x86: rename find_max_pfn() to propagate_e820_map()

this function doesnt just 'find' the max_pfn - it also has
other side-effects such as registering sparse memory maps.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/e820_32.c

@@ -475,7 +475,7 @@ int __init copy_e820_map(struct e820entry *biosmap, int nr_map)
 /*
  * Find the highest page frame number we have available
  */
-void __init find_max_pfn(void)
+void __init propagate_e820_map(void)
 {
 	int i;
 
@@ -704,7 +704,7 @@ static int __init parse_memmap(char *arg)
 		 * size before original memory map is
 		 * reset.
 		 */
-		find_max_pfn();
+		propagate_e820_map();
 		saved_max_pfn = max_pfn;
 #endif
 		e820.nr_map = 0;

arch/x86/kernel/setup_32.c

@@ -812,10 +812,10 @@ void __init setup_arch(char **cmdline_p)
 		efi_init();
 
 	/* update e820 for memory not covered by WB MTRRs */
-	find_max_pfn();
+	propagate_e820_map();
 	mtrr_bp_init();
 	if (mtrr_trim_uncached_memory(max_pfn))
-		find_max_pfn();
+		propagate_e820_map();
 
 	max_low_pfn = setup_memory();
 

arch/x86/mm/discontig_32.c

@@ -120,7 +120,7 @@ int __init get_memcfg_numa_flat(void)
 	printk("NUMA - single node, flat memory mode\n");
 
 	/* Run the memory configuration and find the top of memory. */
-	find_max_pfn();
+	propagate_e820_map();
 	node_start_pfn[0] = 0;
 	node_end_pfn[0] = max_pfn;
 	memory_present(0, 0, max_pfn);
@@ -134,7 +134,7 @@ int __init get_memcfg_numa_flat(void)
 /*
  * Find the highest page frame number we have available for the node
  */
-static void __init find_max_pfn_node(int nid)
+static void __init propagate_e820_map_node(int nid)
 {
 	if (node_end_pfn[nid] > max_pfn)
 		node_end_pfn[nid] = max_pfn;
@@ -379,7 +379,7 @@ unsigned long __init setup_memory(void)
 	printk("High memory starts at vaddr %08lx\n",
 			(ulong) pfn_to_kaddr(highstart_pfn));
 	for_each_online_node(nid)
-		find_max_pfn_node(nid);
+		propagate_e820_map_node(nid);
 
 	memset(NODE_DATA(0), 0, sizeof(struct pglist_data));
 	NODE_DATA(0)->bdata = &node0_bdata;

include/asm-x86/e820_32.h

@@ -24,7 +24,7 @@ extern void update_e820(void);
 extern int e820_all_mapped(unsigned long start, unsigned long end,
 			   unsigned type);
 extern int e820_any_mapped(u64 start, u64 end, unsigned type);
-extern void find_max_pfn(void);
+extern void propagate_e820_map(void);
 extern void register_bootmem_low_pages(unsigned long max_low_pfn);
 extern void add_memory_region(unsigned long long start,
 			      unsigned long long size, int type);