From: Russell King <rmk@arm.linux.org.uk>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: page table cache init cleanup
Date: Mon, 27 Aug 2001 23:32:57 +0100 [thread overview]
Message-ID: <20010827233257.D28096@flint.arm.linux.org.uk> (raw)
Alan,
The following patch cleans up the page table cache init functions.
This is now a generic function across all architectures. Dummy
definitions are placed in the relevant asm-*/pgtable.h.
Background: on X86 with PAE enabled, and ARM, we require a method
to initialise slab caches for page tables. We'd rather not have a
plethora of ifdef'd function calls in init/main.c.
This patch was generated against 2.4.8-ac12.
--- orig/init/main.c Sun Aug 26 17:30:59 2001
+++ linux/init/main.c Mon Aug 27 23:00:17 2001
@@ -665,9 +666,8 @@
#endif
mem_init();
kmem_cache_sizes_init();
-#if CONFIG_X86_PAE
- init_pae_pgd_cache();
-#endif
+ pgtable_cache_init();
+
mempages = num_physpages;
fork_init(mempages);
--- orig/include/asm-alpha/pgtable.h Sun Aug 26 17:30:41 2001
+++ linux/include/asm-alpha/pgtable.h Mon Aug 27 23:21:08 2001
@@ -358,5 +358,10 @@
extern void paging_init(void);
#include <asm-generic/pgtable.h>
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
#endif /* _ALPHA_PGTABLE_H */
--- orig/include/asm-cris/pgtable.h Sat May 26 14:42:29 2001
+++ linux/include/asm-cris/pgtable.h Mon Aug 27 23:21:08 2001
@@ -501,4 +501,9 @@
#include <asm-generic/pgtable.h>
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif /* _CRIS_PGTABLE_H */
--- orig/include/asm-i386/pgtable.h Sat Mar 31 23:47:43 2001
+++ linux/include/asm-i386/pgtable.h Mon Aug 27 23:27:51 2001
@@ -105,8 +105,20 @@
#ifndef __ASSEMBLY__
#if CONFIG_X86_PAE
# include <asm/pgtable-3level.h>
+
+/*
+ * Need to initialise the X86 PAE caches
+ */
+extern void pgtable_cache_init(void);
+
#else
# include <asm/pgtable-2level.h>
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif
#endif
--- orig/include/asm-ia64/pgtable.h Sat Aug 11 14:59:47 2001
+++ linux/include/asm-ia64/pgtable.h Mon Aug 27 23:21:08 2001
@@ -472,5 +472,10 @@
#define KERNEL_PG_SHIFT _PAGE_SIZE_64M
#define KERNEL_PG_SIZE (1 << KERNEL_PG_SHIFT)
#define KERNEL_PG_NUM ((KERNEL_START - PAGE_OFFSET) / KERNEL_PG_SIZE)
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
#endif /* _ASM_IA64_PGTABLE_H */
--- orig/include/asm-m68k/pgtable.h Wed Dec 13 00:00:25 2000
+++ linux/include/asm-m68k/pgtable.h Mon Aug 27 23:21:08 2001
@@ -181,5 +181,10 @@
#ifndef __ASSEMBLY__
#include <asm-generic/pgtable.h>
#endif /* !__ASSEMBLY__ */
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
#endif /* _M68K_PGTABLE_H */
--- orig/include/asm-mips/pgtable.h Fri Jul 6 09:55:23 2001
+++ linux/include/asm-mips/pgtable.h Mon Aug 27 23:21:08 2001
@@ -743,5 +743,10 @@
#endif /* !defined (_LANGUAGE_ASSEMBLY) */
#define io_remap_page_range remap_page_range
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
#endif /* _ASM_PGTABLE_H */
--- orig/include/asm-mips64/pgtable.h Sun Aug 26 17:30:46 2001
+++ linux/include/asm-mips64/pgtable.h Mon Aug 27 23:21:09 2001
@@ -798,5 +798,10 @@
#include <asm-generic/pgtable.h>
#endif /* !defined (_LANGUAGE_ASSEMBLY) */
