[PATCH v2 13/14] mm/arm: Remove pmd_thp_or_huge()

peterx
2024-03-18T20:04:29Z

ARM/ARM64 used to define pmd_thp_or_huge(). Now this macro is completely
redundant. Remove it and use pmd_leaf().

Cc: Mark Salter <msalter@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: Fabio Estevam <festevam@denx.de>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Peter Xu <peterx@redhat.com>
---
arch/arm/include/asm/pgtable-2level.h | 1 -
arch/arm/include/asm/pgtable-3level.h | 1 -
arch/arm/lib/uaccess_with_memcpy.c | 4 ++--
arch/arm64/include/asm/pgtable.h | 2 --
4 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
index 4245c2e74720..6b5392e20f41 100644
--- a/arch/arm/include/asm/pgtable-2level.h
+++ b/arch/arm/include/asm/pgtable-2level.h
@@ -241,7 +241,6 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
* define empty stubs for use by pin_page_for_write.
*/
#define pmd_hugewillfault(pmd) (0)
-#define pmd_thp_or_huge(pmd) (0)

#endif /* __ASSEMBLY__ */

diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 9e3c44f0aea2..fa5939eb9864 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -190,7 +190,6 @@ static inline pte_t pte_mkspecial(pte_t pte)
#define pmd_dirty(pmd) (pmd_isset((pmd), L_PMD_SECT_DIRTY))

#define pmd_hugewillfault(pmd) (!pmd_young(pmd) || !pmd_write(pmd))
-#define pmd_thp_or_huge(pmd) (pmd_leaf(pmd) || pmd_trans_huge(pmd))

#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define pmd_trans_huge(pmd) (pmd_val(pmd) && !pmd_table(pmd))
diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c
index 2f6163f05e93..c0ac7796d775 100644
--- a/arch/arm/lib/uaccess_with_memcpy.c
+++ b/arch/arm/lib/uaccess_with_memcpy.c
@@ -56,10 +56,10 @@ pin_page_for_write(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp)
* to see that it's still huge and whether or not we will
* need to fault on write.
*/
- if (unlikely(pmd_thp_or_huge(*pmd))) {
+ if (unlikely(pmd_leaf(*pmd))) {
ptl = &current->mm->page_table_lock;
spin_lock(ptl);
- if (unlikely(!pmd_thp_or_huge(*pmd)
+ if (unlikely(!pmd_leaf(*pmd)
|| pmd_hugewillfault(*pmd))) {
spin_unlock(ptl);
return 0;
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index c4efa47fed5f..a580068a6564 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -512,8 +512,6 @@ static inline pmd_t pmd_mkinvalid(pmd_t pmd)
return pmd;
}

-#define pmd_thp_or_huge(pmd) (pmd_leaf(pmd) || pmd_trans_huge(pmd))
-
#define pmd_write(pmd) pte_write(pmd_pte(pmd))

#define pmd_mkhuge(pmd) (__pmd(pmd_val(pmd) & ~PMD_TABLE_BIT))
--
2.44.0