releases/2.6.32.10/oprofile-x86-remove-node-check-in-amd-ibs-initialization.patch

   1 From 89baaaa98a10cad5cc8516c7208b02d9fc711890 Mon Sep 17 00:00:00 2001
   2 From: Robert Richter <robert.richter@amd.com>
   3 Date: Thu, 28 Jan 2010 16:50:45 +0100
   4 Subject: oprofile/x86: remove node check in AMD IBS initialization
   5
   6 From: Robert Richter <robert.richter@amd.com>
   7
   8 commit 89baaaa98a10cad5cc8516c7208b02d9fc711890 upstream.
   9
  10 Standard AMD systems have the same number of nodes as there are
  11 northbridge devices. However, there may kernel configurations
  12 (especially for 32 bit) or system setups exist, where the node number
  13 is different or it can not be detected properly. Thus the check is not
  14 reliable and may fail though IBS setup was fine. For this reason it is
  15 better to remove the check.
  16
  17 Signed-off-by: Robert Richter <robert.richter@amd.com>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  19
  20 ---
  21  arch/x86/oprofile/op_model_amd.c |   10 ----------
  22  1 file changed, 10 deletions(-)
  23
  24 --- a/arch/x86/oprofile/op_model_amd.c
  25 +++ b/arch/x86/oprofile/op_model_amd.c
  26 @@ -386,16 +386,6 @@ static int init_ibs_nmi(void)
  27                 return 1;
  28         }
  29
  30 -#ifdef CONFIG_NUMA
  31 -       /* Sanity check */
  32 -       /* Works only for 64bit with proper numa implementation. */
  33 -       if (nodes != num_possible_nodes()) {
  34 -               printk(KERN_DEBUG "Failed to setup CPU node(s) for IBS, "
  35 -                       "found: %d, expected %d",
  36 -                       nodes, num_possible_nodes());
  37 -               return 1;
  38 -       }
  39 -#endif
  40         return 0;
  41  }
  42