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c95dc0a84b
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/20260714015117.78351-4-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>
Acked-by: David Hildenbrand (Arm) <david@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>
149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM migrate
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#if !defined(_TRACE_MIGRATE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_MIGRATE_H
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#include <linux/tracepoint.h>
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#define MIGRATE_MODE \
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EM( MIGRATE_ASYNC, "MIGRATE_ASYNC") \
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EM( MIGRATE_SYNC_LIGHT, "MIGRATE_SYNC_LIGHT") \
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EMe(MIGRATE_SYNC, "MIGRATE_SYNC")
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#define MIGRATE_REASON \
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EM( MR_COMPACTION, "compaction") \
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EM( MR_MEMORY_FAILURE, "memory_failure") \
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EM( MR_MEMORY_HOTPLUG, "memory_hotplug") \
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EM( MR_SYSCALL, "syscall_or_cpuset") \
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EM( MR_MEMPOLICY_MBIND, "mempolicy_mbind") \
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EM( MR_NUMA_MISPLACED, "numa_misplaced") \
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EM( MR_CONTIG_RANGE, "contig_range") \
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EM( MR_LONGTERM_PIN, "longterm_pin") \
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EM( MR_DEMOTION, "demotion") \
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EM( MR_DAMON, "damon") \
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EMe(MR_NEVER, "never_migrated")
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/*
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* First define the enums in the above macros to be exported to userspace
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* via TRACE_DEFINE_ENUM().
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*/
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#undef EM
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#undef EMe
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#define EM(a, b) TRACE_DEFINE_ENUM(a);
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#define EMe(a, b) TRACE_DEFINE_ENUM(a);
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MIGRATE_MODE
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MIGRATE_REASON
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/*
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* Now redefine the EM() and EMe() macros to map the enums to the strings
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* that will be printed in the output.
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*/
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#undef EM
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#undef EMe
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#define EM(a, b) {a, b},
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#define EMe(a, b) {a, b}
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TRACE_EVENT(mm_migrate_pages,
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TP_PROTO(unsigned long succeeded, unsigned long failed,
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unsigned long thp_succeeded, unsigned long thp_failed,
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unsigned long thp_split, unsigned long large_folio_split,
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enum migrate_mode mode, enum migrate_reason reason),
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TP_ARGS(succeeded, failed, thp_succeeded, thp_failed,
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thp_split, large_folio_split, mode, reason),
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TP_STRUCT__entry(
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__field( unsigned long, succeeded)
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__field( unsigned long, failed)
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__field( unsigned long, thp_succeeded)
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__field( unsigned long, thp_failed)
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__field( unsigned long, thp_split)
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__field( unsigned long, large_folio_split)
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__field( enum migrate_mode, mode)
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__field( enum migrate_reason, reason)
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),
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TP_fast_assign(
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__entry->succeeded = succeeded;
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__entry->failed = failed;
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__entry->thp_succeeded = thp_succeeded;
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__entry->thp_failed = thp_failed;
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__entry->thp_split = thp_split;
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__entry->large_folio_split = large_folio_split;
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__entry->mode = mode;
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__entry->reason = reason;
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),
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TP_printk("nr_succeeded=%lu nr_failed=%lu nr_thp_succeeded=%lu nr_thp_failed=%lu nr_thp_split=%lu nr_split=%lu mode=%s reason=%s",
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__entry->succeeded,
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__entry->failed,
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__entry->thp_succeeded,
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__entry->thp_failed,
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__entry->thp_split,
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__entry->large_folio_split,
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__print_symbolic(__entry->mode, MIGRATE_MODE),
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__print_symbolic(__entry->reason, MIGRATE_REASON))
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);
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TRACE_EVENT(mm_migrate_pages_start,
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TP_PROTO(enum migrate_mode mode, enum migrate_reason reason),
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TP_ARGS(mode, reason),
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TP_STRUCT__entry(
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__field(enum migrate_mode, mode)
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__field(enum migrate_reason, reason)
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),
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TP_fast_assign(
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__entry->mode = mode;
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__entry->reason = reason;
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),
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TP_printk("mode=%s reason=%s",
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__print_symbolic(__entry->mode, MIGRATE_MODE),
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__print_symbolic(__entry->reason, MIGRATE_REASON))
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);
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DECLARE_EVENT_CLASS(migration_pte,
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TP_PROTO(unsigned long addr, unsigned long pte, int order),
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TP_ARGS(addr, pte, order),
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TP_STRUCT__entry(
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__field(unsigned long, addr)
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__field(unsigned long, pte)
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__field(int, order)
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),
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TP_fast_assign(
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__entry->addr = addr;
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__entry->pte = pte;
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__entry->order = order;
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),
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TP_printk("addr=%lx, pte=%lx order=%d", __entry->addr, __entry->pte, __entry->order)
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);
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DEFINE_EVENT(migration_pte, set_migration_pte,
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TP_PROTO(unsigned long addr, unsigned long pte, int order),
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TP_ARGS(addr, pte, order)
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);
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DEFINE_EVENT(migration_pte, remove_migration_pte,
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TP_PROTO(unsigned long addr, unsigned long pte, int order),
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TP_ARGS(addr, pte, order)
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);
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#endif /* _TRACE_MIGRATE_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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