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authorIngo Molnar <mingo@elte.hu>2008-08-21 15:28:24 +0400
committerIngo Molnar <mingo@elte.hu>2008-08-21 15:28:24 +0400
commit470fba7ebe60ad9185056b080b331abad24b4df9 (patch)
treef83bc13d97adaf5dd0e0f1d6a157b890f868577f /arch/ia64/include/asm/sparsemem.h
parent7225e75144b9718cbbe1820d9c011c809d5773fd (diff)
parent6a55617ed5d1aa62b850de2cf66f5ede2eef4825 (diff)
downloadlinux-470fba7ebe60ad9185056b080b331abad24b4df9.tar.xz
Merge branch 'linus' into x86/doc
Diffstat (limited to 'arch/ia64/include/asm/sparsemem.h')
-rw-r--r--arch/ia64/include/asm/sparsemem.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/sparsemem.h b/arch/ia64/include/asm/sparsemem.h
new file mode 100644
index 000000000000..67a7c40ec27f
--- /dev/null
+++ b/arch/ia64/include/asm/sparsemem.h
@@ -0,0 +1,20 @@
+#ifndef _ASM_IA64_SPARSEMEM_H
+#define _ASM_IA64_SPARSEMEM_H
+
+#ifdef CONFIG_SPARSEMEM
+/*
+ * SECTION_SIZE_BITS 2^N: how big each section will be
+ * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
+ */
+
+#define SECTION_SIZE_BITS (30)
+#define MAX_PHYSMEM_BITS (50)
+#ifdef CONFIG_FORCE_MAX_ZONEORDER
+#if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
+#undef SECTION_SIZE_BITS
+#define SECTION_SIZE_BITS (CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT)
+#endif
+#endif
+
+#endif /* CONFIG_SPARSEMEM */
+#endif /* _ASM_IA64_SPARSEMEM_H */