x86, NUMA: Drop @start/last_pfn from initmem_init()

initmem_init() extensively accesses and modifies global data structures and the parameters aren't even followed depending on which path is being used. Drop @start/last_pfn and let it deal with @max_pfn directly. This is in preparation for further NUMA init cleanups. - v2: x86-32 initmem_init() weren't updated breaking 32bit builds. Fixed. Found by Yinghai. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Shaohui Zheng <shaohui.zheng@intel.com> Cc: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@linux.intel.com>
mariux64 · Feb 16, 2011 · 86ef4db · 86ef4db
1 parent 13081df
commit 86ef4db
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Showing 6 changed files with 14 additions and 23 deletions.
diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h
@@ -56,8 +56,7 @@ extern unsigned long init_memory_mapping(unsigned long start,
 
 void init_memory_mapping_high(void);
 
-extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn,
-				int acpi, int k8);
+extern void initmem_init(int acpi, int k8);
 extern void free_initmem(void);
 
 #endif	/* !__ASSEMBLY__ */

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
@@ -1003,7 +1003,7 @@ void __init setup_arch(char **cmdline_p)
 		amd = !amd_numa_init(0, max_pfn);
 #endif
 
-	initmem_init(0, max_pfn, acpi, amd);
+	initmem_init(acpi, amd);
 	memblock_find_dma_reserve();
 	dma32_reserve_bootmem();
 

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
@@ -644,8 +644,7 @@ void __init find_low_pfn_range(void)
 }
 
 #ifndef CONFIG_NEED_MULTIPLE_NODES
-void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,
-				int acpi, int k8)
+void __init initmem_init(int acpi, int k8)
 {
 #ifdef CONFIG_HIGHMEM
 	highstart_pfn = highend_pfn = max_pfn;

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
@@ -603,10 +603,9 @@ kernel_physical_mapping_init(unsigned long start,
 }
 
 #ifndef CONFIG_NUMA
-void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,
-				int acpi, int k8)
+void __init initmem_init(int acpi, int k8)
 {
-	memblock_x86_register_active_regions(0, start_pfn, end_pfn);
+	memblock_x86_register_active_regions(0, 0, max_pfn);
 	init_memory_mapping_high();
 }
 #endif

diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
@@ -352,8 +352,7 @@ static void init_remap_allocator(int nid)
 		(ulong) node_remap_end_vaddr[nid]);
 }
 
-void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,
-				int acpi, int k8)
+void __init initmem_init(int acpi, int k8)
 {
 	int nid;
 	long kva_target_pfn;

diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
@@ -579,28 +579,24 @@ static int __init numa_emulation(unsigned long start_pfn,
 }
 #endif /* CONFIG_NUMA_EMU */
 
-void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn,
-				int acpi, int amd)
+void __init initmem_init(int acpi, int amd)
 {
 	int i;
 
 	nodes_clear(node_possible_map);
 	nodes_clear(node_online_map);
 
 #ifdef CONFIG_NUMA_EMU
-	setup_physnodes(start_pfn << PAGE_SHIFT, last_pfn << PAGE_SHIFT,
-			acpi, amd);
-	if (cmdline && !numa_emulation(start_pfn, last_pfn, acpi, amd))
+	setup_physnodes(0, max_pfn << PAGE_SHIFT, acpi, amd);
+	if (cmdline && !numa_emulation(0, max_pfn, acpi, amd))
 		return;
-	setup_physnodes(start_pfn << PAGE_SHIFT, last_pfn << PAGE_SHIFT,
-			acpi, amd);
+	setup_physnodes(0, max_pfn << PAGE_SHIFT, acpi, amd);
 	nodes_clear(node_possible_map);
 	nodes_clear(node_online_map);
 #endif
 
 #ifdef CONFIG_ACPI_NUMA
-	if (!numa_off && acpi && !acpi_scan_nodes(start_pfn << PAGE_SHIFT,
-						  last_pfn << PAGE_SHIFT))
+	if (!numa_off && acpi && !acpi_scan_nodes(0, max_pfn << PAGE_SHIFT))
 		return;
 	nodes_clear(node_possible_map);
 	nodes_clear(node_online_map);
@@ -616,8 +612,7 @@ void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn,
 	       numa_off ? "NUMA turned off" : "No NUMA configuration found");
 
 	printk(KERN_INFO "Faking a node at %016lx-%016lx\n",
-	       start_pfn << PAGE_SHIFT,
-	       last_pfn << PAGE_SHIFT);
+	       0LU, max_pfn << PAGE_SHIFT);
 	/* setup dummy node covering all memory */
 	memnode_shift = 63;
 	memnodemap = memnode.embedded_map;
@@ -626,9 +621,9 @@ void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn,
 	node_set(0, node_possible_map);
 	for (i = 0; i < MAX_LOCAL_APIC; i++)
 		set_apicid_to_node(i, NUMA_NO_NODE);
-	memblock_x86_register_active_regions(0, start_pfn, last_pfn);
+	memblock_x86_register_active_regions(0, 0, max_pfn);
 	init_memory_mapping_high();
-	setup_node_bootmem(0, start_pfn << PAGE_SHIFT, last_pfn << PAGE_SHIFT);
+	setup_node_bootmem(0, 0, max_pfn << PAGE_SHIFT);
 	numa_init_array();
 }