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
#endif /* _ASM_PGTABLE_H */
--- orig/include/asm-parisc/pgtable.h Wed Dec 13 00:00:27 2000
+++ linux/include/asm-parisc/pgtable.h Mon Aug 27 23:21:10 2001
@@ -334,4 +334,9 @@
#define io_remap_page_range remap_page_range
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif /* _PARISC_PAGE_H */
--- orig/include/asm-ppc/pgtable.h Fri Jul 6 09:55:24 2001
+++ linux/include/asm-ppc/pgtable.h Mon Aug 27 23:21:10 2001
@@ -531,6 +531,11 @@
#define io_remap_page_range remap_page_range
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif /* __ASSEMBLY__ */
#endif /* _PPC_PGTABLE_H */
#endif /* __KERNEL__ */
--- orig/include/asm-ppc64/pgtable.h Sun Aug 26 17:30:49 2001
+++ linux/include/asm-ppc64/pgtable.h Mon Aug 27 23:21:10 2001
@@ -438,5 +438,10 @@
/* #include <asm-generic/pgtable.h> */
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif /* __ASSEMBLY__ */
#endif /* _PPC64_PGTABLE_H */
--- orig/include/asm-s390/pgtable.h Sat Aug 11 14:59:48 2001
+++ linux/include/asm-s390/pgtable.h Mon Aug 27 23:21:10 2001
@@ -472,6 +472,11 @@
/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
#define PageSkip(page) (0)
#define kern_addr_valid(addr) (1)
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
#endif /* _S390_PAGE_H */
--- orig/include/asm-s390x/pgtable.h Sat Aug 11 14:59:49 2001
+++ linux/include/asm-s390x/pgtable.h Mon Aug 27 23:21:10 2001
@@ -492,5 +492,10 @@
#define PageSkip(page) (0)
#define kern_addr_valid(addr) (1)
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif /* _S390_PAGE_H */
--- orig/include/asm-sh/pgtable.h Fri Jul 6 09:55:24 2001
+++ linux/include/asm-sh/pgtable.h Mon Aug 27 23:21:10 2001
@@ -275,6 +275,11 @@
#define PageSkip(page) (0)
#define kern_addr_valid(addr) (1)
#define io_remap_page_range remap_page_range
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
#endif /* __ASM_SH_PAGE_H */
--- orig/include/asm-sparc/pgtable.h Sat Aug 11 14:59:49 2001
+++ linux/include/asm-sparc/pgtable.h Mon Aug 27 23:21:10 2001
@@ -454,4 +454,9 @@
/* We provide our own get_unmapped_area to cope with VA holes for userland */
#define HAVE_ARCH_UNMAPPED_AREA
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif /* !(_SPARC_PGTABLE_H) */
--- orig/include/asm-sparc64/pgtable.h Sun Aug 26 17:30:51 2001
+++ linux/include/asm-sparc64/pgtable.h Mon Aug 27 23:21:10 2001
@@ -326,4 +326,9 @@
#endif /* !(__ASSEMBLY__) */
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif /* !(_SPARC64_PGTABLE_H) */
--- orig/include/asm-um/pgtable.h Sun Aug 26 17:30:51 2001
+++ linux/include/asm-um/pgtable.h Mon Aug 27 23:21:10 2001
@@ -365,6 +365,11 @@
#endif
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
--- orig/include/asm-x86_64/pgtable.h Sun Aug 26 17:30:53 2001
+++ linux/include/asm-x86_64/pgtable.h Mon Aug 27 23:21:10 2001
@@ -398,4 +398,9 @@
#define HAVE_ARCH_UNMAPPED_AREA
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
#endif /* _X86_64_PGTABLE_H */
--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
reply other threads:[~2001-08-27 22:33 UTC|newest]
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