From: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@kvack.org, linux-arch@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org,
linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev,
linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org,
linux-openrisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
linux-um@lists.infradead.org, xen-devel@lists.xenproject.org,
kvm@vger.kernel.org,
"Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Subject: [PATCH v2 34/34] mm: Remove pgtable_{pmd, pte}_page_{ctor, dtor}() wrappers
Date: Mon, 1 May 2023 12:28:29 -0700 [thread overview]
Message-ID: <20230501192829.17086-35-vishal.moola@gmail.com> (raw)
In-Reply-To: <20230501192829.17086-1-vishal.moola@gmail.com>
These functions are no longer necessary. Remove them and cleanup
Documentation referencing them.
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
---
Documentation/mm/split_page_table_lock.rst | 12 +++++------
.../zh_CN/mm/split_page_table_lock.rst | 14 ++++++-------
include/linux/mm.h | 20 -------------------
3 files changed, 13 insertions(+), 33 deletions(-)
diff --git a/Documentation/mm/split_page_table_lock.rst b/Documentation/mm/split_page_table_lock.rst
index 50ee0dfc95be..b3c612183135 100644
--- a/Documentation/mm/split_page_table_lock.rst
+++ b/Documentation/mm/split_page_table_lock.rst
@@ -53,7 +53,7 @@ Support of split page table lock by an architecture
===================================================
There's no need in special enabling of PTE split page table lock: everything
-required is done by pgtable_pte_page_ctor() and pgtable_pte_page_dtor(), which
+required is done by ptdesc_pte_ctor() and ptdesc_pte_dtor(), which
must be called on PTE table allocation / freeing.
Make sure the architecture doesn't use slab allocator for page table
@@ -63,8 +63,8 @@ This field shares storage with page->ptl.
PMD split lock only makes sense if you have more than two page table
levels.
-PMD split lock enabling requires pgtable_pmd_page_ctor() call on PMD table
-allocation and pgtable_pmd_page_dtor() on freeing.
+PMD split lock enabling requires ptdesc_pmd_ctor() call on PMD table
+allocation and ptdesc_pmd_dtor() on freeing.
Allocation usually happens in pmd_alloc_one(), freeing in pmd_free() and
pmd_free_tlb(), but make sure you cover all PMD table allocation / freeing
@@ -72,7 +72,7 @@ paths: i.e X86_PAE preallocate few PMDs on pgd_alloc().
With everything in place you can set CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK.
-NOTE: pgtable_pte_page_ctor() and pgtable_pmd_page_ctor() can fail -- it must
+NOTE: ptdesc_pte_ctor() and ptdesc_pmd_ctor() can fail -- it must
be handled properly.
page->ptl
@@ -92,7 +92,7 @@ trick:
split lock with enabled DEBUG_SPINLOCK or DEBUG_LOCK_ALLOC, but costs
one more cache line for indirect access;
-The spinlock_t allocated in pgtable_pte_page_ctor() for PTE table and in
-pgtable_pmd_page_ctor() for PMD table.
+The spinlock_t allocated in ptdesc_pte_ctor() for PTE table and in
+ptdesc_pmd_ctor() for PMD table.
Please, never access page->ptl directly -- use appropriate helper.
