From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Russell King <rmk@arm.linux.org.uk>,
David Howells <dhowells@redhat.com>,
Ralf Baechle <ralf@linux-mips.org>,
David Miller <davem@davemloft.net>,
Paul Mackerras <paulus@samba.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Hugh Dickins <hughd@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-arch@vger.kernel.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [RFC][PATCH 6/6] mm: Remove pte_*map_nested()
Date: Thu, 19 Aug 2010 22:13:23 +0200 [thread overview]
Message-ID: <20100819202753.897737681@chello.nl> (raw)
In-Reply-To: 20100819201317.673172547@chello.nl
[-- Attachment #1: kmap-pte_nest.patch --]
[-- Type: text/plain, Size: 22745 bytes --]
Since we no longer need to provide KM_type, the whole pte_*map_nested()
API is now redundant, remove it.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
arch/alpha/include/asm/pgtable.h | 2 --
arch/arm/include/asm/pgtable.h | 2 --
arch/arm/mm/fault-armv.c | 4 ++--
arch/arm/mm/pgd.c | 4 ++--
arch/avr32/include/asm/pgtable.h | 2 --
arch/cris/include/asm/pgtable.h | 2 --
arch/frv/include/asm/pgtable.h | 5 -----
arch/ia64/include/asm/pgtable.h | 2 --
arch/m32r/include/asm/pgtable.h | 2 --
arch/m68k/include/asm/motorola_pgtable.h | 2 --
arch/m68k/include/asm/sun3_pgtable.h | 2 --
arch/microblaze/include/asm/pgtable.h | 3 ---
arch/mips/include/asm/pgtable-32.h | 3 ---
arch/mips/include/asm/pgtable-64.h | 3 ---
arch/mn10300/include/asm/pgtable.h | 2 --
arch/parisc/include/asm/pgtable.h | 2 --
arch/powerpc/include/asm/pgtable-ppc32.h | 4 ----
arch/powerpc/include/asm/pgtable-ppc64.h | 2 --
arch/s390/include/asm/pgtable.h | 2 --
arch/score/include/asm/pgtable.h | 3 ---
arch/sh/include/asm/pgtable_32.h | 3 ---
arch/sh/include/asm/pgtable_64.h | 2 --
arch/sparc/include/asm/pgtable_32.h | 3 ---
arch/sparc/include/asm/pgtable_64.h | 2 --
arch/um/include/asm/pgtable.h | 2 --
arch/x86/include/asm/pgtable_32.h | 6 ------
arch/x86/include/asm/pgtable_64.h | 2 --
arch/xtensa/include/asm/pgtable.h | 3 ---
mm/memory.c | 4 ++--
mm/mremap.c | 4 ++--
30 files changed, 8 insertions(+), 76 deletions(-)
Index: linux-2.6/arch/alpha/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/alpha/include/asm/pgtable.h
+++ linux-2.6/arch/alpha/include/asm/pgtable.h
@@ -318,9 +318,7 @@ extern inline pte_t * pte_offset_kernel(
}
#define pte_offset_map(dir,addr) pte_offset_kernel((dir),(addr))
-#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir),(addr))
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
extern pgd_t swapper_pg_dir[1024];
Index: linux-2.6/arch/arm/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/arm/include/asm/pgtable.h
+++ linux-2.6/arch/arm/include/asm/pgtable.h
@@ -264,9 +264,7 @@ extern struct page *empty_zero_page;
#define pte_offset_kernel(dir,addr) (pmd_page_vaddr(*(dir)) + __pte_index(addr))
#define pte_offset_map(dir,addr) (__pte_map(dir) + __pte_index(addr))
-#define pte_offset_map_nested(dir,addr) (__pte_map(dir) + __pte_index(addr))
#define pte_unmap(pte) __pte_unmap(pte)
-#define pte_unmap_nested(pte) __pte_unmap(pte)
#ifndef CONFIG_HIGHPTE
#define __pte_map(dir) pmd_page_vaddr(*(dir))
Index: linux-2.6/arch/arm/mm/fault-armv.c
===================================================================
--- linux-2.6.orig/arch/arm/mm/fault-armv.c
+++ linux-2.6/arch/arm/mm/fault-armv.c
@@ -88,13 +88,13 @@ static int adjust_pte(struct vm_area_str
* open-code the spin-locking.
