x86: alloc dyn_array all together

so could spare some memory with small alignment in bootmem

also tighten the alignment checking, and make print out less debug info.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 11 insertions, 5 deletions

diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 13ba7a83808d..2b7dab699e83 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -140,26 +140,31 @@ static void __init setup_cpu_pda_map(void)
  */
 void __init setup_per_cpu_areas(void)
 {
-        ssize_t size, old_size;
+        ssize_t size, old_size, da_size;
         char *ptr;
         int cpu;
+        unsigned long align = 1;
 
         /* Setup cpu_pda map */
         setup_cpu_pda_map();
 
         /* Copy section for each CPU (we discard the original) */
         old_size = PERCPU_ENOUGH_ROOM;
-        size = old_size + per_cpu_dyn_array_size();
+        da_size = per_cpu_dyn_array_size(&align);
+        align = max_t(unsigned long, PAGE_SIZE, align);
+        size = roundup(old_size + da_size, align);
         printk(KERN_INFO "PERCPU: Allocating %zd bytes of per cpu data\n",
                           size);
 
         for_each_possible_cpu(cpu) {
 #ifndef CONFIG_NEED_MULTIPLE_NODES
-                ptr = alloc_bootmem_pages(size);
+                ptr = __alloc_bootmem(size, align,
+                                 __pa(MAX_DMA_ADDRESS));
 #else
                 int node = early_cpu_to_node(cpu);
                 if (!node_online(node) || !NODE_DATA(node)) {
-                        ptr = alloc_bootmem_pages(size);
+                        ptr = __alloc_bootmem(size, align,
+                                         __pa(MAX_DMA_ADDRESS));
                         printk(KERN_INFO
                                "cpu %d has no node %d or node-local memory\n",
                                 cpu, node);
@@ -168,7 +173,8 @@ void __init setup_per_cpu_areas(void)
                                          cpu, __pa(ptr));
                 }
                 else {
-                        ptr = alloc_bootmem_pages_node(NODE_DATA(node), size);
+                        ptr = __alloc_bootmem_node(NODE_DATA(node), size, align,
+                                                        __pa(MAX_DMA_ADDRESS));
                         if (ptr)
                                 printk(KERN_DEBUG "per cpu data for cpu%d on node%d at %016lx\n",
                                          cpu, node, __pa(ptr));