From: Bhavana Nagendra <bnagendr@redhat.com>
Subject: RHEL5.1 [PATCH]: Identifies correct number of processors in powernow-k8  driver
Date: Fri, 16 Mar 2007 13:01:44 -0400
Bugzilla: 229716
Message-Id: <45FACD78.8050208@redhat.com>
Changelog: [cpufreq] Identifies correct number of processors in powernow-k8


BZ 229716

While booting a system with Dual Core AMD processors, powernow-k8 incorrectly
identifies the number of dual-core processors in the system.  The print 
statement
has been fixed to print out the number of processors and the number of cores 
to
remove any guess work.

This patch fixes a customer request and an in-house observation during 
testing.
I have sent the patch to AMD and will be submitted to cpu-freq mailing list 
upstream.

Testing done on single processor quad core, dual processor dual cores 
systems some results are in the bugzilla.  Ask if you need more testing data.

Please ACK.




--- linux-2.6.18.x86_64/arch/i386/kernel/cpu/cpufreq/powernow-k8.c.orig	2007-03-15 05:53:12.000000000 -0400
+++ linux-2.6.18.x86_64/arch/i386/kernel/cpu/cpufreq/powernow-k8.c	2007-03-17 04:40:49.000000000 -0400
@@ -1425,8 +1425,8 @@ static int __cpuinit powernowk8_init(voi
 			}
 		}
 		printk(KERN_INFO PFX "Found %d %s "
-			"processors (" VERSION ")\n", supported_cpus,
-			boot_cpu_data.x86_model_id);
+			"processors (%d cpu cores) (" VERSION ")\n", supported_cpus/cpu_data[0].booted_cores,
+			boot_cpu_data.x86_model_id, supported_cpus);
 		return cpufreq_register_driver(&cpufreq_amd64_driver);
 	}