*/
ptl = pte_lockptr(vma->vm_mm, pmd);
- pte = pte_offset_map_nested(pmd, address);
+ pte = pte_offset_map(pmd, address);
spin_lock(ptl);
ret = do_adjust_pte(vma, address, pfn, pte);
spin_unlock(ptl);
- pte_unmap_nested(pte);
+ pte_unmap(pte);
return ret;
}
Index: linux-2.6/arch/arm/mm/pgd.c
===================================================================
--- linux-2.6.orig/arch/arm/mm/pgd.c
+++ linux-2.6/arch/arm/mm/pgd.c
@@ -57,9 +57,9 @@ pgd_t *get_pgd_slow(struct mm_struct *mm
goto no_pte;
init_pmd = pmd_offset(init_pgd, 0);
- init_pte = pte_offset_map_nested(init_pmd, 0);
+ init_pte = pte_offset_map(init_pmd, 0);
set_pte_ext(new_pte, *init_pte, 0);
- pte_unmap_nested(init_pte);
+ pte_unmap(init_pte);
pte_unmap(new_pte);
}
Index: linux-2.6/arch/avr32/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/avr32/include/asm/pgtable.h
+++ linux-2.6/arch/avr32/include/asm/pgtable.h
@@ -319,9 +319,7 @@ static inline pte_t pte_modify(pte_t pte
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
-#define pte_offset_map_nested(dir, address) pte_offset_kernel(dir, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
struct vm_area_struct;
extern void update_mmu_cache(struct vm_area_struct * vma,
Index: linux-2.6/arch/cris/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/cris/include/asm/pgtable.h
+++ linux-2.6/arch/cris/include/asm/pgtable.h
@@ -248,10 +248,8 @@ static inline pgd_t * pgd_offset(const s
((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#define pte_pfn(x) ((unsigned long)(__va((x).pte)) >> PAGE_SHIFT)
#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
Index: linux-2.6/arch/frv/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/frv/include/asm/pgtable.h
+++ linux-2.6/arch/frv/include/asm/pgtable.h
@@ -452,16 +452,11 @@ static inline pte_t pte_modify(pte_t pte
#if defined(CONFIG_HIGHPTE)
#define pte_offset_map(dir, address) \
((pte_t *)kmap_atomic(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)kmap_atomic(pmd_page(*(dir))) + pte_index(address))
#define pte_unmap(pte) kunmap_atomic(pte)
-#define pte_unmap_nested(pte) kunmap_atomic((pte))
#else
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map((dir), (address))
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#endif
/*
Index: linux-2.6/arch/ia64/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/ia64/include/asm/pgtable.h
+++ linux-2.6/arch/ia64/include/asm/pgtable.h
@@ -406,9 +406,7 @@ pgd_offset (const struct mm_struct *mm,
#define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir,addr) ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(addr))
#define pte_offset_map(dir,addr) pte_offset_kernel(dir, addr)
-#define pte_offset_map_nested(dir,addr) pte_offset_map(dir, addr)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/* atomic versions of the some PTE manipulations: */
Index: linux-2.6/arch/m32r/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/m32r/include/asm/pgtable.h
+++ linux-2.6/arch/m32r/include/asm/pgtable.h
@@ -332,9 +332,7 @@ static inline void pmd_set(pmd_t * pmdp,
((pte_t *)pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/* Encode and de-code a swap entry */
#define __swp_type(x) (((x).val >> 2) & 0x1f)
Index: linux-2.6/arch/m68k/include/asm/motorola_pgtable.h
===================================================================
--- linux-2.6.orig/arch/m68k/include/asm/motorola_pgtable.h
+++ linux-2.6/arch/m68k/include/asm/motorola_pgtable.h
@@ -221,9 +221,7 @@ static inline pte_t *pte_offset_kernel(p
}
#define pte_offset_map(pmdp,address) ((pte_t *)__pmd_page(*pmdp) + (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
-#define pte_offset_map_nested(pmdp, address) pte_offset_map(pmdp, address)
#define pte_unmap(pte) ((void)0)
-#define pte_unmap_nested(pte) ((void)0)
/*
* Allocate and free page tables. The xxx_kernel() versions are
Index: linux-2.6/arch/m68k/include/asm/sun3_pgtable.h
===================================================================
--- linux-2.6.orig/arch/m68k/include/asm/sun3_pgtable.h
+++ linux-2.6/arch/m68k/include/asm/sun3_pgtable.h
@@ -219,9 +219,7 @@ static inline pte_t pgoff_to_pte(unsigne
#define pte_offset_kernel(pmd, address) ((pte_t *) __pmd_page(*pmd) + pte_index(address))
/* FIXME: should we bother with kmap() here? */
#define pte_offset_map(pmd, address) ((pte_t *)kmap(pmd_page(*pmd)) + pte_index(address))
-#define pte_offset_map_nested(pmd, address) pte_offset_map(pmd, address)
#define pte_unmap(pte) kunmap(pte)
-#define pte_unmap_nested(pte) kunmap(pte)
/* Macros to (de)construct the fake PTEs representing swap pages. */
#define __swp_type(x) ((x).val & 0x7F)
Index: linux-2.6/arch/microblaze/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/microblaze/include/asm/pgtable.h
+++ linux-2.6/arch/microblaze/include/asm/pgtable.h
@@ -498,11 +498,8 @@ static inline pmd_t *pmd_offset(pgd_t *d
((pte_t *) pmd_page_kernel(*(dir)) + pte_index(addr))
#define pte_offset_map(dir, addr) \
((pte_t *) kmap_atomic(pmd_page(*(dir))) + pte_index(addr))
-#define pte_offset_map_nested(dir, addr) \
- ((pte_t *) kmap_atomic(pmd_page(*(dir))) + pte_index(addr))
#define pte_unmap(pte) kunmap_atomic(pte)
-#define pte_unmap_nested(pte) kunmap_atomic(pte)
/* Encode and decode a nonlinear file mapping entry */
#define PTE_FILE_MAX_BITS 29
Index: linux-2.6/arch/mips/include/asm/pgtable-32.h
===================================================================
--- linux-2.6.orig/arch/mips/include/asm/pgtable-32.h
+++ linux-2.6/arch/mips/include/asm/pgtable-32.h
@@ -154,10 +154,7 @@ pfn_pte(unsigned long pfn, pgprot_t prot
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_unmap(pte) ((void)(pte))
-#define pte_unmap_nested(pte) ((void)(pte))
#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
Index: linux-2.6/arch/mips/include/asm/pgtable-64.h
===================================================================
--- linux-2.6.orig/arch/mips/include/asm/pgtable-64.h
+++ linux-2.6/arch/mips/include/asm/pgtable-64.h
@@ -257,10 +257,7 @@ static inline pmd_t *pmd_offset(pud_t *
((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_unmap(pte) ((void)(pte))
-#define pte_unmap_nested(pte) ((void)(pte))
/*
* Initialize a new pgd / pmd table with invalid pointers.
