X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fmm%2Fnuma.c;h=a300d254aac6518dc473ecf405bebf6943b6bfeb;hb=37969581301e50872a1ae84dc73962b5f7ee6b76;hp=de45aa82d97b11c133fb14ccab6fbdf2e2bce450;hpb=aabded9c3aab5160ae2ca3dd1fa0fa37f3d510e4;p=~andy%2Flinux

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index de45aa82d97..a300d254aac 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -24,6 +24,8 @@
 
 static int numa_enabled = 1;
 
+static char *cmdline __initdata;
+
 static int numa_debug;
 #define dbg(args...) if (numa_debug) { printk(KERN_INFO args); }
 
@@ -39,6 +41,53 @@ static bootmem_data_t __initdata plat_node_bdata[MAX_NUMNODES];
 static int min_common_depth;
 static int n_mem_addr_cells, n_mem_size_cells;
 
+static int __cpuinit fake_numa_create_new_node(unsigned long end_pfn,
+						unsigned int *nid)
+{
+	unsigned long long mem;
+	char *p = cmdline;
+	static unsigned int fake_nid;
+	static unsigned long long curr_boundary;
+
+	/*
+	 * Modify node id, iff we started creating NUMA nodes
+	 * We want to continue from where we left of the last time
+	 */
+	if (fake_nid)
+		*nid = fake_nid;
+	/*
+	 * In case there are no more arguments to parse, the
+	 * node_id should be the same as the last fake node id
+	 * (we've handled this above).
+	 */
+	if (!p)
+		return 0;
+
+	mem = memparse(p, &p);
+	if (!mem)
+		return 0;
+
+	if (mem < curr_boundary)
+		return 0;
+
+	curr_boundary = mem;
+
+	if ((end_pfn << PAGE_SHIFT) > mem) {
+		/*
+		 * Skip commas and spaces
+		 */
+		while (*p == ',' || *p == ' ' || *p == '\t')
+			p++;
+
+		cmdline = p;
+		fake_nid++;
+		*nid = fake_nid;
+		dbg("created new fake_node with id %d\n", fake_nid);
+		return 1;
+	}
+	return 0;
+}
+
 static void __cpuinit map_cpu_to_node(int cpu, int node)
 {
 	numa_cpu_lookup_table[cpu] = node;
@@ -307,9 +356,9 @@ static void __init parse_drconf_memory(struct device_node *memory)
 	const unsigned int *lm, *dm, *aa;
 	unsigned int ls, ld, la;
 	unsigned int n, aam, aalen;
-	unsigned long lmb_size, size;
+	unsigned long lmb_size, size, start;
 	int nid, default_nid = 0;
-	unsigned int start, ai, flags;
+	unsigned int ai, flags;
 
 	lm = of_get_property(memory, "ibm,lmb-size", &ls);
 	dm = of_get_property(memory, "ibm,dynamic-memory", &ld);
@@ -344,6 +393,9 @@ static void __init parse_drconf_memory(struct device_node *memory)
 			if (nid == 0xffff || nid >= MAX_NUMNODES)
 				nid = default_nid;
 		}
+
+		fake_numa_create_new_node(((start + lmb_size) >> PAGE_SHIFT),
+						&nid);
 		node_set_online(nid);
 
 		size = numa_enforce_memory_limit(start, lmb_size);
@@ -429,6 +481,8 @@ new_range:
 		nid = of_node_to_nid_single(memory);
 		if (nid < 0)
 			nid = default_nid;
+
+		fake_numa_create_new_node(((start + size) >> PAGE_SHIFT), &nid);
 		node_set_online(nid);
 
 		if (!(size = numa_enforce_memory_limit(start, size))) {
@@ -461,7 +515,7 @@ static void __init setup_nonnuma(void)
 	unsigned long top_of_ram = lmb_end_of_DRAM();
 	unsigned long total_ram = lmb_phys_mem_size();
 	unsigned long start_pfn, end_pfn;
-	unsigned int i;
+	unsigned int i, nid = 0;
 
 	printk(KERN_DEBUG "Top of RAM: 0x%lx, Total RAM: 0x%lx\n",
 	       top_of_ram, total_ram);
@@ -471,9 +525,11 @@ static void __init setup_nonnuma(void)
 	for (i = 0; i < lmb.memory.cnt; ++i) {
 		start_pfn = lmb.memory.region[i].base >> PAGE_SHIFT;
 		end_pfn = start_pfn + lmb_size_pages(&lmb.memory, i);
-		add_active_range(0, start_pfn, end_pfn);
+
+		fake_numa_create_new_node(end_pfn, &nid);
+		add_active_range(nid, start_pfn, end_pfn);
+		node_set_online(nid);
 	}
-	node_set_online(0);
 }
 
 void __init dump_numa_cpu_topology(void)
@@ -675,7 +731,7 @@ void __init do_init_bootmem(void)
 				dbg("reserve_bootmem %lx %lx\n", physbase,
 				    size);
 				reserve_bootmem_node(NODE_DATA(nid), physbase,
-						     size);
+						     size, BOOTMEM_DEFAULT);
 			}
 		}
 
@@ -702,6 +758,10 @@ static int __init early_numa(char *p)
 	if (strstr(p, "debug"))
 		numa_debug = 1;
 
+	p = strstr(p, "fake=");
+	if (p)
+		cmdline = p + strlen("fake=");
+
 	return 0;
 }
 early_param("numa", early_numa);