x86: Don't print number of MCE banks for every CPU

The MCE initialization code explicitly says it doesn't handle
asymmetric configurations where different CPUs support different
numbers of MCE banks, and it prints a big warning in that case.

Therefore, printing the "mce: CPU supports <x> MCE banks"
message into the kernel log for every CPU is pure redundancy
that clutters the log significantly for systems with lots of
CPUs.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
LKML-Reference: <adaeip473qt.fsf@cisco.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index b1598a9..721a77c 100644 (file)
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1214,7 +1214,8 @@ static int __cpuinit mce_cap_init(void)
        rdmsrl(MSR_IA32_MCG_CAP, cap);
 
        b = cap & MCG_BANKCNT_MASK;
-       printk(KERN_INFO "mce: CPU supports %d MCE banks\n", b);
+       if (!banks)
+               printk(KERN_INFO "mce: CPU supports %d MCE banks\n", b);
 
        if (b > MAX_NR_BANKS) {
                printk(KERN_WARNING