Index: linux-2.6/arch/mn10300/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/mn10300/include/asm/pgtable.h
+++ linux-2.6/arch/mn10300/include/asm/pgtable.h
@@ -457,9 +457,7 @@ static inline int set_kernel_exec(unsign
#define pte_offset_map(dir, address) \
((pte_t *) page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pte_unmap(pte) do {} while (0)
-#define pte_unmap_nested(pte) do {} while (0)
/*
* The MN10300 has external MMU info in the form of a TLB: this is adapted from
Index: linux-2.6/arch/parisc/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/parisc/include/asm/pgtable.h
+++ linux-2.6/arch/parisc/include/asm/pgtable.h
@@ -397,9 +397,7 @@ static inline pte_t pte_modify(pte_t pte
#define pte_offset_kernel(pmd, address) \
((pte_t *) pmd_page_vaddr(*(pmd)) + pte_index(address))
#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
-#define pte_offset_map_nested(pmd, address) pte_offset_kernel(pmd, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#define pte_unmap(pte) do { } while (0)
#define pte_unmap_nested(pte) do { } while (0)
Index: linux-2.6/arch/powerpc/include/asm/pgtable-ppc32.h
===================================================================
--- linux-2.6.orig/arch/powerpc/include/asm/pgtable-ppc32.h
+++ linux-2.6/arch/powerpc/include/asm/pgtable-ppc32.h
@@ -309,11 +309,7 @@ static inline void __ptep_set_access_fla
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(addr))
#define pte_offset_map(dir, addr) \
((pte_t *) kmap_atomic(pmd_page(*(dir))) + pte_index(addr))
-#define pte_offset_map_nested(dir, addr) \
- ((pte_t *) kmap_atomic(pmd_page(*(dir))) + pte_index(addr))
-
#define pte_unmap(pte) kunmap_atomic(pte)
-#define pte_unmap_nested(pte) kunmap_atomic(pte)
/*
* Encode and decode a swap entry.
Index: linux-2.6/arch/powerpc/include/asm/pgtable-ppc64.h
===================================================================
--- linux-2.6.orig/arch/powerpc/include/asm/pgtable-ppc64.h
+++ linux-2.6/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -193,9 +193,7 @@
(((pte_t *) pmd_page_vaddr(*(dir))) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
#define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr))
-#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir), (addr))
#define pte_unmap(pte) do { } while(0)
-#define pte_unmap_nested(pte) do { } while(0)
/* to find an entry in a kernel page-table-directory */
/* This now only contains the vmalloc pages */
Index: linux-2.6/arch/s390/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/s390/include/asm/pgtable.h
+++ linux-2.6/arch/s390/include/asm/pgtable.h
@@ -1046,9 +1046,7 @@ static inline pmd_t *pmd_offset(pud_t *p
#define pte_offset(pmd, addr) ((pte_t *) pmd_deref(*(pmd)) + pte_index(addr))
#define pte_offset_kernel(pmd, address) pte_offset(pmd,address)
#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
-#define pte_offset_map_nested(pmd, address) pte_offset_kernel(pmd, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/*
* 31 bit swap entry format:
Index: linux-2.6/arch/score/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/score/include/asm/pgtable.h
+++ linux-2.6/arch/score/include/asm/pgtable.h
@@ -88,10 +88,7 @@ static inline void pmd_clear(pmd_t *pmdp
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_unmap(pte) ((void)(pte))
-#define pte_unmap_nested(pte) ((void)(pte))
/*
* Bits 9(_PAGE_PRESENT) and 10(_PAGE_FILE)are taken,
Index: linux-2.6/arch/sh/include/asm/pgtable_32.h
===================================================================
--- linux-2.6.orig/arch/sh/include/asm/pgtable_32.h
+++ linux-2.6/arch/sh/include/asm/pgtable_32.h
@@ -429,10 +429,7 @@ static inline pte_t pte_modify(pte_t pte
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
-#define pte_offset_map_nested(dir, address) pte_offset_kernel(dir, address)
-
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#ifdef CONFIG_X2TLB
#define pte_ERROR(e) \
Index: linux-2.6/arch/sh/include/asm/pgtable_64.h
===================================================================
--- linux-2.6.orig/arch/sh/include/asm/pgtable_64.h
+++ linux-2.6/arch/sh/include/asm/pgtable_64.h
@@ -84,9 +84,7 @@ static __inline__ void set_pte(pte_t *pt
((pte_t *) ((pmd_val(*(dir))) & PAGE_MASK) + pte_index((addr)))
#define pte_offset_map(dir,addr) pte_offset_kernel(dir, addr)
-#define pte_offset_map_nested(dir,addr) pte_offset_kernel(dir, addr)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#ifndef __ASSEMBLY__
#define IOBASE_VADDR 0xff000000
Index: linux-2.6/arch/sparc/include/asm/pgtable_32.h
===================================================================
--- linux-2.6.orig/arch/sparc/include/asm/pgtable_32.h
+++ linux-2.6/arch/sparc/include/asm/pgtable_32.h
@@ -304,10 +304,7 @@ BTFIXUPDEF_CALL(pte_t *, pte_offset_kern
* and sun4c is guaranteed to have no highmem anyway.
