MIPS: Loongson64: Clean up numa.c

(1) Replace nid_to_addroffset() with nid_to_addrbase() and then remove the
related useless code.

(2) Since end_pfn = start_pfn + node_psize, use "node_psize" instead of
"end_pfn - start_pfn" to avoid the redundant calculation.

(3) After commit 6fbde6b492df ("MIPS: Loongson64: Move files to the
top-level directory"), CONFIG_ZONE_DMA32 is always set for Loongson64
due to MACH_LOONGSON64 selects ZONE_DMA32, so no need to use ifdef any
more, just remove it.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

diff --git a/arch/mips/include/asm/mach-loongson64/mmzone.h b/arch/mips/include/asm/mach-loongson64/mmzone.h
index 3a25dbd..c3f0f7a 100644 (file)
--- a/arch/mips/include/asm/mach-loongson64/mmzone.h
+++ b/arch/mips/include/asm/mach-loongson64/mmzone.h
@@ -11,13 +11,9 @@
 
 #include <boot_param.h>
 #define NODE_ADDRSPACE_SHIFT 44
-#define NODE0_ADDRSPACE_OFFSET 0x000000000000UL
-#define NODE1_ADDRSPACE_OFFSET 0x100000000000UL
-#define NODE2_ADDRSPACE_OFFSET 0x200000000000UL
-#define NODE3_ADDRSPACE_OFFSET 0x300000000000UL
 
 #define pa_to_nid(addr)  (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT)
-#define nid_to_addrbase(nid) ((nid) << NODE_ADDRSPACE_SHIFT)
+#define nid_to_addrbase(nid) ((unsigned long)(nid) << NODE_ADDRSPACE_SHIFT)
 
 extern struct pglist_data *__node_data[];
 

diff --git a/arch/mips/loongson64/numa.c b/arch/mips/loongson64/numa.c
index ea8bb1b..cf9459f 100644 (file)
--- a/arch/mips/loongson64/numa.c
+++ b/arch/mips/loongson64/numa.c
@@ -98,27 +98,6 @@ static void __init init_topology_matrix(void)
        }
 }
 
-static unsigned long nid_to_addroffset(unsigned int nid)
-{
-       unsigned long result;
-       switch (nid) {
-       case 0:
-       default:
-               result = NODE0_ADDRSPACE_OFFSET;
-               break;
-       case 1:
-               result = NODE1_ADDRSPACE_OFFSET;
-               break;
-       case 2:
-               result = NODE2_ADDRSPACE_OFFSET;
-               break;
-       case 3:
-               result = NODE3_ADDRSPACE_OFFSET;
-               break;
-       }
-       return result;
-}
-
 static void __init szmem(unsigned int node)
 {
        u32 i, mem_type;
@@ -146,7 +125,7 @@ static void __init szmem(unsigned int node)
                        pr_info("       start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
                                start_pfn, end_pfn, num_physpages);
                        memblock_add_node(PFN_PHYS(start_pfn),
-                               PFN_PHYS(end_pfn - start_pfn), node);
+                               PFN_PHYS(node_psize), node);
                        break;
                case SYSTEM_RAM_HIGH:
                        start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT;
@@ -158,7 +137,7 @@ static void __init szmem(unsigned int node)
                        pr_info("       start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
                                start_pfn, end_pfn, num_physpages);
                        memblock_add_node(PFN_PHYS(start_pfn),
-                               PFN_PHYS(end_pfn - start_pfn), node);
+                               PFN_PHYS(node_psize), node);
                        break;
                case SYSTEM_RAM_RESERVED:
                        pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
@@ -175,7 +154,7 @@ static void __init node_mem_init(unsigned int node)
        unsigned long node_addrspace_offset;
        unsigned long start_pfn, end_pfn;
 
-       node_addrspace_offset = nid_to_addroffset(node);
+       node_addrspace_offset = nid_to_addrbase(node);
        pr_info("Node%d's addrspace_offset is 0x%lx\n",
                        node, node_addrspace_offset);
 
@@ -242,9 +221,7 @@ void __init paging_init(void)
        unsigned long zones_size[MAX_NR_ZONES] = {0, };
 
        pagetable_init();
-#ifdef CONFIG_ZONE_DMA32
        zones_size[ZONE_DMA32] = MAX_DMA32_PFN;
-#endif
        zones_size[ZONE_NORMAL] = max_low_pfn;
        free_area_init(zones_size);
 }