diff --git a/Documentation/translations/zh_CN/mm/split_page_table_lock.rst b/Documentation/translations/zh_CN/mm/split_page_table_lock.rst
index 4fb7aa666037..a3323eb9dc40 100644
--- a/Documentation/translations/zh_CN/mm/split_page_table_lock.rst
+++ b/Documentation/translations/zh_CN/mm/split_page_table_lock.rst
@@ -56,16 +56,16 @@ Hugetlb特定的辅助函数:
架构对分页表锁的支持
====================
-没有必要特别启用PTE分页表锁:所有需要的东西都由pgtable_pte_page_ctor()
-和pgtable_pte_page_dtor()完成,它们必须在PTE表分配/释放时被调用。
+没有必要特别启用PTE分页表锁:所有需要的东西都由ptdesc_pte_ctor()
+和ptdesc_pte_dtor()完成,它们必须在PTE表分配/释放时被调用。
确保架构不使用slab分配器来分配页表:slab使用page->slab_cache来分配其页
面。这个区域与page->ptl共享存储。
PMD分页锁只有在你有两个以上的页表级别时才有意义。
-启用PMD分页锁需要在PMD表分配时调用pgtable_pmd_page_ctor(),在释放时调
-用pgtable_pmd_page_dtor()。
+启用PMD分页锁需要在PMD表分配时调用ptdesc_pmd_ctor(),在释放时调
+用ptdesc_pmd_dtor()。
分配通常发生在pmd_alloc_one()中,释放发生在pmd_free()和pmd_free_tlb()
中,但要确保覆盖所有的PMD表分配/释放路径:即X86_PAE在pgd_alloc()中预先
@@ -73,7 +73,7 @@ PMD分页锁只有在你有两个以上的页表级别时才有意义。
一切就绪后,你可以设置CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK。
-注意:pgtable_pte_page_ctor()和pgtable_pmd_page_ctor()可能失败--必
+注意:ptdesc_pte_ctor()和ptdesc_pmd_ctor()可能失败--必
须正确处理。
page->ptl
@@ -90,7 +90,7 @@ page->ptl用于访问分割页表锁,其中'page'是包含该表的页面struc
的指针并动态分配它。这允许在启用DEBUG_SPINLOCK或DEBUG_LOCK_ALLOC的
情况下使用分页锁,但由于间接访问而多花了一个缓存行。
-PTE表的spinlock_t分配在pgtable_pte_page_ctor()中,PMD表的spinlock_t
-分配在pgtable_pmd_page_ctor()中。
+PTE表的spinlock_t分配在ptdesc_pte_ctor()中,PMD表的spinlock_t
+分配在ptdesc_pmd_ctor()中。
请不要直接访问page->ptl - -使用适当的辅助函数。
diff --git a/include/linux/mm.h b/include/linux/mm.h
index dc61aeca9077..dfa3e202099a 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2858,11 +2858,6 @@ static inline bool ptdesc_pte_ctor(struct ptdesc *ptdesc)
return true;
}
-static inline bool pgtable_pte_page_ctor(struct page *page)
-{
- return ptdesc_pte_ctor(page_ptdesc(page));
-}
-
static inline void ptdesc_pte_dtor(struct ptdesc *ptdesc)
{
struct folio *folio = ptdesc_folio(ptdesc);
@@ -2872,11 +2867,6 @@ static inline void ptdesc_pte_dtor(struct ptdesc *ptdesc)
lruvec_stat_sub_folio(folio, NR_PAGETABLE);
}
-static inline void pgtable_pte_page_dtor(struct page *page)
-{
- ptdesc_pte_dtor(page_ptdesc(page));
-}
-
#define pte_offset_map_lock(mm, pmd, address, ptlp) \
({ \
spinlock_t *__ptl = pte_lockptr(mm, pmd); \
@@ -2967,11 +2957,6 @@ static inline bool ptdesc_pmd_ctor(struct ptdesc *ptdesc)
return true;
}
-static inline bool pgtable_pmd_page_ctor(struct page *page)
-{
- return ptdesc_pmd_ctor(page_ptdesc(page));
-}
-
static inline void ptdesc_pmd_dtor(struct ptdesc *ptdesc)
{
struct folio *folio = ptdesc_folio(ptdesc);
@@ -2981,11 +2966,6 @@ static inline void ptdesc_pmd_dtor(struct ptdesc *ptdesc)
lruvec_stat_sub_folio(folio, NR_PAGETABLE);
}
-static inline void pgtable_pmd_page_dtor(struct page *page)
-{
- ptdesc_pmd_dtor(page_ptdesc(page));
-}
-
/*
* No scalability reason to split PUD locks yet, but follow the same pattern
* as the PMD locks to make it easier if we decide to. The VM should not be
--
2.39.2
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next prev parent reply other threads:[~2023-05-01 19:47 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-01 19:27 [PATCH v2 00/34] Split ptdesc from struct page Vishal Moola (Oracle)
2023-05-01 19:27 ` [PATCH v2 01/34] mm: Add PAGE_TYPE_OP folio functions Vishal Moola (Oracle)
2023-05-25 8:55 ` Mike Rapoport
2023-05-25 17:00 ` Vishal Moola
2023-05-25 20:20 ` Mike Rapoport
2023-05-25 20:38 ` Vishal Moola
2023-05-25 20:57 ` Matthew Wilcox
2023-05-01 19:27 ` [PATCH v2 02/34] s390: Use _pt_s390_gaddr for gmap address tracking Vishal Moola (Oracle)
