linux-kernel - [PATCH] mm: khugepaged: add trace status description for SCAN_PAGE_HAS

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Date:   Tue, 26 Nov 2019 02:27:08 +0800
From:   Yang Shi <yang.shi@...ux.alibaba.com>
To:     songliubraving@...com, kirill.shutemov@...ux.intel.com,
        akpm@...ux-foundation.org
Cc:     yang.shi@...ux.alibaba.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm: khugepaged: add trace status description for SCAN_PAGE_HAS_PRIVATE

The commit 99cb0dbd47a15d395bf3faa78dc122bc5efe3fc0 ("mm,thp: add
read-only THP support for (non-shmem) FS") instroduced a new khugepaged
scan result: SCAN_PAGE_HAS_PRIVATE, but the corresponding description
for trance events were not added.

Cc: Song Liu <songliubraving@...com>
Cc: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Signed-off-by: Yang Shi <yang.shi@...ux.alibaba.com>
---
 include/trace/events/huge_memory.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/trace/events/huge_memory.h b/include/trace/events/huge_memory.h
index dd4db33..d49fbce 100644
--- a/include/trace/events/huge_memory.h
+++ b/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,	"has_private")			\
 
 #undef EM
 #undef EMe
-- 
1.8.3.1