From: aarcange@redhat.com
To: linux-mm@kvack.org
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
Izik Eidus <ieidus@redhat.com>,
Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Nick Piggin <npiggin@suse.de>, Rik van Riel <riel@redhat.com>,
Mel Gorman <mel@csn.ul.ie>, Dave Hansen <dave@linux.vnet.ibm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Ingo Molnar <mingo@elte.hu>, Mike Travis <travis@sgi.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Christoph Lameter <cl@linux-foundation.org>,
Chris Wright <chrisw@sous-sol.org>,
Andrew Morton <akpm@linux-foundation.org>,
bpicco@redhat.com,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Arnd Bergmann <arnd@arndb.de>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: [patch 14/36] add pmd mangling generic functions
Date: Sun, 21 Feb 2010 15:10:23 +0100 [thread overview]
Message-ID: <20100221141755.005945547@redhat.com> (raw)
In-Reply-To: 20100221141009.581909647@redhat.com
[-- Attachment #1: pmd_mangling_generic --]
[-- Type: text/plain, Size: 6067 bytes --]
From: Andrea Arcangeli <aarcange@redhat.com>
Some are needed to build but not actually used on archs not supporting
transparent hugepages. Others like pmdp_clear_flush are used by x86 too.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
---
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -25,6 +25,26 @@
})
#endif
+#ifndef __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#define pmdp_set_access_flags(__vma, __address, __pmdp, __entry, __dirty) \
+ ({ \
+ int __changed = !pmd_same(*(__pmdp), __entry); \
+ VM_BUG_ON((__address) & ~HPAGE_PMD_MASK); \
+ if (__changed) { \
+ set_pmd_at((__vma)->vm_mm, __address, __pmdp, \
+ __entry); \
+ flush_tlb_range(__vma, __address, \
+ (__address) + HPAGE_PMD_SIZE); \
+ } \
+ __changed; \
+ })
+#else /* CONFIG_TRANSPARENT_HUGEPAGE */
+#define pmdp_set_access_flags(__vma, __address, __pmdp, __entry, __dirty) \
+ ({ BUG(); 0; })
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+#endif
+
#ifndef __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
#define ptep_test_and_clear_young(__vma, __address, __ptep) \
({ \
@@ -39,6 +59,25 @@
})
#endif
+#ifndef __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#define pmdp_test_and_clear_young(__vma, __address, __pmdp) \
+({ \
+ pmd_t __pmd = *(__pmdp); \
+ int r = 1; \
+ if (!pmd_young(__pmd)) \
+ r = 0; \
+ else \
+ set_pmd_at((__vma)->vm_mm, (__address), \
+ (__pmdp), pmd_mkold(__pmd)); \
+ r; \
+})
+#else /* CONFIG_TRANSPARENT_HUGEPAGE */
+#define pmdp_test_and_clear_young(__vma, __address, __pmdp) \
+ ({ BUG(); 0; })
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+#endif
+
#ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
#define ptep_clear_flush_young(__vma, __address, __ptep) \
({ \
@@ -50,6 +89,24 @@
})
#endif
+#ifndef __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#define pmdp_clear_flush_young(__vma, __address, __pmdp) \
+({ \
+ int __young; \
+ VM_BUG_ON((__address) & ~HPAGE_PMD_MASK); \
+ __young = pmdp_test_and_clear_young(__vma, __address, __pmdp); \
+ if (__young) \
+ flush_tlb_range(__vma, __address, \
+ (__address) + HPAGE_PMD_SIZE); \
+ __young; \
+})
+#else /* CONFIG_TRANSPARENT_HUGEPAGE */
+#define pmdp_clear_flush_young(__vma, __address, __pmdp) \
+ ({ BUG(); 0; })
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+#endif
+
#ifndef __HAVE_ARCH_PTEP_GET_AND_CLEAR
