diff options
| author |   Anshuman Khandual <anshuman.khandual@arm.com> | 2022-03-24 18:10:01 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-24 19:06:45 -0700 |
| commit | 4cc79b3303f224a920f3aff21f3d231749d73384 (patch) | |
| tree | 65d441557ed1cd72d8436dd9342304f24ad1d4e6 /mm/rmap.c | |
| parent | mm/migration: add trace events for THP migrations (diff) | |
| download | linux-dev-4cc79b3303f224a920f3aff21f3d231749d73384.tar.xz linux-dev-4cc79b3303f224a920f3aff21f3d231749d73384.zip | |
mm/migration: add trace events for base page and HugeTLB migrations
This adds two trace events for base page and HugeTLB page migrations.
These events, closely follow the implementation details like setting and
removing of PTE migration entries, which are essential operations for
migration. The new CREATE_TRACE_POINTS in <mm/rmap.c> covers both
<events/migration.h> and <events/tlb.h> based trace events. Hence drop
redundant CREATE_TRACE_POINTS from other places which could have otherwise
conflicted during build.
Link: https://lkml.kernel.org/r/1643368182-9588-3-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index ee1f10df984d..bfcc8e3d412f 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -76,7 +76,9 @@ #include <asm/tlbflush.h> +#define CREATE_TRACE_POINTS #include <trace/events/tlb.h> +#include <trace/events/migrate.h> #include "internal.h" @@ -1849,6 +1851,8 @@ static bool try_to_migrate_one(struct folio *folio, struct vm_area_struct *vma, if (pte_swp_uffd_wp(pteval)) swp_pte = pte_swp_mkuffd_wp(swp_pte); set_pte_at(mm, pvmw.address, pvmw.pte, swp_pte); + trace_set_migration_pte(pvmw.address, pte_val(swp_pte), + compound_order(&folio->page)); /* * No need to invalidate here it will synchronize on * against the special swap migration pte. @@ -1917,6 +1921,8 @@ static bool try_to_migrate_one(struct folio *folio, struct vm_area_struct *vma, if (pte_uffd_wp(pteval)) swp_pte = pte_swp_mkuffd_wp(swp_pte); set_pte_at(mm, address, pvmw.pte, swp_pte); + trace_set_migration_pte(address, pte_val(swp_pte), + compound_order(&folio->page)); /* * No need to invalidate here it will synchronize on * against the special swap migration pte. |