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Thu, 06 Nov 2025 16:29:25 -0500 X-MC-Unique: WXTMg0QmNGeR0iOyZVa33A-1 X-Mimecast-MFC-AGG-ID: WXTMg0QmNGeR0iOyZVa33A_1762464564 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9F62B180045C; Thu, 6 Nov 2025 21:29:24 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.22.65.101]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 856B319560A7; Thu, 6 Nov 2025 21:29:23 +0000 (UTC) From: Luiz Capitulino To: david@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: ryan.roberts@arm.com, akpm@linux-foundation.org, lorenzo.stoakes@oracle.com Subject: [RFC 07/10] treewide: rename has_transparent_hugepage() to arch_has_pmd_leaves() Date: Thu, 6 Nov 2025 16:28:54 -0500 Message-ID: <9b56da53df2f0da40be68de9a7208d527b144afa.1762464515.git.luizcap@redhat.com> In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Content-Type: text/plain; charset="utf-8" Now that the majority of has_transparent_hugepage() callers have been converted to pgtable_has_pmd_leaves(), rename has_transparent_hugepage() to arch_has_pmd_leaves() since that's what the helper checks for. arch_has_pmd_leaves() is supposed to be called only by init_arch_has_pmd_leaves(), except for two exeptions: 1. shmem: shmem code runs very early during boot so it can't use pgtable_has_pmd_leaves() 2. hugepage_init(): just a temporary exception, this function will be converted in a future commit Signed-off-by: Luiz Capitulino --- arch/mips/include/asm/pgtable.h | 4 ++-- arch/mips/mm/tlb-r4k.c | 4 ++-- arch/powerpc/include/asm/book3s/64/hash-4k.h | 2 +- arch/powerpc/include/asm/book3s/64/hash-64k.h | 2 +- arch/powerpc/include/asm/book3s/64/pgtable.h | 10 +++++----- arch/powerpc/include/asm/book3s/64/radix.h | 2 +- arch/powerpc/mm/book3s64/hash_pgtable.c | 4 ++-- arch/s390/include/asm/pgtable.h | 4 ++-- arch/x86/include/asm/pgtable.h | 4 ++-- include/linux/pgtable.h | 4 ++-- mm/huge_memory.c | 2 +- mm/memory.c | 2 +- mm/shmem.c | 6 +++--- 13 files changed, 25 insertions(+), 25 deletions(-) diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtabl= e.h index ae73ecf4c41a..fb9539002392 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -616,8 +616,8 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsi= gned long vaddr, /* We don't have hardware dirty/accessed bits, generic_pmdp_establish is f= ine.*/ #define pmdp_establish generic_pmdp_establish =20 -#define has_transparent_hugepage has_transparent_hugepage -extern int has_transparent_hugepage(void); +#define arch_has_pmd_leaves arch_has_pmd_leaves +extern int arch_has_pmd_leaves(void); =20 static inline int pmd_trans_huge(pmd_t pmd) { diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index 347126dc010d..eb16ddedb40c 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -430,7 +430,7 @@ void add_wired_entry(unsigned long entrylo0, unsigned l= ong entrylo1, =20 #ifdef CONFIG_TRANSPARENT_HUGEPAGE =20 -int has_transparent_hugepage(void) +int arch_has_pmd_leaves(void) { static unsigned int mask =3D -1; =20 @@ -446,7 +446,7 @@ int has_transparent_hugepage(void) } return mask =3D=3D PM_HUGE_MASK; } -EXPORT_SYMBOL(has_transparent_hugepage); +EXPORT_SYMBOL(arch_has_pmd_leaves); =20 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ =20 diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/in= clude/asm/book3s/64/hash-4k.h index 8e5bd9902bed..6744c2287199 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-4k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h @@ -165,7 +165,7 @@ extern void hash__pgtable_trans_huge_deposit(struct mm_= struct *mm, pmd_t *pmdp, extern pgtable_t hash__pgtable_trans_huge_withdraw(struct mm_struct *mm, p= md_t *pmdp); extern pmd_t hash__pmdp_huge_get_and_clear(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp); -extern int hash__has_transparent_hugepage(void); +extern int hash__arch_has_pmd_leaves(void); #endif =20 #endif /* !__ASSEMBLER__ */ diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/i= nclude/asm/book3s/64/hash-64k.h index 7deb3a66890b..9392aba5e5dc 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-64k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h @@ -278,7 +278,7 @@ extern void hash__pgtable_trans_huge_deposit(struct mm_= struct *mm, pmd_t *pmdp, extern pgtable_t hash__pgtable_trans_huge_withdraw(struct mm_struct *mm, p= md_t *pmdp); extern pmd_t hash__pmdp_huge_get_and_clear(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp); -extern int hash__has_transparent_hugepage(void); +extern int hash__arch_has_pmd_leaves(void); #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ =20 #endif /* __ASSEMBLER__ */ diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/in= clude/asm/book3s/64/pgtable.h index aac8ce30cd3b..6ed036b3d3c2 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -1094,14 +1094,14 @@ static inline void update_mmu_cache_pud(struct vm_a= rea_struct *vma, { } =20 -extern int hash__has_transparent_hugepage(void); -static inline int has_transparent_hugepage(void) +extern int