*/
#define pte_offset_map(d, a) pte_offset_kernel(d,a)
-#define pte_offset_map_nested(d, a) pte_offset_kernel(d,a)
-
#define pte_unmap(pte) do{}while(0)
-#define pte_unmap_nested(pte) do{}while(0)
/* Certain architectures need to do special things when pte's
* within a page table are directly modified. Thus, the following
Index: linux-2.6/arch/sparc/include/asm/pgtable_64.h
===================================================================
--- linux-2.6.orig/arch/sparc/include/asm/pgtable_64.h
+++ linux-2.6/arch/sparc/include/asm/pgtable_64.h
@@ -652,9 +652,7 @@ static inline int pte_special(pte_t pte)
((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
#define pte_offset_kernel pte_index
#define pte_offset_map pte_index
-#define pte_offset_map_nested pte_index
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/* Actual page table PTE updates. */
extern void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr, pte_t *ptep, pte_t orig);
Index: linux-2.6/arch/um/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/um/include/asm/pgtable.h
+++ linux-2.6/arch/um/include/asm/pgtable.h
@@ -338,9 +338,7 @@ static inline pte_t pte_modify(pte_t pte
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
struct mm_struct;
extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
Index: linux-2.6/arch/x86/include/asm/pgtable_32.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/pgtable_32.h
+++ linux-2.6/arch/x86/include/asm/pgtable_32.h
@@ -52,17 +52,11 @@ extern void set_pmd_pfn(unsigned long, u
#define pte_offset_map(dir, address) \
((pte_t *)kmap_atomic(pmd_page(*(dir))) + \
pte_index((address)))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)kmap_atomic(pmd_page(*(dir))) + \
- pte_index((address)))
#define pte_unmap(pte) kunmap_atomic((pte))
-#define pte_unmap_nested(pte) kunmap_atomic((pte))
#else
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index((address)))
-#define pte_offset_map_nested(dir, address) pte_offset_map((dir), (address))
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#endif
/* Clear a kernel PTE and flush it from the TLB */
Index: linux-2.6/arch/x86/include/asm/pgtable_64.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/pgtable_64.h
+++ linux-2.6/arch/x86/include/asm/pgtable_64.h
@@ -125,9 +125,7 @@ static inline int pgd_large(pgd_t pgd) {
/* x86-64 always has all page tables mapped. */
#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
-#define pte_offset_map_nested(dir, address) pte_offset_kernel((dir), (address))
#define pte_unmap(pte) ((void)(pte))/* NOP */
-#define pte_unmap_nested(pte) ((void)(pte)) /* NOP */
#define update_mmu_cache(vma, address, ptep) do { } while (0)
Index: linux-2.6/arch/xtensa/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/xtensa/include/asm/pgtable.h
+++ linux-2.6/arch/xtensa/include/asm/pgtable.h
@@ -324,10 +324,7 @@ ptep_set_wrprotect(struct mm_struct *mm,
#define pte_offset_kernel(dir,addr) \
((pte_t*) pmd_page_vaddr(*(dir)) + pte_index(addr))
#define pte_offset_map(dir,addr) pte_offset_kernel((dir),(addr))
-#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir),(addr))
-
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/*
Index: linux-2.6/mm/memory.c
===================================================================
--- linux-2.6.orig/mm/memory.c
+++ linux-2.6/mm/memory.c
@@ -736,7 +736,7 @@ again:
dst_pte = pte_alloc_map_lock(dst_mm, dst_pmd, addr, &dst_ptl);
if (!dst_pte)
return -ENOMEM;
- src_pte = pte_offset_map_nested(src_pmd, addr);
+ src_pte = pte_offset_map(src_pmd, addr);
src_ptl = pte_lockptr(src_mm, src_pmd);
spin_lock_nested(src_ptl, SINGLE_DEPTH_NESTING);
orig_src_pte = src_pte;
@@ -767,7 +767,7 @@ again:
arch_leave_lazy_mmu_mode();
spin_unlock(src_ptl);
- pte_unmap_nested(orig_src_pte);
+ pte_unmap(orig_src_pte);
add_mm_rss_vec(dst_mm, rss);
pte_unmap_unlock(orig_dst_pte, dst_ptl);
cond_resched();
Index: linux-2.6/mm/mremap.c
===================================================================
--- linux-2.6.orig/mm/mremap.c
+++ linux-2.6/mm/mremap.c
@@ -101,7 +101,7 @@ static void move_ptes(struct vm_area_str
* pte locks because exclusive mmap_sem prevents deadlock.
*/
old_pte = pte_offset_map_lock(mm, old_pmd, old_addr, &old_ptl);
- new_pte = pte_offset_map_nested(new_pmd, new_addr);
+ new_pte = pte_offset_map(new_pmd, new_addr);
new_ptl = pte_lockptr(mm, new_pmd);
if (new_ptl != old_ptl)
spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
@@ -119,7 +119,7 @@ static void move_ptes(struct vm_area_str
arch_leave_lazy_mmu_mode();
if (new_ptl != old_ptl)
spin_unlock(new_ptl);
- pte_unmap_nested(new_pte - 1);
+ pte_unmap(new_pte - 1);
pte_unmap_unlock(old_pte - 1, old_ptl);
if (mapping)
spin_unlock(&mapping->i_mmap_lock);
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Russell King <rmk@arm.linux.org.uk>,
David Howells <dhowells@redhat.com>,
Ralf Baechle <ralf@linux-mips.org>,
David Miller <davem@davemloft.net>,
Paul Mackerras <paulus@samba.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Hugh Dickins <hughd@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-arch@vger.kernel.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [RFC][PATCH 6/6] mm: Remove pte_*map_nested()
Date: Thu, 19 Aug 2010 22:13:23 +0200 [thread overview]
Message-ID: <20100819202753.897737681@chello.nl> (raw)
In-Reply-To: 20100819201317.673172547@chello.nl
[-- Attachment #1: kmap-pte_nest.patch --]
