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authorDavid Gibson <david@gibson.dropbear.id.au>2005-06-21 17:14:44 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-21 18:46:15 -0700
commit63551ae0feaaa23807ebea60de1901564bbef32e (patch)
treef6f97f60f83c3e9813bdfcc6039c499997b1ea10 /include/asm-sh64
parent1e7e5a9048b30c57ba1ddaa6cdf59b21b65cde99 (diff)
downloadop-kernel-dev-63551ae0feaaa23807ebea60de1901564bbef32e.zip
op-kernel-dev-63551ae0feaaa23807ebea60de1901564bbef32e.tar.gz
[PATCH] Hugepage consolidation
A lot of the code in arch/*/mm/hugetlbpage.c is quite similar. This patch attempts to consolidate a lot of the code across the arch's, putting the combined version in mm/hugetlb.c. There are a couple of uglyish hacks in order to covert all the hugepage archs, but the result is a very large reduction in the total amount of code. It also means things like hugepage lazy allocation could be implemented in one place, instead of six. Tested, at least a little, on ppc64, i386 and x86_64. Notes: - this patch changes the meaning of set_huge_pte() to be more analagous to set_pte() - does SH4 need s special huge_ptep_get_and_clear()?? Acked-by: William Lee Irwin <wli@holomorphy.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-sh64')
-rw-r--r--include/asm-sh64/page.h1
-rw-r--r--include/asm-sh64/pgtable.h2
2 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-sh64/page.h b/include/asm-sh64/page.h
index e1f7f5a..d6167f1 100644
--- a/include/asm-sh64/page.h
+++ b/include/asm-sh64/page.h
@@ -41,6 +41,7 @@
#define HPAGE_SIZE (1UL << HPAGE_SHIFT)
#define HPAGE_MASK (~(HPAGE_SIZE-1))
#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT-PAGE_SHIFT)
+#define ARCH_HAS_SETCLEAR_HUGE_PTE
#endif
#ifdef __KERNEL__
diff --git a/include/asm-sh64/pgtable.h b/include/asm-sh64/pgtable.h
index 525e152..78ac6be 100644
--- a/include/asm-sh64/pgtable.h
+++ b/include/asm-sh64/pgtable.h
@@ -430,6 +430,8 @@ extern inline pte_t pte_mkwrite(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) |
extern inline pte_t pte_mkexec(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_EXECUTE)); return pte; }
extern inline pte_t pte_mkdirty(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY)); return pte; }
extern inline pte_t pte_mkyoung(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_ACCESSED)); return pte; }
+extern inline pte_t pte_mkhuge(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_SZHUGE)); return pte; }
+
/*
* Conversion functions: convert a page and protection to a page entry.
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