hash__arch_has_pmd_leaves(void); +static inline int arch_has_pmd_leaves(void) { if (radix_enabled()) - return radix__has_transparent_hugepage(); - return hash__has_transparent_hugepage(); + return radix__arch_has_pmd_leaves(); + return hash__arch_has_pmd_leaves(); } -#define has_transparent_hugepage has_transparent_hugepage +#define arch_has_pmd_leaves arch_has_pmd_leaves =20 static inline int has_transparent_pud_hugepage(void) { diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/incl= ude/asm/book3s/64/radix.h index da954e779744..c884a119cbd9 100644 --- a/arch/powerpc/include/asm/book3s/64/radix.h +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -298,7 +298,7 @@ extern pmd_t radix__pmdp_huge_get_and_clear(struct mm_s= truct *mm, pud_t radix__pudp_huge_get_and_clear(struct mm_struct *mm, unsigned long addr, pud_t *pudp); =20 -static inline int radix__has_transparent_hugepage(void) +static inline int radix__arch_has_pmd_leaves(void) { /* For radix 2M at PMD level means thp */ if (mmu_psize_defs[MMU_PAGE_2M].shift =3D=3D PMD_SHIFT) diff --git a/arch/powerpc/mm/book3s64/hash_pgtable.c b/arch/powerpc/mm/book= 3s64/hash_pgtable.c index 82d31177630b..1dec64bf0c75 100644 --- a/arch/powerpc/mm/book3s64/hash_pgtable.c +++ b/arch/powerpc/mm/book3s64/hash_pgtable.c @@ -366,7 +366,7 @@ pmd_t hash__pmdp_huge_get_and_clear(struct mm_struct *m= m, return old_pmd; } =20 -int hash__has_transparent_hugepage(void) +int hash__arch_has_pmd_leaves(void) { =20 if (!mmu_has_feature(MMU_FTR_16M_PAGE)) @@ -395,7 +395,7 @@ int hash__has_transparent_hugepage(void) =20 return 1; } -EXPORT_SYMBOL_GPL(hash__has_transparent_hugepage); +EXPORT_SYMBOL_GPL(hash__arch_has_pmd_leaves); =20 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ =20 diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtabl= e.h index b7100c6a4054..68fe444ace56 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -1881,8 +1881,8 @@ static inline int pmd_trans_huge(pmd_t pmd) return pmd_leaf(pmd); } =20 -#define has_transparent_hugepage has_transparent_hugepage -static inline int has_transparent_hugepage(void) +#define arch_has_pmd_leaves arch_has_pmd_leaves +static inline int arch_has_pmd_leaves(void) { return cpu_has_edat1() ? 1 : 0; } diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index e33df3da6980..08d109280e36 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -313,8 +313,8 @@ static inline int pud_trans_huge(pud_t pud) } #endif =20 -#define has_transparent_hugepage has_transparent_hugepage -static inline int has_transparent_hugepage(void) +#define arch_has_pmd_leaves arch_has_pmd_leaves +static inline int arch_has_pmd_leaves(void) { return boot_cpu_has(X86_FEATURE_PSE); } diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index e4c5f70b0a01..02a2772ec548 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -2026,8 +2026,8 @@ static inline bool pgtable_has_pmd_leaves(void) #endif #endif =20 -#ifndef has_transparent_hugepage -#define has_transparent_hugepage() IS_BUILTIN(CONFIG_TRANSPARENT_HUGEPAGE) +#ifndef arch_has_pmd_leaves +#define arch_has_pmd_leaves() IS_BUILTIN(CONFIG_TRANSPARENT_HUGEPAGE) #endif =20 #ifndef has_transparent_pud_hugepage diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 1d1b74950332..9bfa11aa2cbc 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -904,7 +904,7 @@ static int __init hugepage_init(void) int err; struct kobject *hugepage_kobj; =20 - if (!has_transparent_hugepage()) { + if (!arch_has_pmd_leaves()) { transparent_hugepage_flags =3D 1 << TRANSPARENT_HUGEPAGE_UNSUPPORTED; return -EINVAL; } diff --git a/mm/memory.c b/mm/memory.c index 7b50f3ec9b37..6702c9187114 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -181,7 +181,7 @@ EXPORT_SYMBOL(__arch_has_pmd_leaves); =20 static int __init init_arch_has_pmd_leaves(void) { - __arch_has_pmd_leaves =3D has_transparent_hugepage(); + __arch_has_pmd_leaves =3D arch_has_pmd_leaves(); return 0; } early_initcall(init_arch_has_pmd_leaves); diff --git a/mm/shmem.c b/mm/shmem.c index b9081b817d28..48312b7727a7 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -672,7 +672,7 @@ static int shmem_parse_huge(const char *str) else return -EINVAL; =20 - if (!has_transparent_hugepage() && + if (!arch_has_pmd_leaves() && huge !=3D SHMEM_HUGE_NEVER && huge !=3D SHMEM_HUGE_DENY) return -EINVAL; =20 @@ -4646,7 +4646,7 @@ static int shmem_parse_one(struct fs_context *fc, str= uct fs_parameter *param) ctx->huge =3D result.uint_32; if (ctx->huge !=3D SHMEM_HUGE_NEVER && !(IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && - has_transparent_hugepage())) + arch_has_pmd_leaves())) goto unsupported_parameter; ctx->seen |=3D SHMEM_SEEN_HUGE; break; @@ -5430,7 +5430,7 @@ void __init shmem_init(void) #endif =20 #ifdef CONFIG_TRANSPARENT_HUGEPAGE - if (has_transparent_hugepage() && shmem_huge > SHMEM_HUGE_DENY) + if (arch_has_pmd_leaves() && shmem_huge > SHMEM_HUGE_DENY) SHMEM_SB(shm_mnt->mnt_sb)->huge =3D shmem_huge; else shmem_huge =3D SHMEM_HUGE_NEVER; /* just in case it was patched */ --=20 2.51.1