[-- Type: text/plain, Size: 22970 bytes --]
Since we no longer need to provide KM_type, the whole pte_*map_nested()
API is now redundant, remove it.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
arch/alpha/include/asm/pgtable.h | 2 --
arch/arm/include/asm/pgtable.h | 2 --
arch/arm/mm/fault-armv.c | 4 ++--
arch/arm/mm/pgd.c | 4 ++--
arch/avr32/include/asm/pgtable.h | 2 --
arch/cris/include/asm/pgtable.h | 2 --
arch/frv/include/asm/pgtable.h | 5 -----
arch/ia64/include/asm/pgtable.h | 2 --
arch/m32r/include/asm/pgtable.h | 2 --
arch/m68k/include/asm/motorola_pgtable.h | 2 --
arch/m68k/include/asm/sun3_pgtable.h | 2 --
arch/microblaze/include/asm/pgtable.h | 3 ---
arch/mips/include/asm/pgtable-32.h | 3 ---
arch/mips/include/asm/pgtable-64.h | 3 ---
arch/mn10300/include/asm/pgtable.h | 2 --
arch/parisc/include/asm/pgtable.h | 2 --
arch/powerpc/include/asm/pgtable-ppc32.h | 4 ----
arch/powerpc/include/asm/pgtable-ppc64.h | 2 --
arch/s390/include/asm/pgtable.h | 2 --
arch/score/include/asm/pgtable.h | 3 ---
arch/sh/include/asm/pgtable_32.h | 3 ---
arch/sh/include/asm/pgtable_64.h | 2 --
arch/sparc/include/asm/pgtable_32.h | 3 ---
arch/sparc/include/asm/pgtable_64.h | 2 --
arch/um/include/asm/pgtable.h | 2 --
arch/x86/include/asm/pgtable_32.h | 6 ------
arch/x86/include/asm/pgtable_64.h | 2 --
arch/xtensa/include/asm/pgtable.h | 3 ---
mm/memory.c | 4 ++--
mm/mremap.c | 4 ++--
30 files changed, 8 insertions(+), 76 deletions(-)
Index: linux-2.6/arch/alpha/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/alpha/include/asm/pgtable.h
+++ linux-2.6/arch/alpha/include/asm/pgtable.h
@@ -318,9 +318,7 @@ extern inline pte_t * pte_offset_kernel(
}
#define pte_offset_map(dir,addr) pte_offset_kernel((dir),(addr))
-#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir),(addr))
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
extern pgd_t swapper_pg_dir[1024];
Index: linux-2.6/arch/arm/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/arm/include/asm/pgtable.h
+++ linux-2.6/arch/arm/include/asm/pgtable.h
@@ -264,9 +264,7 @@ extern struct page *empty_zero_page;
#define pte_offset_kernel(dir,addr) (pmd_page_vaddr(*(dir)) + __pte_index(addr))
#define pte_offset_map(dir,addr) (__pte_map(dir) + __pte_index(addr))
-#define pte_offset_map_nested(dir,addr) (__pte_map(dir) + __pte_index(addr))
#define pte_unmap(pte) __pte_unmap(pte)
-#define pte_unmap_nested(pte) __pte_unmap(pte)
#ifndef CONFIG_HIGHPTE
#define __pte_map(dir) pmd_page_vaddr(*(dir))
Index: linux-2.6/arch/arm/mm/fault-armv.c
===================================================================
--- linux-2.6.orig/arch/arm/mm/fault-armv.c
+++ linux-2.6/arch/arm/mm/fault-armv.c
@@ -88,13 +88,13 @@ static int adjust_pte(struct vm_area_str
* open-code the spin-locking.
*/
ptl = pte_lockptr(vma->vm_mm, pmd);
- pte = pte_offset_map_nested(pmd, address);
+ pte = pte_offset_map(pmd, address);
spin_lock(ptl);
ret = do_adjust_pte(vma, address, pfn, pte);
spin_unlock(ptl);
- pte_unmap_nested(pte);
+ pte_unmap(pte);
return ret;
}
Index: linux-2.6/arch/arm/mm/pgd.c
===================================================================
--- linux-2.6.orig/arch/arm/mm/pgd.c
+++ linux-2.6/arch/arm/mm/pgd.c
@@ -57,9 +57,9 @@ pgd_t *get_pgd_slow(struct mm_struct *mm
goto no_pte;
init_pmd = pmd_offset(init_pgd, 0);
- init_pte = pte_offset_map_nested(init_pmd, 0);
+ init_pte = pte_offset_map(init_pmd, 0);
set_pte_ext(new_pte, *init_pte, 0);
- pte_unmap_nested(init_pte);
+ pte_unmap(init_pte);
pte_unmap(new_pte);
}
Index: linux-2.6/arch/avr32/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/avr32/include/asm/pgtable.h
+++ linux-2.6/arch/avr32/include/asm/pgtable.h
@@ -319,9 +319,7 @@ static inline pte_t pte_modify(pte_t pte
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
-#define pte_offset_map_nested(dir, address) pte_offset_kernel(dir, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
struct vm_area_struct;
extern void update_mmu_cache(struct vm_area_struct * vma,
Index: linux-2.6/arch/cris/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/cris/include/asm/pgtable.h
+++ linux-2.6/arch/cris/include/asm/pgtable.h
@@ -248,10 +248,8 @@ static inline pgd_t * pgd_offset(const s
((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#define pte_pfn(x) ((unsigned long)(__va((x).pte)) >> PAGE_SHIFT)
#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
Index: linux-2.6/arch/frv/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/frv/include/asm/pgtable.h
+++ linux-2.6/arch/frv/include/asm/pgtable.h
@@ -452,16 +452,11 @@ static inline pte_t pte_modify(pte_t pte
#if defined(CONFIG_HIGHPTE)
#define pte_offset_map(dir, address) \
((pte_t *)kmap_atomic(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)kmap_atomic(pmd_page(*(dir))) + pte_index(address))
#define pte_unmap(pte) kunmap_atomic(pte)
-#define pte_unmap_nested(pte) kunmap_atomic((pte))
#else
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map((dir), (address))
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#endif
/*
Index: linux-2.6/arch/ia64/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/ia64/include/asm/pgtable.h
+++ linux-2.6/arch/ia64/include/asm/pgtable.h
@@ -406,9 +406,7 @@ pgd_offset (const struct mm_struct *mm,
#define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir,addr) ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(addr))