#define ptep_get_and_clear(__mm, __address, __ptep) \
({ \
@@ -59,6 +116,20 @@
})
#endif
+#ifndef __HAVE_ARCH_PMDP_GET_AND_CLEAR
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#define pmdp_get_and_clear(__mm, __address, __pmdp) \
+({ \
+ pmd_t __pmd = *(__pmdp); \
+ pmd_clear((__mm), (__address), (__pmdp)); \
+ __pmd; \
+})
+#else /* CONFIG_TRANSPARENT_HUGEPAGE */
+#define pmdp_get_and_clear(__mm, __address, __pmdp) \
+ ({ BUG(); 0; })
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+#endif
+
#ifndef __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
#define ptep_get_and_clear_full(__mm, __address, __ptep, __full) \
({ \
@@ -90,6 +161,22 @@ do { \
})
#endif
+#ifndef __HAVE_ARCH_PMDP_CLEAR_FLUSH
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#define pmdp_clear_flush(__vma, __address, __pmdp) \
+({ \
+ pmd_t __pmd; \
+ VM_BUG_ON((__address) & ~HPAGE_PMD_MASK); \
+ __pmd = pmdp_get_and_clear((__vma)->vm_mm, __address, __pmdp); \
+ flush_tlb_range(__vma, __address, (__address) + HPAGE_PMD_SIZE);\
+ __pmd; \
+})
+#else /* CONFIG_TRANSPARENT_HUGEPAGE */
+#define pmdp_clear_flush(__vma, __address, __pmdp) \
+ ({ BUG(); 0; })
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+#endif
+
#ifndef __HAVE_ARCH_PTEP_SET_WRPROTECT
struct mm_struct;
static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long address, pte_t *ptep)
@@ -99,10 +186,45 @@ static inline void ptep_set_wrprotect(st
}
#endif
+#ifndef __HAVE_ARCH_PMDP_SET_WRPROTECT
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+static inline void pmdp_set_wrprotect(struct mm_struct *mm, unsigned long address, pmd_t *pmdp)
+{
+ pmd_t old_pmd = *pmdp;
+ set_pmd_at(mm, address, pmdp, pmd_wrprotect(old_pmd));
+}
+#else /* CONFIG_TRANSPARENT_HUGEPAGE */
+#define pmdp_set_wrprotect(mm, address, pmdp) BUG()
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+#endif
+
+#ifndef __HAVE_ARCH_PMDP_SPLITTING_FLUSH
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#define pmdp_splitting_flush(__vma, __address, __pmdp) \
+({ \
+ pmd_t __pmd = pmd_mksplitting(*(__pmdp)); \
+ VM_BUG_ON((__address) & ~HPAGE_PMD_MASK); \
+ set_pmd_at((__vma)->vm_mm, __address, __pmdp, __pmd); \
+ /* tlb flush only to serialize against gup-fast */ \
+ flush_tlb_range(__vma, __address, (__address) + HPAGE_PMD_SIZE);\
+})
+#else /* CONFIG_TRANSPARENT_HUGEPAGE */
+#define pmdp_splitting_flush(__vma, __address, __pmdp) BUG()
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+#endif
+
#ifndef __HAVE_ARCH_PTE_SAME
#define pte_same(A,B) (pte_val(A) == pte_val(B))
#endif
+#ifndef __HAVE_ARCH_PMD_SAME
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#define pmd_same(A,B) (pmd_val(A) == pmd_val(B))
+#else /* CONFIG_TRANSPARENT_HUGEPAGE */
+#define pmd_same(A,B) ({ BUG(); 0; })
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+#endif
+
#ifndef __HAVE_ARCH_PAGE_TEST_DIRTY
#define page_test_dirty(page) (0)
#endif
@@ -347,6 +469,9 @@ extern void untrack_pfn_vma(struct vm_ar
#ifndef CONFIG_TRANSPARENT_HUGEPAGE
#define pmd_trans_huge(pmd) 0
#define pmd_trans_splitting(pmd) 0
+#ifndef __HAVE_ARCH_PMD_WRITE
+#define pmd_write(pmd) ({ BUG(); 0; })
+#endif /* __HAVE_ARCH_PMD_WRITE */
#endif
#endif /* !__ASSEMBLY__ */
--
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next prev parent reply other threads:[~2010-02-21 14:18 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-21 14:10 [patch 00/36] Transparent Hugepage support #11 aarcange
