X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86_64%2Fmm%2Fsrat.c;h=f8c04d6935c922725d64ddf97178826f1b3e27cd;hb=ba21fe71725f94792330ebc3034ef2b35a36276f;hp=15ae9fcd65a700c9f9060860f0fce56f7f6f3fcf;hpb=32ea89ecb25789b1b7db28146558587a42f3b372;p=pandora-kernel.git

diff --git a/arch/x86_64/mm/srat.c b/arch/x86_64/mm/srat.c
index 15ae9fcd65a7..f8c04d6935c9 100644
--- a/arch/x86_64/mm/srat.c
+++ b/arch/x86_64/mm/srat.c
@@ -21,6 +21,8 @@
 #include <asm/numa.h>
 #include <asm/e820.h>
 
+int acpi_numa __initdata;
+
 #if (defined(CONFIG_ACPI_HOTPLUG_MEMORY) || \
 	defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)) \
 		&& !defined(CONFIG_MEMORY_HOTPLUG)
@@ -30,38 +32,21 @@
 static struct acpi_table_slit *acpi_slit;
 
 static nodemask_t nodes_parsed __initdata;
-static nodemask_t nodes_found __initdata;
 static struct bootnode nodes[MAX_NUMNODES] __initdata;
 static struct bootnode nodes_add[MAX_NUMNODES] __initdata;
 static int found_add_area __initdata;
-int hotadd_percent __initdata = 10;
-static u8 pxm2node[256] = { [0 ... 255] = 0xff };
+int hotadd_percent __initdata = 0;
+#ifndef RESERVE_HOTADD
+#define hotadd_percent 0	/* Ignore all settings */
+#endif
 
 /* Too small nodes confuse the VM badly. Usually they result
    from BIOS bugs. */
 #define NODE_MIN_SIZE (4*1024*1024)
 
-static int node_to_pxm(int n);
-
-int pxm_to_node(int pxm)
-{
-	if ((unsigned)pxm >= 256)
-		return -1;
-	/* Extend 0xff to (int)-1 */
-	return (signed char)pxm2node[pxm];
-}
-
 static __init int setup_node(int pxm)
 {
-	unsigned node = pxm2node[pxm];
-	if (node == 0xff) {
-		if (nodes_weight(nodes_found) >= MAX_NUMNODES)
-			return -1;
-		node = first_unset_node(nodes_found); 
-		node_set(node, nodes_found);
-		pxm2node[pxm] = node;
-	}
-	return pxm2node[pxm];
+	return acpi_map_pxm_to_node(pxm);
 }
 
 static __init int conflicting_nodes(unsigned long start, unsigned long end)
@@ -103,10 +88,12 @@ static __init void bad_srat(void)
 	int i;
 	printk(KERN_ERR "SRAT: SRAT not used.\n");
 	acpi_numa = -1;
+	found_add_area = 0;
 	for (i = 0; i < MAX_LOCAL_APIC; i++)
 		apicid_to_node[i] = NUMA_NO_NODE;
 	for (i = 0; i < MAX_NUMNODES; i++)
 		nodes_add[i].start = nodes[i].end = 0;
+	remove_all_active_ranges();
 }
 
 static __init inline int srat_disabled(void)
@@ -154,7 +141,8 @@ acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa)
 	int pxm, node;
 	if (srat_disabled())
 		return;
-	if (pa->header.length != sizeof(struct acpi_table_processor_affinity)) {		bad_srat();
+	if (pa->header.length != sizeof(struct acpi_table_processor_affinity)) {
+		bad_srat();
 		return;
 	}
 	if (pa->flags.enabled == 0)
@@ -188,18 +176,20 @@ static int hotadd_enough_memory(struct bootnode *nd)
 
