Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / arch / x86 / kernel / tlb_uv.c

diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c
index ed0c337..124d40c 100644 (file)
--- a/arch/x86/kernel/tlb_uv.c
+++ b/arch/x86/kernel/tlb_uv.c
@@ -715,7 +715,12 @@ uv_activation_descriptor_init(int node, int pnode)
        struct bau_desc *adp;
        struct bau_desc *ad2;
 
-       adp = (struct bau_desc *)kmalloc_node(16384, GFP_KERNEL, node);
+       /*
+        * each bau_desc is 64 bytes; there are 8 (UV_ITEMS_PER_DESCRIPTOR)
+        * per cpu; and up to 32 (UV_ADP_SIZE) cpu's per blade
+        */
+       adp = (struct bau_desc *)kmalloc_node(sizeof(struct bau_desc)*
+               UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR, GFP_KERNEL, node);
        BUG_ON(!adp);
 
        pa = uv_gpa(adp); /* need the real nasid*/
@@ -729,7 +734,13 @@ uv_activation_descriptor_init(int node, int pnode)
                                      (n << UV_DESC_BASE_PNODE_SHIFT | m));
        }
 
-       for (i = 0, ad2 = adp; i < UV_ACTIVATION_DESCRIPTOR_SIZE; i++, ad2++) {
+       /*
+        * initializing all 8 (UV_ITEMS_PER_DESCRIPTOR) descriptors for each
+        * cpu even though we only use the first one; one descriptor can
+        * describe a broadcast to 256 nodes.
+        */
+       for (i = 0, ad2 = adp; i < (UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR);
+               i++, ad2++) {
                memset(ad2, 0, sizeof(struct bau_desc));
                ad2->header.sw_ack_flag = 1;
                /*
@@ -832,7 +843,7 @@ static int __init uv_bau_init(void)
                return 0;
 
        for_each_possible_cpu(cur_cpu)
-               alloc_cpumask_var_node(&per_cpu(uv_flush_tlb_mask, cur_cpu),
+               zalloc_cpumask_var_node(&per_cpu(uv_flush_tlb_mask, cur_cpu),
                                       GFP_KERNEL, cpu_to_node(cur_cpu));
 
        uv_bau_retry_limit = 1;