src/patches/suse-2.6.27.31/patches.arch/x86-mce-use-round_jiffies-instead-round_jiffies_relative

   1 From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
   2 Date: Wed, 11 Mar 2009 01:14:26 +0000 (+0900)
   3 Subject: x86, mce: use round_jiffies() instead round_jiffies_relative()
   4 Patch-mainline: 2.6.30-rc3
   5 Git-commit: 5490fa96735ce0e2af270c0868987d644b9a38ec
   6 References: bnc#507557
   7
   8 x86, mce: use round_jiffies() instead round_jiffies_relative()
   9
  10 Impact: saving power _very_ little
  11
  12 round_jiffies() round up absolute jiffies to full second.
  13 round_jiffies_relative() round up relative jiffies to full second.
  14
  15 The "t->expires" is absolute jiffies. Then, round_jiffies() should be
  16 used instead round_jiffies_relative().
  17
  18 Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
  19 Cc: Andi Kleen <andi@firstfloor.org>
  20 Cc: H. Peter Anvin <hpa@linux.intel.com>
  21 Signed-off-by: H. Peter Anvin <hpa@zytor.com>
  22 Acked-by: Jeff Mahoney <jeffm@suse.com>
  23
  24 ---
  25  arch/x86/kernel/cpu/mcheck/mce_64.c |    4 ++--
  26  1 file changed, 2 insertions(+), 2 deletions(-)
  27
  28 --- a/arch/x86/kernel/cpu/mcheck/mce_64.c
  29 +++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
  30 @@ -509,7 +509,7 @@ static void mce_init_timer(void)
  31         if (!next_interval)
  32                 return;
  33         setup_timer(t, mcheck_timer, smp_processor_id());
  34 -       t->expires = round_jiffies_relative(jiffies + next_interval);
  35 +       t->expires = round_jiffies(jiffies + next_interval);
  36         add_timer(t);
  37  }
  38
  39 @@ -912,7 +912,7 @@ static int __cpuinit mce_cpu_callback(st
  40                 break;
  41         case CPU_DOWN_FAILED:
  42         case CPU_DOWN_FAILED_FROZEN:
  43 -               t->expires = round_jiffies_relative(jiffies + next_interval);
  44 +               t->expires = round_jiffies(jiffies + next_interval);
  45                 add_timer_on(t, cpu);
  46                 break;
  47         }