linux-kernel - [PATCH UPDATED 16/23] sparc: Use HAVE_MEMBLOCK_NODE

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Date:	Mon, 8 Aug 2011 14:30:39 +0200
From:	Tejun Heo <tj@...nel.org>
To:	benh@...nel.crashing.org, yinghai@...nel.org, hpa@...or.com,
	tony.luck@...el.com, ralf@...ux-mips.org, schwidefsky@...ibm.com,
	liqin.chen@...plusct.com, lethal@...ux-sh.org, davem@...emloft.net,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Cc:	mingo@...hat.com, sparclinux@...r.kernel.org
Subject: [PATCH UPDATED 16/23] sparc: Use HAVE_MEMBLOCK_NODE_MAP

sparc doesn't access early_node_map[] directly and enabling
HAVE_MEMBLOCK_NODE_MAP is trivial - replacing add_active_range() calls
with memblock_set_node() and selecting HAVE_MEMBLOCK_NODE_MAP is
enough.

-v2: Use select in Kconfig instead as suggested by Sam Ravnborg.

Signed-off-by: Tejun Heo <tj@...nel.org>
Acked-by: "David S. Miller" <davem@...emloft.net>
Cc: Sam Ravnborg <sam@...nborg.org>
Cc: sparclinux@...r.kernel.org
---
Acked-by added and select used in Kconfig instead.

Thanks.

 arch/sparc/Kconfig      |    1 +
 arch/sparc/mm/init_64.c |   24 ++++--------------------
 2 files changed, 5 insertions(+), 20 deletions(-)

Index: work/arch/sparc/Kconfig
===================================================================
--- work.orig/arch/sparc/Kconfig
+++ work/arch/sparc/Kconfig
@@ -42,6 +42,7 @@ config SPARC64
 	select HAVE_KRETPROBES
 	select HAVE_KPROBES
 	select HAVE_MEMBLOCK
+	select HAVE_MEMBLOCK_NODE_MAP
 	select HAVE_SYSCALL_WRAPPERS
 	select HAVE_DYNAMIC_FTRACE
 	select HAVE_FTRACE_MCOUNT_RECORD
Index: work/arch/sparc/mm/init_64.c
===================================================================
--- work.orig/arch/sparc/mm/init_64.c
+++ work/arch/sparc/mm/init_64.c
@@ -811,7 +811,7 @@ static u64 memblock_nid_range(u64 start,
 #endif
 
 /* This must be invoked after performing all of the necessary
- * add_active_range() calls for 'nid'.  We need to be able to get
+ * memblock_set_node() calls for 'nid'.  We need to be able to get
  * correct data from get_pfn_range_for_nid().
  */
 static void __init allocate_node_data(int nid)
@@ -982,14 +982,11 @@ static void __init add_node_ranges(void)
 
 			this_end = memblock_nid_range(start, end, &nid);
 
-			numadbg("Adding active range nid[%d] "
+			numadbg("Setting memblock NUMA node nid[%d] "
 				"start[%lx] end[%lx]\n",
 				nid, start, this_end);
 
-			add_active_range(nid,
-					 start >> PAGE_SHIFT,
-					 this_end >> PAGE_SHIFT);
-
+			memblock_set_node(start, this_end - start, nid);
 			start = this_end;
 		}
 	}
@@ -1277,7 +1274,6 @@ static void __init bootmem_init_nonnuma(
 {
 	unsigned long top_of_ram = memblock_end_of_DRAM();
 	unsigned long total_ram = memblock_phys_mem_size();
-	struct memblock_region *reg;
 
 	numadbg("bootmem_init_nonnuma()\n");
 
@@ -1287,20 +1283,8 @@ static void __init bootmem_init_nonnuma(
 	       (top_of_ram - total_ram) >> 20);
 
 	init_node_masks_nonnuma();
-
-	for_each_memblock(memory, reg) {
-		unsigned long start_pfn, end_pfn;
-
-		if (!reg->size)
-			continue;
-
-		start_pfn = memblock_region_memory_base_pfn(reg);
-		end_pfn = memblock_region_memory_end_pfn(reg);
-		add_active_range(0, start_pfn, end_pfn);
-	}
-
+	memblock_set_node(0, (phys_addr_t)ULLONG_MAX, 0);
 	allocate_node_data(0);
-
 	node_set_online(0);
 }
 
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