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authorAnshuman Khandual <anshuman.khandual@arm.com>2022-03-24 18:10:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-24 19:06:45 -0700
commit4cc79b3303f224a920f3aff21f3d231749d73384 (patch)
tree65d441557ed1cd72d8436dd9342304f24ad1d4e6 /mm/migrate.c
parent283fd6fe0528ae2fe0222a35ecfdfcbbaeee8159 (diff)
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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/migrate.c')
-rw-r--r--mm/migrate.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index 4f30ed37856f..3d60823afd2d 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -53,7 +53,6 @@
#include <asm/tlbflush.h>
-#define CREATE_TRACE_POINTS
#include <trace/events/migrate.h>
#include "internal.h"
@@ -249,6 +248,9 @@ static bool remove_migration_pte(struct folio *folio,
if (vma->vm_flags & VM_LOCKED)
mlock_page_drain(smp_processor_id());
+ trace_remove_migration_pte(pvmw.address, pte_val(pte),
+ compound_order(new));
+
/* No need to invalidate - it was non-present before */
update_mmu_cache(vma, pvmw.address, pvmw.pte);
}