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Message-ID: <20241007075037.267650-9-osalvador@suse.de>
Date: Mon, 7 Oct 2024 09:50:36 +0200
From: Oscar Salvador <osalvador@...e.de>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
linux-mm@...ck.org,
Peter Xu <peterx@...hat.com>,
Muchun Song <muchun.song@...ux.dev>,
David Hildenbrand <david@...hat.com>,
Donet Tom <donettom@...ux.ibm.com>,
Vlastimil Babka <vbabka@...e.cz>,
Michal Hocko <mhocko@...e.com>,
Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
Oscar Salvador <osalvador@...e.de>
Subject: [PATCH v4 8/9] arch/s390: Clean up hugetlb definitions
s390 redefines functions that are already defined (and the same)
in include/asm-generic/hugetlb.h.
Do as the other architectures: 1) include include/asm-generic/hugetlb.h
2) drop the already defined functions in the generic hugetlb.h and
3) use the __HAVE_ARCH_HUGE_* macros to define our own.
This gets rid of quite some code.
Signed-off-by: Oscar Salvador <osalvador@...e.de>
---
arch/s390/include/asm/hugetlb.h | 58 +++++++++------------------------
include/asm-generic/hugetlb.h | 8 +++++
2 files changed, 24 insertions(+), 42 deletions(-)
diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h
index cf1b5d6fb1a6..37e80a32623a 100644
--- a/arch/s390/include/asm/hugetlb.h
+++ b/arch/s390/include/asm/hugetlb.h
@@ -12,21 +12,24 @@
#include <linux/pgtable.h>
#include <asm/page.h>
-#define hugetlb_free_pgd_range free_pgd_range
#define hugepages_supported() (MACHINE_HAS_EDAT1)
+#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte, unsigned long sz);
void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte);
-pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
-pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
+#define __HAVE_ARCH_HUGE_PTEP_GET
+extern pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
+#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
+extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
unsigned long addr, pte_t *ptep);
/*
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
*/
+#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
static inline int prepare_hugepage_range(struct file *file,
unsigned long addr, unsigned long len)
{
@@ -45,6 +48,7 @@ static inline void arch_clear_hugetlb_flags(struct folio *folio)
}
#define arch_clear_hugetlb_flags arch_clear_hugetlb_flags
+#define __HAVE_ARCH_HUGE_PTE_CLEAR
static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, unsigned long sz)
{
@@ -54,12 +58,14 @@ static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
set_pte(ptep, __pte(_SEGMENT_ENTRY_EMPTY));
}
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
return huge_ptep_get_and_clear(vma->vm_mm, address, ptep);
}
+#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep,
pte_t pte, int dirty)
@@ -72,6 +78,7 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
return changed;
}
+#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
unsigned long addr, pte_t *ptep)
{
@@ -79,69 +86,36 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
__set_huge_pte_at(mm, addr, ptep, pte_wrprotect(pte));
}
-static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
-{
- return mk_pte(page, pgprot);
-}
-
+#define __HAVE_ARCH_HUGE_PTE_NONE
static inline int huge_pte_none(pte_t pte)
{
return pte_none(pte);
}
+#define __HAVE_ARCH_HUGE_PTE_NONE_MOSTLY
static inline int huge_pte_none_mostly(pte_t pte)
{
return huge_pte_none(pte);
}
-static inline int huge_pte_write(pte_t pte)
-{
- return pte_write(pte);
-}
-
-static inline int huge_pte_dirty(pte_t pte)
-{
- return pte_dirty(pte);
-}
-
-static inline pte_t huge_pte_mkwrite(pte_t pte)
-{
- return pte_mkwrite_novma(pte);
-}
-
-static inline pte_t huge_pte_mkdirty(pte_t pte)
-{
- return pte_mkdirty(pte);
-}
-
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
- return pte_wrprotect(pte);
-}
-
-static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
-{
- return pte_modify(pte, newprot);
-}
-
+#define __HAVE_ARCH_HUGE_PTE_MKUFFD_WP
static inline pte_t huge_pte_mkuffd_wp(pte_t pte)
{
return pte;
}
+#define __HAVE_ARCH_HUGE_PTE_CLEAR_UFFD_WP
static inline pte_t huge_pte_clear_uffd_wp(pte_t pte)
{
return pte;
}
+#define __HAVE_ARCH_HUGE_PTE_UFFD_WP
static inline int huge_pte_uffd_wp(pte_t pte)
{
return 0;
}
-static inline bool gigantic_page_runtime_supported(void)
-{
- return true;
-}
+#include <asm-generic/hugetlb.h>
#endif /* _ASM_S390_HUGETLB_H */
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index 594d5905f615..67bbdafcfc22 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -42,20 +42,26 @@ static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
return pte_modify(pte, newprot);
}
+#ifndef __HAVE_ARCH_HUGE_PTE_MKUFFD_WP
static inline pte_t huge_pte_mkuffd_wp(pte_t pte)
{
return huge_pte_wrprotect(pte_mkuffd_wp(pte));
}
+#endif
+#ifndef __HAVE_ARCH_HUGE_PTE_CLEAR_UFFD_WP
static inline pte_t huge_pte_clear_uffd_wp(pte_t pte)
{
return pte_clear_uffd_wp(pte);
}
+#endif
+#ifndef __HAVE_ARCH_HUGE_PTE_UFFD_WP
static inline int huge_pte_uffd_wp(pte_t pte)
{
return pte_uffd_wp(pte);
}
+#endif
#ifndef __HAVE_ARCH_HUGE_PTE_CLEAR
static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
@@ -106,10 +112,12 @@ static inline int huge_pte_none(pte_t pte)
#endif
/* Please refer to comments above pte_none_mostly() for the usage */
+#ifndef __HAVE_ARCH_HUGE_PTE_NONE_MOSTLY
static inline int huge_pte_none_mostly(pte_t pte)
{
return huge_pte_none(pte) || is_pte_marker(pte);
}
+#endif
#ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
static inline int prepare_hugepage_range(struct file *file,
--
2.46.1
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