 	if (mem < 0)
 		return 0;
-	allowed = (end_pfn - e820_hole_size(0, end_pfn)) * PAGE_SIZE;
+	allowed = (end_pfn - absent_pages_in_range(0, end_pfn)) * PAGE_SIZE;
 	allowed = (allowed / 100) * hotadd_percent;
 	if (allocated + mem > allowed) {
+		unsigned long range;
 		/* Give them at least part of their hotadd memory upto hotadd_percent
 		   It would be better to spread the limit out
 		   over multiple hotplug areas, but that is too complicated
 		   right now */
 		if (allocated >= allowed)
 			return 0;
-		pages = (allowed - allocated + mem) / sizeof(struct page);
+		range = allowed - allocated;
+		pages = (range / PAGE_SIZE);
 		mem = pages * sizeof(struct page);
-		nd->end = nd->start + pages*PAGE_SIZE;
+		nd->end = nd->start + range;
 	}
 	/* Not completely fool proof, but a good sanity check */
 	addr = find_e820_area(last_area_end, end_pfn<<PAGE_SHIFT, mem);
@@ -236,8 +226,10 @@ static int reserve_hotadd(int node, unsigned long start, unsigned long end)
 	}
 
 	/* This check might be a bit too strict, but I'm keeping it for now. */
-	if (e820_hole_size(s_pfn, e_pfn) != e_pfn - s_pfn) {
-		printk(KERN_ERR "SRAT: Hotplug area has existing memory\n");
+	if (absent_pages_in_range(s_pfn, e_pfn) != e_pfn - s_pfn) {
+		printk(KERN_ERR
+			"SRAT: Hotplug area %lu -> %lu has existing memory\n",
+			s_pfn, e_pfn);
 		return -1;
 	}
 
@@ -330,6 +322,10 @@ acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma)
 
 	printk(KERN_INFO "SRAT: Node %u PXM %u %Lx-%Lx\n", node, pxm,
 	       nd->start, nd->end);
+	e820_register_active_regions(node, nd->start >> PAGE_SHIFT,
+						nd->end >> PAGE_SHIFT);
+	push_node_boundaries(node, nd->start >> PAGE_SHIFT,
+						nd->end >> PAGE_SHIFT);
 
 #ifdef RESERVE_HOTADD
  	if (ma->flags.hot_pluggable && reserve_hotadd(node, start, end) < 0) {
@@ -354,13 +350,13 @@ static int nodes_cover_memory(void)
 		unsigned long s = nodes[i].start >> PAGE_SHIFT;
 		unsigned long e = nodes[i].end >> PAGE_SHIFT;
 		pxmram += e - s;
-		pxmram -= e820_hole_size(s, e);
+		pxmram -= absent_pages_in_range(s, e);
 		pxmram -= nodes_add[i].end - nodes_add[i].start;
 		if ((long)pxmram < 0)
 			pxmram = 0;
 	}
 
-	e820ram = end_pfn - e820_hole_size(0, end_pfn);
+	e820ram = end_pfn - absent_pages_in_range(0, end_pfn);
 	/* We seem to lose 3 pages somewhere. Allow a bit of slack. */
 	if ((long)(e820ram - pxmram) >= 1*1024*1024) {
 		printk(KERN_ERR
@@ -392,8 +388,10 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end)
 	/* First clean up the node list */
 	for (i = 0; i < MAX_NUMNODES; i++) {
  		cutoff_node(i, start, end);
-		if ((nodes[i].end - nodes[i].start) < NODE_MIN_SIZE)
+		if ((nodes[i].end - nodes[i].start) < NODE_MIN_SIZE) {
 			unparse_node(i);
+			node_set_offline(i);
+		}
 	}
 
 	if (acpi_numa <= 0)
@@ -431,17 +429,6 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end)
 	return 0;
 }
 
-static int node_to_pxm(int n)
-{
-       int i;
-       if (pxm2node[n] == n)
-               return n;
-       for (i = 0; i < 256; i++)
-               if (pxm2node[i] == n)
-                       return i;
-       return 0;
-}
-
 void __init srat_reserve_add_area(int nodeid)
 {
 	if (found_add_area && nodes_add[nodeid].end) {