2010-02-21 14:10 ` [patch 01/36] define MADV_HUGEPAGE aarcange
2010-02-21 14:10 ` [patch 02/36] compound_lock aarcange
2010-02-21 14:10 ` [patch 03/36] alter compound get_page/put_page aarcange
2010-02-21 14:10 ` [patch 04/36] update futex compound knowledge aarcange
2010-02-21 14:10 ` [patch 05/36] fix bad_page to show the real reason the page is bad aarcange
2010-02-21 14:10 ` [patch 06/36] clear compound mapping aarcange
2010-02-21 14:10 ` [patch 07/36] add native_set_pmd_at aarcange
2010-02-21 14:10 ` [patch 08/36] add pmd paravirt ops aarcange
2010-02-21 14:10 ` [patch 09/36] no paravirt version of pmd ops aarcange
2010-02-21 14:10 ` [patch 10/36] export maybe_mkwrite aarcange
2010-02-21 14:10 ` [patch 11/36] comment reminder in destroy_compound_page aarcange
2010-02-21 14:10 ` [patch 12/36] config_transparent_hugepage aarcange
2010-02-21 14:10 ` [patch 13/36] special pmd_trans_* functions aarcange
2010-02-21 14:10 ` aarcange [this message]
2010-02-21 14:10 ` [patch 15/36] add pmd mangling functions to x86 aarcange
2010-02-21 14:10 ` [patch 16/36] bail out gup_fast on splitting pmd aarcange
2010-02-21 14:10 ` [patch 17/36] pte alloc trans splitting aarcange
2010-02-21 14:10 ` [patch 18/36] add pmd mmu_notifier helpers aarcange
2010-02-21 14:10 ` [patch 19/36] clear page compound aarcange
2010-02-21 14:10 ` [patch 20/36] add pmd_huge_pte to mm_struct aarcange
2010-02-21 14:10 ` [patch 21/36] split_huge_page_mm/vma aarcange
2010-02-21 14:10 ` [patch 22/36] split_huge_page paging aarcange
2010-02-21 14:10 ` [patch 23/36] clear_copy_huge_page aarcange
2010-02-21 14:10 ` [patch 24/36] kvm mmu transparent hugepage support aarcange
2010-02-21 14:10 ` [patch 25/36] _GFP_NO_KSWAPD aarcange
2010-02-22 17:53 ` Rik van Riel
2010-02-22 18:00 ` Andrea Arcangeli
2010-02-22 18:02 ` Avi Kivity
2010-03-01 12:14 ` Mel Gorman
2010-02-21 14:10 ` [patch 26/36] dont alloc harder for gfp nomemalloc even if nowait aarcange
2010-02-22 17:54 ` Rik van Riel
2010-02-21 14:10 ` [patch 27/36] transparent hugepage core aarcange
2010-02-21 14:10 ` [patch 28/36] adapt to mm_counter in -mm aarcange
2010-02-22 17:54 ` Rik van Riel
2010-02-21 14:10 ` [patch 29/36] page anon_vma aarcange
2010-02-22 17:55 ` Rik van Riel
2010-02-21 14:10 ` [patch 30/36] verify pmd_trans_huge isnt leaking aarcange
2010-02-22 17:56 ` Rik van Riel
2010-02-21 14:10 ` [patch 31/36] madvise(MADV_HUGEPAGE) aarcange
2010-02-21 14:10 ` [patch 32/36] pmd_trans_huge migrate bugcheck aarcange
2010-02-21 14:10 ` [patch 33/36] memcg compound aarcange
2010-02-21 14:10 ` [patch 34/36] memcg huge memory aarcange
2010-02-21 14:10 ` [patch 35/36] transparent hugepage vmstat aarcange
2010-02-21 14:10 ` [patch 36/36] khugepaged aarcange
2010-02-23 7:58 ` KAMEZAWA Hiroyuki
2010-02-23 8:51 ` KAMEZAWA Hiroyuki
2010-02-23 14:26 ` Andrea Arcangeli
2010-02-23 23:57 ` KAMEZAWA Hiroyuki
2010-02-24 20:11 ` Andrew Morton
2010-02-24 20:28 ` Rik van Riel
2010-02-24 20:52 ` Andrew Morton
2010-02-24 20:57 ` Rik van Riel
2010-02-24 21:12 ` Andrew Morton
2010-02-24 21:24 ` Rik van Riel
2010-02-24 21:28 ` Andrew Morton
2010-02-24 21:58 ` Andrea Arcangeli
2010-02-24 22:52 ` Andrea Arcangeli
2010-02-24 22:56 ` Rik van Riel
2010-02-22 10:22 ` [patch 00/36] Transparent Hugepage support #11 Andrea Arcangeli
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