From: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Subject: mm: khugepaged: add trace status description for SCAN_PAGE_HAS_PRIVATE
Commit 99cb0dbd47a1 ("mm,thp: add read-only THP support for (non-shmem)
FS") introduced a new khugepaged scan result: SCAN_PAGE_HAS_PRIVATE, but
the corresponding description for trace events were not added.
Link: http://lkml.kernel.org/r/1574793844-2914-1-git-send-email-yang.shi@xxxxxxxxxxxxxxxxx
Fixes: 99cb0dbd47a1 ("mm,thp: add read-only THP support for (non-shmem) FS")
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Cc: Song Liu <songliubraving@xxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/trace/events/huge_memory.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/include/trace/events/huge_memory.h~mm-khugepaged-add-trace-status-description-for-scan_page_has_private
+++ a/include/trace/events/huge_memory.h
@@ -31,7 +31,8 @@
EM( SCAN_ALLOC_HUGE_PAGE_FAIL, "alloc_huge_page_failed") \
EM( SCAN_CGROUP_CHARGE_FAIL, "ccgroup_charge_failed") \
EM( SCAN_EXCEED_SWAP_PTE, "exceed_swap_pte") \
- EMe(SCAN_TRUNCATED, "truncated") \
+ EM( SCAN_TRUNCATED, "truncated") \
+ EMe(SCAN_PAGE_HAS_PRIVATE, "page_has_private") \
#undef EM
#undef EMe
_