2023-05-25 8:58 ` Mike Rapoport
2023-05-25 17:12 ` Vishal Moola
2023-05-01 19:27 ` [PATCH v2 03/34] s390: Use pt_frag_refcount for pagetables Vishal Moola (Oracle)
2023-05-01 19:27 ` [PATCH v2 04/34] pgtable: Create struct ptdesc Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 05/34] mm: add utility functions for ptdesc Vishal Moola (Oracle)
2023-05-25 9:09 ` Mike Rapoport
2023-05-25 18:04 ` Vishal Moola
2023-05-25 20:25 ` Mike Rapoport
2023-05-25 20:53 ` Vishal Moola
2023-05-27 10:41 ` Mike Rapoport
2023-05-27 15:09 ` Matthew Wilcox
2023-05-28 5:47 ` Mike Rapoport
2023-05-01 19:28 ` [PATCH v2 06/34] mm: Convert pmd_pgtable_page() to pmd_ptdesc() Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 07/34] mm: Convert ptlock_alloc() to use ptdescs Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 08/34] mm: Convert ptlock_ptr() " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 09/34] mm: Convert pmd_ptlock_init() " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 10/34] mm: Convert ptlock_init() " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 11/34] mm: Convert pmd_ptlock_free() " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 12/34] mm: Convert ptlock_free() " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 13/34] mm: Create ptdesc equivalents for pgtable_{pte,pmd}_page_{ctor,dtor} Vishal Moola (Oracle)
2023-05-25 9:19 ` Mike Rapoport
2023-05-25 18:17 ` Vishal Moola
2023-05-01 19:28 ` [PATCH v2 14/34] powerpc: Convert various functions to use ptdescs Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 15/34] x86: " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 16/34] s390: Convert various gmap " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 17/34] s390: Convert various pgalloc " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 18/34] mm: Remove page table members from struct page Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 19/34] pgalloc: Convert various functions to use ptdescs Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 20/34] arm: " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 21/34] arm64: " Vishal Moola (Oracle)
2023-05-02 1:48 ` kernel test robot
2023-05-02 2:21 ` kernel test robot
2023-05-01 19:28 ` [PATCH v2 22/34] csky: Convert __pte_free_tlb() " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 23/34] hexagon: " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 24/34] loongarch: Convert various functions " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 25/34] m68k: " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 26/34] mips: " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 27/34] nios2: Convert __pte_free_tlb() " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 28/34] openrisc: " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 29/34] riscv: Convert alloc_{pmd, pte}_late() " Vishal Moola (Oracle)
2023-05-01 20:59 ` Palmer Dabbelt
2023-05-01 19:28 ` [PATCH v2 30/34] sh: Convert pte_free_tlb() " Vishal Moola (Oracle)
2023-05-06 11:35 ` John Paul Adrian Glaubitz
2023-05-15 19:11 ` Vishal Moola
2023-05-01 19:28 ` [PATCH v2 31/34] sparc64: Convert various functions " Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 32/34] sparc: Convert pgtable_pte_page_{ctor, dtor}() to ptdesc equivalents Vishal Moola (Oracle)
2023-05-01 19:28 ` [PATCH v2 33/34] um: Convert {pmd, pte}_free_tlb() to use ptdescs Vishal Moola (Oracle)
2023-05-01 19:28 ` Vishal Moola (Oracle) [this message]
2023-05-18 12:12 ` [PATCH v2 00/34] Split ptdesc from struct page Jason Gunthorpe
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