Attachment 899375 Details for Bug 1099985 – NUMA patch

[patch] NUMA patch

numapagetable.patch (text/plain), 1.90 KB, created by Alan Hamilton on 2014-05-27 03:33:09 UTC

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Creator: Alan Hamilton

Created: 2014-05-27 03:33:09 UTC

Size: 1.90 KB

patch

obsolete

>diff -uNr a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
>--- linux-3.14.4-200.local.fc20.x86_64/include/asm-generic/pgtable.h	2014-03-30 20:40:15.000000000 -0700
>+++ b/include/asm-generic/pgtable.h	2014-05-26 11:51:00.168345722 -0700
>@@ -193,6 +193,19 @@
> }
> #endif
> 
>+#ifndef __HAVE_ARCH_PTE_UNUSED
>+/*
>+ * Some architectures provide facilities to virtualization guests
>+ * so that they can flag allocated pages as unused. This allows the
>+ * host to transparently reclaim unused pages. This function returns
>+ * whether the pte's page is unused.
>+ */
>+static inline int pte_unused(pte_t pte)
>+{
>+	return 0;
>+}
>+#endif
>+
> #ifndef __HAVE_ARCH_PMD_SAME
> #ifdef CONFIG_TRANSPARENT_HUGEPAGE
> static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b)
>@@ -680,24 +693,35 @@
> #ifndef pte_mknonnuma
> static inline pte_t pte_mknonnuma(pte_t pte)
> {
>-	pte = pte_clear_flags(pte, _PAGE_NUMA);
>-	return pte_set_flags(pte, _PAGE_PRESENT|_PAGE_ACCESSED);
>+	pteval_t val = pte_val(pte);
>+
>+	val &= ~_PAGE_NUMA;
>+	val |= (_PAGE_PRESENT|_PAGE_ACCESSED);
>+	return __pte(val);
> }
> #endif
> 
> #ifndef pmd_mknonnuma
> static inline pmd_t pmd_mknonnuma(pmd_t pmd)
> {
>-	pmd = pmd_clear_flags(pmd, _PAGE_NUMA);
>-	return pmd_set_flags(pmd, _PAGE_PRESENT|_PAGE_ACCESSED);
>+	pmdval_t val = pmd_val(pmd);
>+
>+	val &= ~_PAGE_NUMA;
>+	val |= (_PAGE_PRESENT|_PAGE_ACCESSED);
>+
>+	return __pmd(val);
> }
> #endif
> 
> #ifndef pte_mknuma
> static inline pte_t pte_mknuma(pte_t pte)
> {
>-	pte = pte_set_flags(pte, _PAGE_NUMA);
>-	return pte_clear_flags(pte, _PAGE_PRESENT);
>+	pteval_t val = pte_val(pte);
>+
>+	val &= ~_PAGE_PRESENT;
>+	val |= _PAGE_NUMA;
>+
>+	return __pte(val);
> }
> #endif
> 
>@@ -716,8 +740,12 @@
> #ifndef pmd_mknuma
> static inline pmd_t pmd_mknuma(pmd_t pmd)
> {
>-	pmd = pmd_set_flags(pmd, _PAGE_NUMA);
>-	return pmd_clear_flags(pmd, _PAGE_PRESENT);
>+	pmdval_t val = pmd_val(pmd);
>+
>+	val &= ~_PAGE_PRESENT;
>+	val |= _PAGE_NUMA;
>+
>+	return __pmd(val);
> }
> #endif
>

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Attachments on bug 1099985: 898080 | 898715 | 899375