From 973bf6800cf37802ca48292378d574f2a689de9b Mon Sep 17 00:00:00 2001
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Date: Tue, 25 Jul 2023 00:37:51 +0530
Subject: mm: add pud_same similar to __HAVE_ARCH_P4D_SAME

This helps architectures to override pmd_same and pud_same independently.

Link: https://lkml.kernel.org/r/20230724190759.483013-6-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 include/linux/pgtable.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'include/linux/pgtable.h')

diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 124427ece520..0af8bc4ce258 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -699,11 +699,14 @@ static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b)
 {
 	return pmd_val(pmd_a) == pmd_val(pmd_b);
 }
+#endif
 
+#ifndef pud_same
 static inline int pud_same(pud_t pud_a, pud_t pud_b)
 {
 	return pud_val(pud_a) == pud_val(pud_b);
 }
+#define pud_same pud_same
 #endif
 
 #ifndef __HAVE_ARCH_P4D_SAME
-- 
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