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

From: Roland Dreier
Date: Thu Oct 15 2009 - 17:22:39 EST


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@xxxxxxxxx>
---
arch/x86/kernel/cpu/mcheck/mce.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index b1598a9..721a77c 100644
--- 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
--
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