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Message-Id: <1540990801-4261-2-git-send-email-schwidefsky@de.ibm.com>
Date: Wed, 31 Oct 2018 13:59:58 +0100
From: Martin Schwidefsky <schwidefsky@...ibm.com>
To: Li Wang <liwang@...hat.com>, Guenter Roeck <linux@...ck-us.net>,
Janosch Frank <frankja@...ux.vnet.ibm.com>,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
Heiko Carstens <heiko.carstens@...ibm.com>,
linux-kernel <linux-kernel@...r.kernel.org>,
Linux-MM <linux-mm@...ck.org>
Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: [PATCH 1/4] mm: make the __PAGETABLE_PxD_FOLDED defines non-empty
Change the currently empty defines for __PAGETABLE_PMD_FOLDED,
__PAGETABLE_PUD_FOLDED and __PAGETABLE_P4D_FOLDED to return 1.
This makes it possible to use __is_defined() to test if the
preprocessor define exists.
Signed-off-by: Martin Schwidefsky <schwidefsky@...ibm.com>
---
arch/arm/include/asm/pgtable-2level.h | 2 +-
arch/m68k/include/asm/pgtable_mm.h | 4 ++--
arch/microblaze/include/asm/pgtable.h | 2 +-
arch/nds32/include/asm/pgtable.h | 2 +-
arch/parisc/include/asm/pgtable.h | 2 +-
include/asm-generic/4level-fixup.h | 2 +-
include/asm-generic/5level-fixup.h | 2 +-
include/asm-generic/pgtable-nop4d-hack.h | 2 +-
include/asm-generic/pgtable-nop4d.h | 2 +-
include/asm-generic/pgtable-nopmd.h | 2 +-
include/asm-generic/pgtable-nopud.h | 2 +-
11 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
index 92fd2c8..12659ce 100644
--- a/arch/arm/include/asm/pgtable-2level.h
+++ b/arch/arm/include/asm/pgtable-2level.h
@@ -10,7 +10,7 @@
#ifndef _ASM_PGTABLE_2LEVEL_H
#define _ASM_PGTABLE_2LEVEL_H
-#define __PAGETABLE_PMD_FOLDED
+#define __PAGETABLE_PMD_FOLDED 1
/*
* Hardware-wise, we have a two level page table structure, where the first
diff --git a/arch/m68k/include/asm/pgtable_mm.h b/arch/m68k/include/asm/pgtable_mm.h
index 6181e41..fe3ddd7 100644
--- a/arch/m68k/include/asm/pgtable_mm.h
+++ b/arch/m68k/include/asm/pgtable_mm.h
@@ -55,12 +55,12 @@
*/
#ifdef CONFIG_SUN3
#define PTRS_PER_PTE 16
-#define __PAGETABLE_PMD_FOLDED
+#define __PAGETABLE_PMD_FOLDED 1
#define PTRS_PER_PMD 1
#define PTRS_PER_PGD 2048
#elif defined(CONFIG_COLDFIRE)
#define PTRS_PER_PTE 512
-#define __PAGETABLE_PMD_FOLDED
+#define __PAGETABLE_PMD_FOLDED 1
#define PTRS_PER_PMD 1
#define PTRS_PER_PGD 1024
#else
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index f64ebb9..e14b662 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -63,7 +63,7 @@ extern int mem_init_done;
#include <asm-generic/4level-fixup.h>
-#define __PAGETABLE_PMD_FOLDED
+#define __PAGETABLE_PMD_FOLDED 1
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
diff --git a/arch/nds32/include/asm/pgtable.h b/arch/nds32/include/asm/pgtable.h
index d3e19a5..9f52db9 100644
--- a/arch/nds32/include/asm/pgtable.h
+++ b/arch/nds32/include/asm/pgtable.h
@@ -4,7 +4,7 @@
#ifndef _ASMNDS32_PGTABLE_H
#define _ASMNDS32_PGTABLE_H
-#define __PAGETABLE_PMD_FOLDED