#define pte_offset_map(dir,addr) pte_offset_kernel(dir, addr)
-#define pte_offset_map_nested(dir,addr) pte_offset_map(dir, addr)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/* atomic versions of the some PTE manipulations: */
Index: linux-2.6/arch/m32r/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/m32r/include/asm/pgtable.h
+++ linux-2.6/arch/m32r/include/asm/pgtable.h
@@ -332,9 +332,7 @@ static inline void pmd_set(pmd_t * pmdp,
((pte_t *)pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/* Encode and de-code a swap entry */
#define __swp_type(x) (((x).val >> 2) & 0x1f)
Index: linux-2.6/arch/m68k/include/asm/motorola_pgtable.h
===================================================================
--- linux-2.6.orig/arch/m68k/include/asm/motorola_pgtable.h
+++ linux-2.6/arch/m68k/include/asm/motorola_pgtable.h
@@ -221,9 +221,7 @@ static inline pte_t *pte_offset_kernel(p
}
#define pte_offset_map(pmdp,address) ((pte_t *)__pmd_page(*pmdp) + (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
-#define pte_offset_map_nested(pmdp, address) pte_offset_map(pmdp, address)
#define pte_unmap(pte) ((void)0)
-#define pte_unmap_nested(pte) ((void)0)
/*
* Allocate and free page tables. The xxx_kernel() versions are
Index: linux-2.6/arch/m68k/include/asm/sun3_pgtable.h
===================================================================
--- linux-2.6.orig/arch/m68k/include/asm/sun3_pgtable.h
+++ linux-2.6/arch/m68k/include/asm/sun3_pgtable.h
@@ -219,9 +219,7 @@ static inline pte_t pgoff_to_pte(unsigne
#define pte_offset_kernel(pmd, address) ((pte_t *) __pmd_page(*pmd) + pte_index(address))
/* FIXME: should we bother with kmap() here? */
#define pte_offset_map(pmd, address) ((pte_t *)kmap(pmd_page(*pmd)) + pte_index(address))
-#define pte_offset_map_nested(pmd, address) pte_offset_map(pmd, address)
#define pte_unmap(pte) kunmap(pte)
-#define pte_unmap_nested(pte) kunmap(pte)
/* Macros to (de)construct the fake PTEs representing swap pages. */
#define __swp_type(x) ((x).val & 0x7F)
Index: linux-2.6/arch/microblaze/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/microblaze/include/asm/pgtable.h
+++ linux-2.6/arch/microblaze/include/asm/pgtable.h
@@ -498,11 +498,8 @@ static inline pmd_t *pmd_offset(pgd_t *d
((pte_t *) pmd_page_kernel(*(dir)) + pte_index(addr))
#define pte_offset_map(dir, addr) \
((pte_t *) kmap_atomic(pmd_page(*(dir))) + pte_index(addr))
-#define pte_offset_map_nested(dir, addr) \
- ((pte_t *) kmap_atomic(pmd_page(*(dir))) + pte_index(addr))
#define pte_unmap(pte) kunmap_atomic(pte)
-#define pte_unmap_nested(pte) kunmap_atomic(pte)
/* Encode and decode a nonlinear file mapping entry */
#define PTE_FILE_MAX_BITS 29
Index: linux-2.6/arch/mips/include/asm/pgtable-32.h
===================================================================
--- linux-2.6.orig/arch/mips/include/asm/pgtable-32.h
+++ linux-2.6/arch/mips/include/asm/pgtable-32.h
@@ -154,10 +154,7 @@ pfn_pte(unsigned long pfn, pgprot_t prot
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_unmap(pte) ((void)(pte))
-#define pte_unmap_nested(pte) ((void)(pte))
#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
Index: linux-2.6/arch/mips/include/asm/pgtable-64.h
===================================================================
--- linux-2.6.orig/arch/mips/include/asm/pgtable-64.h
+++ linux-2.6/arch/mips/include/asm/pgtable-64.h
@@ -257,10 +257,7 @@ static inline pmd_t *pmd_offset(pud_t *
((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_unmap(pte) ((void)(pte))
-#define pte_unmap_nested(pte) ((void)(pte))
/*
* Initialize a new pgd / pmd table with invalid pointers.
Index: linux-2.6/arch/mn10300/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/mn10300/include/asm/pgtable.h
+++ linux-2.6/arch/mn10300/include/asm/pgtable.h
@@ -457,9 +457,7 @@ static inline int set_kernel_exec(unsign
#define pte_offset_map(dir, address) \
((pte_t *) page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pte_unmap(pte) do {} while (0)
-#define pte_unmap_nested(pte) do {} while (0)
/*
* The MN10300 has external MMU info in the form of a TLB: this is adapted from
Index: linux-2.6/arch/parisc/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/parisc/include/asm/pgtable.h
+++ linux-2.6/arch/parisc/include/asm/pgtable.h
@@ -397,9 +397,7 @@ static inline pte_t pte_modify(pte_t pte
#define pte_offset_kernel(pmd, address) \
((pte_t *) pmd_page_vaddr(*(pmd)) + pte_index(address))
#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
-#define pte_offset_map_nested(pmd, address) pte_offset_kernel(pmd, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#define pte_unmap(pte) do { } while (0)
#define pte_unmap_nested(pte) do { } while (0)
Index: linux-2.6/arch/powerpc/include/asm/pgtable-ppc32.h
===================================================================
--- linux-2.6.orig/arch/powerpc/include/asm/pgtable-ppc32.h
+++ linux-2.6/arch/powerpc/include/asm/pgtable-ppc32.h
@@ -309,11 +309,7 @@ static inline void __ptep_set_access_fla
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(addr))
#define pte_offset_map(dir, addr) \
((pte_t *) kmap_atomic(pmd_page(*(dir))) + pte_index(addr))
-#define pte_offset_map_nested(dir, addr) \
- ((pte_t *) kmap_atomic(pmd_page(*(dir))) + pte_index(addr))
-
#define pte_unmap(pte) kunmap_atomic(pte)
-#define pte_unmap_nested(pte) kunmap_atomic(pte)
/*
* Encode and decode a swap entry.
