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Date: Tue, 5 Mar 2024 12:37:50 +0800
From: peterx@...hat.com
To: linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Cc: Christophe Leroy <christophe.leroy@...roup.eu>,
x86@...nel.org,
"Kirill A . Shutemov" <kirill@...temov.name>,
Jason Gunthorpe <jgg@...dia.com>,
Yang Shi <shy828301@...il.com>,
peterx@...hat.com,
Andrew Morton <akpm@...ux-foundation.org>,
linuxppc-dev@...ts.ozlabs.org,
Muchun Song <muchun.song@...ux.dev>
Subject: [PATCH v3 10/10] mm/treewide: Align up pXd_leaf() retval across archs
From: Peter Xu <peterx@...hat.com>
Even if pXd_leaf() API is defined globally, it's not clear on the retval,
and there are three types used (bool, int, unsigned log).
Always return a boolean for pXd_leaf() APIs.
Suggested-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Peter Xu <peterx@...hat.com>
---
arch/riscv/include/asm/pgtable-64.h | 2 +-
arch/riscv/include/asm/pgtable.h | 2 +-
arch/s390/include/asm/pgtable.h | 4 ++--
arch/sparc/include/asm/pgtable_64.h | 4 ++--
arch/x86/include/asm/pgtable.h | 8 ++++----
include/linux/pgtable.h | 8 ++++----
6 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/arch/riscv/include/asm/pgtable-64.h b/arch/riscv/include/asm/pgtable-64.h
index b42017d76924..2c7e1661db01 100644
--- a/arch/riscv/include/asm/pgtable-64.h
+++ b/arch/riscv/include/asm/pgtable-64.h
@@ -190,7 +190,7 @@ static inline int pud_bad(pud_t pud)
}
#define pud_leaf pud_leaf
-static inline int pud_leaf(pud_t pud)
+static inline bool pud_leaf(pud_t pud)
{
return pud_present(pud) && (pud_val(pud) & _PAGE_LEAF);
}
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index add5cd30ab34..6839520dbcb1 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -241,7 +241,7 @@ static inline int pmd_bad(pmd_t pmd)
}
#define pmd_leaf pmd_leaf
-static inline int pmd_leaf(pmd_t pmd)
+static inline bool pmd_leaf(pmd_t pmd)
{
return pmd_present(pmd) && (pmd_val(pmd) & _PAGE_LEAF);
}
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 9e08af5b9247..60950e7a25f5 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -706,7 +706,7 @@ static inline int pud_none(pud_t pud)
}
#define pud_leaf pud_leaf
-static inline int pud_leaf(pud_t pud)
+static inline bool pud_leaf(pud_t pud)
{
if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) != _REGION_ENTRY_TYPE_R3)
return 0;
@@ -714,7 +714,7 @@ static inline int pud_leaf(pud_t pud)
}
#define pmd_leaf pmd_leaf
-static inline int pmd_leaf(pmd_t pmd)
+static inline bool pmd_leaf(pmd_t pmd)
{
return (pmd_val(pmd) & _SEGMENT_ENTRY_LARGE) != 0;
}
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 6ff0a28d5fd1..4d1bafaba942 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -681,7 +681,7 @@ static inline unsigned long pte_special(pte_t pte)
}
#define pmd_leaf pmd_leaf
-static inline unsigned long pmd_leaf(pmd_t pmd)
+static inline bool pmd_leaf(pmd_t pmd)
{
pte_t pte = __pte(pmd_val(pmd));
@@ -868,7 +868,7 @@ static inline pmd_t *pud_pgtable(pud_t pud)
#define p4d_page(p4d) NULL
#define pud_leaf pud_leaf
-static inline unsigned long pud_leaf(pud_t pud)
+static inline bool pud_leaf(pud_t pud)
{
pte_t pte = __pte(pud_val(pud));
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index cfc84c55d0e6..7621a5acb13e 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -252,7 +252,7 @@ static inline unsigned long pgd_pfn(pgd_t pgd)
}
#define p4d_leaf p4d_leaf
-static inline int p4d_leaf(p4d_t p4d)
+static inline bool p4d_leaf(p4d_t p4d)
{
/* No 512 GiB pages yet */
return 0;
@@ -261,7 +261,7 @@ static inline int p4d_leaf(p4d_t p4d)
#define pte_page(pte) pfn_to_page(pte_pfn(pte))
#define pmd_leaf pmd_leaf
-static inline int pmd_leaf(pmd_t pte)
+static inline bool pmd_leaf(pmd_t pte)
{
return pmd_flags(pte) & _PAGE_PSE;
}
@@ -1086,7 +1086,7 @@ static inline pmd_t *pud_pgtable(pud_t pud)
#define pud_page(pud) pfn_to_page(pud_pfn(pud))
#define pud_leaf pud_leaf
-static inline int pud_leaf(pud_t pud)
+static inline bool pud_leaf(pud_t pud)
{
return (pud_val(pud) & (_PAGE_PSE | _PAGE_PRESENT)) ==
(_PAGE_PSE | _PAGE_PRESENT);
@@ -1413,7 +1413,7 @@ static inline bool pgdp_maps_userspace(void *__ptr)
}
#define pgd_leaf pgd_leaf
-static inline int pgd_leaf(pgd_t pgd) { return 0; }
+static inline bool pgd_leaf(pgd_t pgd) { return false; }
#ifdef CONFIG_PAGE_TABLE_ISOLATION
/*
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index a36cf4e124b0..85fc7554cd52 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1777,16 +1777,16 @@ typedef unsigned int pgtbl_mod_mask;
* Only meaningful when called on a valid entry.
*/
#ifndef pgd_leaf
-#define pgd_leaf(x) 0
+#define pgd_leaf(x) false
#endif
#ifndef p4d_leaf
-#define p4d_leaf(x) 0
+#define p4d_leaf(x) false
#endif
#ifndef pud_leaf
-#define pud_leaf(x) 0
+#define pud_leaf(x) false
#endif
#ifndef pmd_leaf
-#define pmd_leaf(x) 0
+#define pmd_leaf(x) false
#endif
#ifndef pgd_leaf_size
--
2.44.0
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