mm/tile: prepare for removing num_physpages and simplify mem_init()

Prepare for removing num_physpages and simplify mem_init().

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 8 insertions, 8 deletions

diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index 41818e3ce97e..68b542677f6a 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -329,6 +329,7 @@ static void __init setup_memory(void)
 #if defined(CONFIG_HIGHMEM) || defined(__tilegx__)
         long lowmem_pages;
 #endif
+        unsigned long physpages = 0;
 
         /* We are using a char to hold the cpu_2_node[] mapping */
         BUILD_BUG_ON(MAX_NUMNODES > 127);
@@ -388,8 +389,8 @@ static void __init setup_memory(void)
                                 continue;
                         }
                 }
-                if (num_physpages + PFN_DOWN(range.size) > maxmem_pfn) {
-                        int max_size = maxmem_pfn - num_physpages;
+                if (physpages + PFN_DOWN(range.size) > maxmem_pfn) {
+                        int max_size = maxmem_pfn - physpages;
                         if (max_size > 0) {
                                 pr_err("Maxmem reduced node %d to %d pages\n",
                                        i, max_size);
@@ -446,7 +447,7 @@ static void __init setup_memory(void)
                 node_start_pfn[i] = start;
                 node_end_pfn[i] = end;
                 node_controller[i] = range.controller;
-                num_physpages += size;
+                physpages += size;
                 max_pfn = end;
 
                 /* Mark node as online */
@@ -465,7 +466,7 @@ static void __init setup_memory(void)
          * we're willing to use at 8 million pages (32GB of 4KB pages).
          */
         cap = 8 * 1024 * 1024;  /* 8 million pages */
-        if (num_physpages > cap) {
+        if (physpages > cap) {
                 int num_nodes = num_online_nodes();
                 int cap_each = cap / num_nodes;
                 unsigned long dropped_pages = 0;
@@ -476,10 +477,10 @@ static void __init setup_memory(void)
                                 node_end_pfn[i] = node_start_pfn[i] + cap_each;
                         }
                 }
-                num_physpages -= dropped_pages;
+                physpages -= dropped_pages;
                 pr_warning("Only using %ldMB memory;"
                        " ignoring %ldMB.\n",
-                       num_physpages >> (20 - PAGE_SHIFT),
+                       physpages >> (20 - PAGE_SHIFT),
                        dropped_pages >> (20 - PAGE_SHIFT));
                 pr_warning("Consider using a larger page size.\n");
         }
@@ -497,7 +498,7 @@ static void __init setup_memory(void)
 
         lowmem_pages = (mappable_physpages > MAXMEM_PFN) ?
                 MAXMEM_PFN : mappable_physpages;
-        highmem_pages = (long) (num_physpages - lowmem_pages);
+        highmem_pages = (long) (physpages - lowmem_pages);
 
         pr_notice("%ldMB HIGHMEM available.\n",
                pages_to_mb(highmem_pages > 0 ? highmem_pages : 0));
@@ -514,7 +515,6 @@ static void __init setup_memory(void)
                 pr_warning("Use a HIGHMEM enabled kernel.\n");
                 max_low_pfn = MAXMEM_PFN;
                 max_pfn = MAXMEM_PFN;
-                num_physpages = MAXMEM_PFN;
                 node_end_pfn[0] = MAXMEM_PFN;
         } else {
                 pr_notice("%ldMB memory available.\n",