linux-kernel - [RFC PATCH 5/9] mips: mm: migrate: add pmd swap entry to support thp migration.

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Message-Id: <20180426142804.180152-6-zi.yan@sent.com>
Date:   Thu, 26 Apr 2018 10:28:00 -0400
From:   Zi Yan <zi.yan@...t.com>
To:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     Zi Yan <zi.yan@...rutgers.edu>, Ralf Baechle <ralf@...ux-mips.org>,
        James Hogan <jhogan@...nel.org>,
        Michal Hocko <mhocko@...e.com>, Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-mips@...ux-mips.org
Subject: [RFC PATCH 5/9] mips: mm: migrate: add pmd swap entry to support thp migration.

From: Zi Yan <zi.yan@...rutgers.edu>

Signed-off-by: Zi Yan <zi.yan@...rutgers.edu>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: James Hogan <jhogan@...nel.org>
Cc: Michal Hocko <mhocko@...e.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mips@...ux-mips.org
Cc: linux-mm@...ck.org
---
 arch/mips/include/asm/pgtable-64.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h
index 0036ea0c7173..ec72e5b12965 100644
--- a/arch/mips/include/asm/pgtable-64.h
+++ b/arch/mips/include/asm/pgtable-64.h
@@ -366,6 +366,8 @@ static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset)
 #define __swp_offset(x)		((x).val >> 24)
 #define __swp_entry(type, offset) ((swp_entry_t) { pte_val(mk_swap_pte((type), (offset))) })
 #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
+#define __pmd_to_swp_entry(pmd) ((swp_entry_t) { pmd_val(pmd) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
+#define __swp_entry_to_pmd(x)	((pmd_t) { (x).val })
 
 #endif /* _ASM_PGTABLE_64_H */
-- 
2.17.0