commit 59be5a8e8ce765cf739ec7f07176219972de7481
author Yinghai Lu <yinghai@kernel.org> Wed Feb 10 01:20:28 2010 -0800
committer H. Peter Anvin <hpa@zytor.com> Fri Feb 12 09:42:39 2010 -0800
tree 0dead91be8e1ccbbb0514877d4d1c1047cf401f0
parent 53db62a2529280ff216c941d8a2650204547e44a

x86: Make 32bit support NO_BOOTMEM

Let's make 32bit consistent with 64bit.

-v2: Andrew pointed out for 32bit that we should use -1ULL

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-25-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

arch/x86/Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 9543984..29f9efb 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -571,7 +571,6 @@
 config NO_BOOTMEM
 	default y
 	bool "Disable Bootmem code"
-	depends on X86_64
 	---help---
 	  Use early_res directly instead of bootmem before slab is ready.
 		- allocator (buddy) [generic]

arch/x86/kernel/early_res.c

diff --git a/arch/x86/kernel/early_res.c b/arch/x86/kernel/early_res.c
index dbf08bd..656cdf8 100644
--- a/arch/x86/kernel/early_res.c
+++ b/arch/x86/kernel/early_res.c
@@ -354,6 +354,9 @@
 
 	/* need to go over early_node_map to find out good range for node */
 	nr_range = add_from_early_node_map(range, count, nr_range, nodeid);
+#ifdef CONFIG_X86_32
+	subtract_range(range, count, max_low_pfn, -1ULL);
+#endif
 	subtract_early_res(range, count);
 	nr_range = clean_sort_range(range, count);
 

arch/x86/mm/init_32.c

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 2dccde0..262867a 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -748,6 +748,7 @@
 	free_area_init_nodes(max_zone_pfns);
 }
 
+#ifndef CONFIG_NO_BOOTMEM
 static unsigned long __init setup_node_bootmem(int nodeid,
 				 unsigned long start_pfn,
 				 unsigned long end_pfn,
@@ -767,9 +768,11 @@
 
 	return bootmap + bootmap_size;
 }
+#endif
 
 void __init setup_bootmem_allocator(void)
 {
+#ifndef CONFIG_NO_BOOTMEM
 	int nodeid;
 	unsigned long bootmap_size, bootmap;
 	/*
@@ -781,11 +784,13 @@
 	if (bootmap == -1L)
 		panic("Cannot find bootmem map of size %ld\n", bootmap_size);
 	reserve_early(bootmap, bootmap + bootmap_size, "BOOTMAP");
+#endif
 
 	printk(KERN_INFO "  mapped low ram: 0 - %08lx\n",
 		 max_pfn_mapped<<PAGE_SHIFT);
 	printk(KERN_INFO "  low ram: 0 - %08lx\n", max_low_pfn<<PAGE_SHIFT);
 
+#ifndef CONFIG_NO_BOOTMEM
 	for_each_online_node(nodeid) {
 		 unsigned long start_pfn, end_pfn;
 
@@ -803,6 +808,7 @@
 		bootmap = setup_node_bootmem(nodeid, start_pfn, end_pfn,
 						 bootmap);
 	}
+#endif
 
 	after_bootmem = 1;
 }

arch/x86/mm/numa_32.c

diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index b20760c..809baaa 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -418,7 +418,10 @@
 
 	for_each_online_node(nid) {
 		memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
+		NODE_DATA(nid)->node_id = nid;
+#ifndef CONFIG_NO_BOOTMEM
 		NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
+#endif
 	}
 
 	setup_bootmem_allocator();