migrate_pages_start, - TP_PROTO(enum migrate_mode mode, int reason), + TP_PROTO(enum migrate_mode mode, enum migrate_reason reason), TP_ARGS(mode, reason), TP_STRUCT__entry( __field(enum migrate_mode, mode) - __field(int, reason) + __field(enum migrate_reason, reason) ), TP_fast_assign( |