Index: linux-2.6/arch/powerpc/include/asm/pgtable-ppc64.h
===================================================================
--- linux-2.6.orig/arch/powerpc/include/asm/pgtable-ppc64.h
+++ linux-2.6/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -193,9 +193,7 @@
(((pte_t *) pmd_page_vaddr(*(dir))) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
#define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr))
-#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir), (addr))
#define pte_unmap(pte) do { } while(0)
-#define pte_unmap_nested(pte) do { } while(0)
/* to find an entry in a kernel page-table-directory */
/* This now only contains the vmalloc pages */
Index: linux-2.6/arch/s390/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/s390/include/asm/pgtable.h
+++ linux-2.6/arch/s390/include/asm/pgtable.h
@@ -1046,9 +1046,7 @@ static inline pmd_t *pmd_offset(pud_t *p
#define pte_offset(pmd, addr) ((pte_t *) pmd_deref(*(pmd)) + pte_index(addr))
#define pte_offset_kernel(pmd, address) pte_offset(pmd,address)
#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
-#define pte_offset_map_nested(pmd, address) pte_offset_kernel(pmd, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/*
* 31 bit swap entry format:
Index: linux-2.6/arch/score/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/score/include/asm/pgtable.h
+++ linux-2.6/arch/score/include/asm/pgtable.h
@@ -88,10 +88,7 @@ static inline void pmd_clear(pmd_t *pmdp
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_unmap(pte) ((void)(pte))
-#define pte_unmap_nested(pte) ((void)(pte))
/*
* Bits 9(_PAGE_PRESENT) and 10(_PAGE_FILE)are taken,
Index: linux-2.6/arch/sh/include/asm/pgtable_32.h
===================================================================
--- linux-2.6.orig/arch/sh/include/asm/pgtable_32.h
+++ linux-2.6/arch/sh/include/asm/pgtable_32.h
@@ -429,10 +429,7 @@ static inline pte_t pte_modify(pte_t pte
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
-#define pte_offset_map_nested(dir, address) pte_offset_kernel(dir, address)
-
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#ifdef CONFIG_X2TLB
#define pte_ERROR(e) \
Index: linux-2.6/arch/sh/include/asm/pgtable_64.h
===================================================================
--- linux-2.6.orig/arch/sh/include/asm/pgtable_64.h
+++ linux-2.6/arch/sh/include/asm/pgtable_64.h
@@ -84,9 +84,7 @@ static __inline__ void set_pte(pte_t *pt
((pte_t *) ((pmd_val(*(dir))) & PAGE_MASK) + pte_index((addr)))
#define pte_offset_map(dir,addr) pte_offset_kernel(dir, addr)
-#define pte_offset_map_nested(dir,addr) pte_offset_kernel(dir, addr)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#ifndef __ASSEMBLY__
#define IOBASE_VADDR 0xff000000
Index: linux-2.6/arch/sparc/include/asm/pgtable_32.h
===================================================================
--- linux-2.6.orig/arch/sparc/include/asm/pgtable_32.h
+++ linux-2.6/arch/sparc/include/asm/pgtable_32.h
@@ -304,10 +304,7 @@ BTFIXUPDEF_CALL(pte_t *, pte_offset_kern
* and sun4c is guaranteed to have no highmem anyway.
*/
#define pte_offset_map(d, a) pte_offset_kernel(d,a)
-#define pte_offset_map_nested(d, a) pte_offset_kernel(d,a)
-
#define pte_unmap(pte) do{}while(0)
-#define pte_unmap_nested(pte) do{}while(0)
/* Certain architectures need to do special things when pte's
* within a page table are directly modified. Thus, the following
Index: linux-2.6/arch/sparc/include/asm/pgtable_64.h
===================================================================
--- linux-2.6.orig/arch/sparc/include/asm/pgtable_64.h
+++ linux-2.6/arch/sparc/include/asm/pgtable_64.h
@@ -652,9 +652,7 @@ static inline int pte_special(pte_t pte)
((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
#define pte_offset_kernel pte_index
#define pte_offset_map pte_index
-#define pte_offset_map_nested pte_index
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/* Actual page table PTE updates. */
extern void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr, pte_t *ptep, pte_t orig);
Index: linux-2.6/arch/um/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/um/include/asm/pgtable.h
+++ linux-2.6/arch/um/include/asm/pgtable.h
@@ -338,9 +338,7 @@ static inline pte_t pte_modify(pte_t pte
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
struct mm_struct;
extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
Index: linux-2.6/arch/x86/include/asm/pgtable_32.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/pgtable_32.h
+++ linux-2.6/arch/x86/include/asm/pgtable_32.h
@@ -52,17 +52,11 @@ extern void set_pmd_pfn(unsigned long, u
#define pte_offset_map(dir, address) \
((pte_t *)kmap_atomic(pmd_page(*(dir))) + \
pte_index((address)))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)kmap_atomic(pmd_page(*(dir))) + \
- pte_index((address)))
#define pte_unmap(pte) kunmap_atomic((pte))
