Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-i386/mmzone.h b/include/asm-i386/mmzone.h
new file mode 100644
index 0000000..13830ae
--- /dev/null
+++ b/include/asm-i386/mmzone.h
@@ -0,0 +1,147 @@
+/*
+ * Written by Pat Gaughen (gone@us.ibm.com) Mar 2002
+ *
+ */
+
+#ifndef _ASM_MMZONE_H_
+#define _ASM_MMZONE_H_
+
+#include <asm/smp.h>
+
+#ifdef CONFIG_DISCONTIGMEM
+
+#ifdef CONFIG_NUMA
+ #ifdef CONFIG_X86_NUMAQ
+ #include <asm/numaq.h>
+ #else /* summit or generic arch */
+ #include <asm/srat.h>
+ #endif
+#else /* !CONFIG_NUMA */
+ #define get_memcfg_numa get_memcfg_numa_flat
+ #define get_zholes_size(n) (0)
+#endif /* CONFIG_NUMA */
+
+extern struct pglist_data *node_data[];
+#define NODE_DATA(nid) (node_data[nid])
+
+/*
+ * generic node memory support, the following assumptions apply:
+ *
+ * 1) memory comes in 256Mb contigious chunks which are either present or not
+ * 2) we will not have more than 64Gb in total
+ *
+ * for now assume that 64Gb is max amount of RAM for whole system
+ * 64Gb / 4096bytes/page = 16777216 pages
+ */
+#define MAX_NR_PAGES 16777216
+#define MAX_ELEMENTS 256
+#define PAGES_PER_ELEMENT (MAX_NR_PAGES/MAX_ELEMENTS)
+
+extern s8 physnode_map[];
+
+static inline int pfn_to_nid(unsigned long pfn)
+{
+#ifdef CONFIG_NUMA
+ return((int) physnode_map[(pfn) / PAGES_PER_ELEMENT]);
+#else
+ return 0;
+#endif
+}
+
+/*
+ * Following are macros that are specific to this numa platform.
+ */
+#define reserve_bootmem(addr, size) \
+ reserve_bootmem_node(NODE_DATA(0), (addr), (size))
+#define alloc_bootmem(x) \
+ __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
+#define alloc_bootmem_low(x) \
+ __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, 0)
+#define alloc_bootmem_pages(x) \
+ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
+#define alloc_bootmem_low_pages(x) \
+ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, 0)
+#define alloc_bootmem_node(ignore, x) \
+ __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
+#define alloc_bootmem_pages_node(ignore, x) \
+ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
+#define alloc_bootmem_low_pages_node(ignore, x) \
+ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, 0)
+
+#define node_localnr(pfn, nid) ((pfn) - node_data[nid]->node_start_pfn)
+
+/*
+ * Following are macros that each numa implmentation must define.
+ */
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ */
+#define kvaddr_to_nid(kaddr) pfn_to_nid(__pa(kaddr) >> PAGE_SHIFT)
+
+#define node_mem_map(nid) (NODE_DATA(nid)->node_mem_map)
+#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
+#define node_end_pfn(nid) \
+({ \
+ pg_data_t *__pgdat = NODE_DATA(nid); \
+ __pgdat->node_start_pfn + __pgdat->node_spanned_pages; \
+})
+
+#define local_mapnr(kvaddr) \
+({ \
+ unsigned long __pfn = __pa(kvaddr) >> PAGE_SHIFT; \
+ (__pfn - node_start_pfn(pfn_to_nid(__pfn))); \
+})
+
+/* XXX: FIXME -- wli */
+#define kern_addr_valid(kaddr) (0)
+
+#define pfn_to_page(pfn) \
+({ \
+ unsigned long __pfn = pfn; \
+ int __node = pfn_to_nid(__pfn); \
+ &node_mem_map(__node)[node_localnr(__pfn,__node)]; \
+})
+
+#define page_to_pfn(pg) \
+({ \
+ struct page *__page = pg; \
+ struct zone *__zone = page_zone(__page); \
+ (unsigned long)(__page - __zone->zone_mem_map) \
+ + __zone->zone_start_pfn; \
+})
+
+#ifdef CONFIG_X86_NUMAQ /* we have contiguous memory on NUMA-Q */
+#define pfn_valid(pfn) ((pfn) < num_physpages)
+#else
+static inline int pfn_valid(int pfn)
+{
+ int nid = pfn_to_nid(pfn);
+
+ if (nid >= 0)
+ return (pfn < node_end_pfn(nid));
+ return 0;
+}
+#endif
+
+extern int get_memcfg_numa_flat(void );
+/*
+ * This allows any one NUMA architecture to be compiled
+ * for, and still fall back to the flat function if it
+ * fails.
+ */
+static inline void get_memcfg_numa(void)
+{
+#ifdef CONFIG_X86_NUMAQ
+ if (get_memcfg_numaq())
+ return;
+#elif CONFIG_ACPI_SRAT
+ if (get_memcfg_from_srat())
+ return;
+#endif
+
+ get_memcfg_numa_flat();
+}
+
+#endif /* CONFIG_DISCONTIGMEM */
+#endif /* _ASM_MMZONE_H_ */