From: aarcange@redhat.com
To: linux-mm@kvack.org, akpm@linux-foundation.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>,
bpicco@redhat.com,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Arnd Bergmann <arnd@arndb.de>,
"Michael S. Tsirkin" <mst@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: [patch 14/35] add pmd mangling generic functions
Date: Tue, 09 Mar 2010 20:39:15 +0100 [thread overview]
Message-ID: <20100309194313.775471033@redhat.com> (raw)
In-Reply-To: 20100309193901.207868642@redhat.com
[-- Attachment #1: pmd_mangling_generic --]
[-- Type: text/plain, Size: 6108 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>
---
include/asm-generic/pgtable.h | 125 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 125 insertions(+)
--- 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:[~2010-03-09 19:44 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-09 19:39 [patch 00/35] Transparent Hugepage support #13 aarcange
2010-03-09 19:39 ` [patch 01/35] define MADV_HUGEPAGE aarcange
2010-03-09 19:39 ` [patch 02/35] compound_lock aarcange
2010-03-09 19:39 ` [patch 03/35] alter compound get_page/put_page aarcange
2010-03-09 19:39 ` [patch 04/35] update futex compound knowledge aarcange
2010-03-09 19:39 ` [patch 05/35] fix bad_page to show the real reason the page is bad aarcange
2010-03-09 19:39 ` [patch 06/35] clear compound mapping aarcange
2010-03-09 19:39 ` [patch 07/35] add native_set_pmd_at aarcange
2010-03-09 19:39 ` [patch 08/35] add pmd paravirt ops aarcange
2010-03-09 19:39 ` [patch 09/35] no paravirt version of pmd ops aarcange
2010-03-09 19:39 ` [patch 10/35] export maybe_mkwrite aarcange
2010-03-09 19:39 ` [patch 11/35] comment reminder in destroy_compound_page aarcange
2010-03-09 19:39 ` [patch 12/35] config_transparent_hugepage aarcange
2010-03-09 19:39 ` [patch 13/35] special pmd_trans_* functions aarcange
2010-03-09 19:39 ` aarcange [this message]
2010-03-09 19:39 ` [patch 15/35] add pmd mangling functions to x86 aarcange
2010-03-09 19:39 ` [patch 16/35] bail out gup_fast on splitting pmd aarcange
2010-03-09 19:39 ` [patch 17/35] pte alloc trans splitting aarcange
2010-03-09 19:39 ` [patch 18/35] add pmd mmu_notifier helpers aarcange
2010-03-09 19:39 ` [patch 19/35] clear page compound aarcange
2010-03-09 19:39 ` [patch 20/35] add pmd_huge_pte to mm_struct aarcange
2010-03-09 19:39 ` [patch 21/35] split_huge_page_mm/vma aarcange
2010-03-09 19:39 ` [patch 22/35] split_huge_page paging aarcange
2010-03-09 19:39 ` [patch 23/35] clear_copy_huge_page aarcange
2010-03-09 19:39 ` [patch 24/35] kvm mmu transparent hugepage support aarcange
2010-03-09 19:39 ` [patch 25/35] _GFP_NO_KSWAPD aarcange
2010-03-09 19:39 ` [patch 26/35] dont alloc harder for gfp nomemalloc even if nowait aarcange
2010-03-09 19:39 ` [patch 27/35] transparent hugepage core aarcange
2010-03-09 19:39 ` [patch 28/35] adapt to mm_counter in -mm aarcange
2010-03-09 19:39 ` [patch 29/35] verify pmd_trans_huge isnt leaking aarcange
2010-03-09 19:39 ` [patch 30/35] madvise(MADV_HUGEPAGE) aarcange
2010-03-09 19:39 ` [patch 31/35] pmd_trans_huge migrate bugcheck aarcange
2010-03-09 19:39 ` [patch 32/35] memcg compound aarcange
2010-03-09 19:39 ` [patch 33/35] memcg huge memory aarcange
2010-03-09 19:39 ` [patch 34/35] transparent hugepage vmstat aarcange
2010-03-09 19:39 ` [patch 35/35] khugepaged aarcange
2010-03-11 0:55 ` [patch 00/35] Transparent Hugepage support #13 Andrea Arcangeli
-- strict thread matches above, loose matches on Subject: below --
2010-02-26 20:04 [patch 00/35] Transparent Hugepage support #12 aarcange
2010-02-26 20:04 ` [patch 14/35] add pmd mangling generic functions aarcange
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