-#define pte_unmap_nested(pte) kunmap_atomic((pte))
#else
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index((address)))
-#define pte_offset_map_nested(dir, address) pte_offset_map((dir), (address))
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
#endif
/* Clear a kernel PTE and flush it from the TLB */
Index: linux-2.6/arch/x86/include/asm/pgtable_64.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/pgtable_64.h
+++ linux-2.6/arch/x86/include/asm/pgtable_64.h
@@ -125,9 +125,7 @@ static inline int pgd_large(pgd_t pgd) {
/* x86-64 always has all page tables mapped. */
#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
-#define pte_offset_map_nested(dir, address) pte_offset_kernel((dir), (address))
#define pte_unmap(pte) ((void)(pte))/* NOP */
-#define pte_unmap_nested(pte) ((void)(pte)) /* NOP */
#define update_mmu_cache(vma, address, ptep) do { } while (0)
Index: linux-2.6/arch/xtensa/include/asm/pgtable.h
===================================================================
--- linux-2.6.orig/arch/xtensa/include/asm/pgtable.h
+++ linux-2.6/arch/xtensa/include/asm/pgtable.h
@@ -324,10 +324,7 @@ ptep_set_wrprotect(struct mm_struct *mm,
#define pte_offset_kernel(dir,addr) \
((pte_t*) pmd_page_vaddr(*(dir)) + pte_index(addr))
#define pte_offset_map(dir,addr) pte_offset_kernel((dir),(addr))
-#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir),(addr))
-
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
/*
Index: linux-2.6/mm/memory.c
===================================================================
--- linux-2.6.orig/mm/memory.c
+++ linux-2.6/mm/memory.c
@@ -736,7 +736,7 @@ again:
dst_pte = pte_alloc_map_lock(dst_mm, dst_pmd, addr, &dst_ptl);
if (!dst_pte)
return -ENOMEM;
- src_pte = pte_offset_map_nested(src_pmd, addr);
+ src_pte = pte_offset_map(src_pmd, addr);
src_ptl = pte_lockptr(src_mm, src_pmd);
spin_lock_nested(src_ptl, SINGLE_DEPTH_NESTING);
orig_src_pte = src_pte;
@@ -767,7 +767,7 @@ again:
arch_leave_lazy_mmu_mode();
spin_unlock(src_ptl);
- pte_unmap_nested(orig_src_pte);
+ pte_unmap(orig_src_pte);
add_mm_rss_vec(dst_mm, rss);
pte_unmap_unlock(orig_dst_pte, dst_ptl);
cond_resched();
Index: linux-2.6/mm/mremap.c
===================================================================
--- linux-2.6.orig/mm/mremap.c
+++ linux-2.6/mm/mremap.c
@@ -101,7 +101,7 @@ static void move_ptes(struct vm_area_str
* pte locks because exclusive mmap_sem prevents deadlock.
*/
old_pte = pte_offset_map_lock(mm, old_pmd, old_addr, &old_ptl);
- new_pte = pte_offset_map_nested(new_pmd, new_addr);
+ new_pte = pte_offset_map(new_pmd, new_addr);
new_ptl = pte_lockptr(mm, new_pmd);
if (new_ptl != old_ptl)
spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
@@ -119,7 +119,7 @@ static void move_ptes(struct vm_area_str
arch_leave_lazy_mmu_mode();
if (new_ptl != old_ptl)
spin_unlock(new_ptl);
- pte_unmap_nested(new_pte - 1);
+ pte_unmap(new_pte - 1);
pte_unmap_unlock(old_pte - 1, old_ptl);
if (mapping)
spin_unlock(&mapping->i_mmap_lock);
--
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next prev parent reply other threads:[~2010-08-19 20:30 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-19 20:13 [RFC][PATCH 0/6] mm, highmem: kmap_atomic rework Peter Zijlstra
2010-08-19 20:13 ` Peter Zijlstra
2010-08-19 20:13 ` [RFC][PATCH 1/6] mm: strictly nested kmap_atomic Peter Zijlstra
2010-08-19 20:13 ` Peter Zijlstra
2010-08-20 20:50 ` Rik van Riel
2010-08-20 20:50 ` Rik van Riel
2010-08-24 7:09 ` KAMEZAWA Hiroyuki
2010-08-24 7:09 ` KAMEZAWA Hiroyuki
2010-08-19 20:13 ` [RFC][PATCH 2/6] mm: stack based kmap_atomic Peter Zijlstra
2010-08-19 20:13 ` Peter Zijlstra
2010-08-20 21:34 ` Rik van Riel
2010-08-20 21:34 ` Rik van Riel
2010-08-24 7:24 ` KAMEZAWA Hiroyuki
2010-08-24 7:24 ` KAMEZAWA Hiroyuki
2010-08-24 7:35 ` KAMEZAWA Hiroyuki
2010-08-24 8:04 ` Peter Zijlstra
2010-08-19 20:13 ` [RFC][PATCH 3/6] mm, frv: Out-of-line kmap-atomic Peter Zijlstra
2010-08-19 20:13 ` Peter Zijlstra
2010-08-20 21:48 ` Rik van Riel
2010-08-20 21:48 ` Rik van Riel
2010-08-19 20:13 ` [RFC][PATCH 4/6] mm: Remove all KM_type arguments Peter Zijlstra
2010-08-19 20:13 ` Peter Zijlstra
2010-08-20 21:44 ` Rik van Riel
2010-08-20 21:44 ` Rik van Riel
2010-08-19 20:13 ` [RFC][PATCH 5/6] mm: Fix up KM_type argument removal fallout Peter Zijlstra
2010-08-19 20:13 ` Peter Zijlstra
2010-08-20 21:45 ` Rik van Riel
2010-08-20 21:45 ` Rik van Riel
2010-08-19 20:13 ` Peter Zijlstra [this message]
2010-08-19 20:13 ` [RFC][PATCH 6/6] mm: Remove pte_*map_nested() Peter Zijlstra
2010-08-20 21:47 ` Rik van Riel
2010-08-20 21:47 ` Rik van Riel
2010-08-19 21:31 ` [RFC][PATCH 0/6] mm, highmem: kmap_atomic rework Andrew Morton
2010-08-19 21:31 ` Andrew Morton
2010-08-20 14:38 ` Peter Zijlstra
2010-08-20 14:38 ` Peter Zijlstra
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