[Midnightbsd-cvs] src [6576] trunk/sys/x86/cpufreq/hwpstate.c: fix powerd on newer AMD CPUs such as the 8150.

[laffer1 at midnightbsd.org]

Revision: 6576
          http://svnweb.midnightbsd.org/src/?rev=6576
Author:   laffer1
Date:     2013-12-29 15:41:54 -0500 (Sun, 29 Dec 2013)
Log Message:
-----------
fix powerd on newer AMD CPUs such as the 8150.

Modified Paths:
--------------
    trunk/sys/x86/cpufreq/hwpstate.c

Modified: trunk/sys/x86/cpufreq/hwpstate.c
===================================================================
--- trunk/sys/x86/cpufreq/hwpstate.c	2013-12-29 20:31:14 UTC (rev 6575)
+++ trunk/sys/x86/cpufreq/hwpstate.c	2013-12-29 20:41:54 UTC (rev 6576)
@@ -184,8 +184,15 @@
 			id, PCPU_GET(cpuid));
 		/* Go To Px-state */
 		wrmsr(MSR_AMD_10H_11H_CONTROL, id);
+	}
+	CPU_FOREACH(i) {
+		/* Bind to each cpu. */
+		thread_lock(curthread);
+		sched_bind(curthread, i);
+		thread_unlock(curthread);
 		/* wait loop (100*100 usec is enough ?) */
 		for(j = 0; j < 100; j++){
+			/* get the result. not assure msr=id */
 			msr = rdmsr(MSR_AMD_10H_11H_STATUS);
 			if(msr == id){
 				break;
@@ -192,8 +199,6 @@
 			}
 			DELAY(100);
 		}
-		/* get the result. not assure msr=id */
-		msr = rdmsr(MSR_AMD_10H_11H_STATUS);
 		HWPSTATE_DEBUG(dev, "result  P%d-state on cpu%d\n",
 		    (int)msr, PCPU_GET(cpuid));
 		if (msr != id) {