X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fi386%2Fkernel%2Fsrat.c;h=74b0c8e03fb8078e0513aa148d5d023ceb32ac00;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=8c0bd561f4d6ce0b6ed8aec574bfe9ce0e5faef5;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/arch/i386/kernel/srat.c b/arch/i386/kernel/srat.c
index 8c0bd561f..74b0c8e03 100644
--- a/arch/i386/kernel/srat.c
+++ b/arch/i386/kernel/srat.c
@@ -28,6 +28,7 @@
 #include <linux/bootmem.h>
 #include <linux/mmzone.h>
 #include <linux/acpi.h>
+#include <linux/nodemask.h>
 #include <asm/srat.h>
 
 /*
@@ -181,23 +182,6 @@ static __init void chunk_to_zones(unsigned long cstart, unsigned long cend,
 	}
 }
 
-static void __init initialize_physnode_map(void)
-{
-	int i;
-	unsigned long pfn;
-	struct node_memory_chunk_s *nmcp;
-
-	/* Run the list of memory chunks and fill in the phymap. */
-	nmcp = node_memory_chunk;
-	for (i = num_memory_chunks; --i >= 0; nmcp++) {
-		for (pfn = nmcp->start_pfn; pfn <= nmcp->end_pfn;
-						pfn += PAGES_PER_ELEMENT)
-		{
-			physnode_map[pfn / PAGES_PER_ELEMENT] = (int)nmcp->nid;
-		}
-	}
-}
-
 /* Parse the ACPI Static Resource Affinity Table */
 static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
 {
@@ -248,31 +232,33 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
 	 * a set of sequential node IDs starting at zero.  (ACPI doesn't seem
 	 * to specify the range of _PXM values.)
 	 */
-	numnodes = 0;		/* init total nodes in system */
+	/*
+	 * MCD - we no longer HAVE to number nodes sequentially.  PXM domain
+	 * numbers could go as high as 256, and MAX_NUMNODES for i386 is typically
+	 * 32, so we will continue numbering them in this manner until MAX_NUMNODES
+	 * approaches MAX_PXM_DOMAINS for i386.
+	 */
+	nodes_clear(node_online_map);
 	for (i = 0; i < MAX_PXM_DOMAINS; i++) {
 		if (BMAP_TEST(pxm_bitmap, i)) {
-			pxm_to_nid_map[i] = numnodes;
-			nid_to_pxm_map[numnodes] = i;
-			node_set_online(numnodes);
-			++numnodes;
+			nid = num_online_nodes();
+			pxm_to_nid_map[i] = nid;
+			nid_to_pxm_map[nid] = i;
+			node_set_online(nid);
 		}
 	}
-
-	if (numnodes == 0)
-		BUG();
+	BUG_ON(num_online_nodes() == 0);
 
 	/* set cnode id in memory chunk structure */
 	for (i = 0; i < num_memory_chunks; i++)
 		node_memory_chunk[i].nid = pxm_to_nid_map[node_memory_chunk[i].pxm];
 
-	initialize_physnode_map();
-	
 	printk("pxm bitmap: ");
 	for (i = 0; i < sizeof(pxm_bitmap); i++) {
 		printk("%02X ", pxm_bitmap[i]);
 	}
 	printk("\n");
-	printk("Number of logical nodes in system = %d\n", numnodes);
+	printk("Number of logical nodes in system = %d\n", num_online_nodes());
 	printk("Number of memory chunks in system = %d\n", num_memory_chunks);
 
 	for (j = 0; j < num_memory_chunks; j++){
@@ -283,7 +269,7 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
 	}
  
 	/*calculate node_start_pfn/node_end_pfn arrays*/
-	for (nid = 0; nid < numnodes; nid++) {
+	for_each_online_node(nid) {
 		int been_here_before = 0;
 
 		for (j = 0; j < num_memory_chunks; j++){
@@ -415,7 +401,7 @@ static void __init get_zholes_init(void)
 	int first;
 	unsigned long end = 0;
 
-	for (nid = 0; nid < numnodes; nid++) {
+	for_each_online_node(nid) {
 		first = 1;
 		for (c = 0; c < num_memory_chunks; c++){
 			if (node_memory_chunk[c].nid == nid) {
@@ -443,8 +429,8 @@ unsigned long * __init get_zholes_size(int nid)
 		zholes_size_init++;
 		get_zholes_init();
 	}
-	if((nid >= numnodes) | (nid >= MAX_NUMNODES))
-		printk("%s: nid = %d is invalid. numnodes = %d",
-		       __FUNCTION__, nid, numnodes);
+	if (nid >= MAX_NUMNODES || !node_online(nid))
+		printk("%s: nid = %d is invalid/offline. num_online_nodes = %d",
+		       __FUNCTION__, nid, num_online_nodes());
 	return &zholes_size[nid * MAX_NR_ZONES];
 }