+#define __PAGETABLE_PMD_FOLDED 1
#include <asm-generic/4level-fixup.h>
#include <asm-generic/sizes.h>
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index b941ac7..c7bb74e 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -111,7 +111,7 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
#if CONFIG_PGTABLE_LEVELS == 3
#define BITS_PER_PMD (PAGE_SHIFT + PMD_ORDER - BITS_PER_PMD_ENTRY)
#else
-#define __PAGETABLE_PMD_FOLDED
+#define __PAGETABLE_PMD_FOLDED 1
#define BITS_PER_PMD 0
#endif
#define PTRS_PER_PMD (1UL << BITS_PER_PMD)
diff --git a/include/asm-generic/4level-fixup.h b/include/asm-generic/4level-fixup.h
index 89f3b03..e3667c9 100644
--- a/include/asm-generic/4level-fixup.h
+++ b/include/asm-generic/4level-fixup.h
@@ -3,7 +3,7 @@
#define _4LEVEL_FIXUP_H
#define __ARCH_HAS_4LEVEL_HACK
-#define __PAGETABLE_PUD_FOLDED
+#define __PAGETABLE_PUD_FOLDED 1
#define PUD_SHIFT PGDIR_SHIFT
#define PUD_SIZE PGDIR_SIZE
diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5level-fixup.h
index 9c2e070..73474bb 100644
--- a/include/asm-generic/5level-fixup.h
+++ b/include/asm-generic/5level-fixup.h
@@ -3,7 +3,7 @@
#define _5LEVEL_FIXUP_H
#define __ARCH_HAS_5LEVEL_HACK
-#define __PAGETABLE_P4D_FOLDED
+#define __PAGETABLE_P4D_FOLDED 1
#define P4D_SHIFT PGDIR_SHIFT
#define P4D_SIZE PGDIR_SIZE
diff --git a/include/asm-generic/pgtable-nop4d-hack.h b/include/asm-generic/pgtable-nop4d-hack.h
index 0c34215..1d6dd38 100644
--- a/include/asm-generic/pgtable-nop4d-hack.h
+++ b/include/asm-generic/pgtable-nop4d-hack.h
@@ -5,7 +5,7 @@
#ifndef __ASSEMBLY__
#include <asm-generic/5level-fixup.h>
-#define __PAGETABLE_PUD_FOLDED
+#define __PAGETABLE_PUD_FOLDED 1
/*
* Having the pud type consist of a pgd gets the size right, and allows
diff --git a/include/asm-generic/pgtable-nop4d.h b/include/asm-generic/pgtable-nop4d.h
index 1a29b2a..04cb913 100644
--- a/include/asm-generic/pgtable-nop4d.h
+++ b/include/asm-generic/pgtable-nop4d.h
@@ -4,7 +4,7 @@
#ifndef __ASSEMBLY__
-#define __PAGETABLE_P4D_FOLDED
+#define __PAGETABLE_P4D_FOLDED 1
typedef struct { pgd_t pgd; } p4d_t;
diff --git a/include/asm-generic/pgtable-nopmd.h b/include/asm-generic/pgtable-nopmd.h
index f35f6e8..b85b827 100644
--- a/include/asm-generic/pgtable-nopmd.h
+++ b/include/asm-generic/pgtable-nopmd.h
@@ -8,7 +8,7 @@
struct mm_struct;
-#define __PAGETABLE_PMD_FOLDED
+#define __PAGETABLE_PMD_FOLDED 1
/*
* Having the pmd type consist of a pud gets the size right, and allows
diff --git a/include/asm-generic/pgtable-nopud.h b/include/asm-generic/pgtable-nopud.h
index e950b9c..9bef475 100644
--- a/include/asm-generic/pgtable-nopud.h
+++ b/include/asm-generic/pgtable-nopud.h
@@ -9,7 +9,7 @@
#else
#include <asm-generic/pgtable-nop4d.h>
-#define __PAGETABLE_PUD_FOLDED
+#define __PAGETABLE_PUD_FOLDED 1
/*
* Having the pud type consist of a p4d gets the size right, and allows
--
2.7.4
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