Author: sbruno
Date: Wed Nov 6 23:29:25 2013
New Revision: 257769
URL: http://svnweb.freebsd.org/changeset/base/257769
Log:
Fix powerd/states on AMD cpus. Resolves issues with system reporting:
hwpstate0: set freq failed, err 6
Tested on FX-8150 and others.
PR: 167018
Submitted by: avg
MFC after: 2 weeks
Modified:
head/sys/x86/cpufreq/hwpstate.c
Modified: head/sys/x86/cpufreq/hwpstate.c
==============================================================================
--- head/sys/x86/cpufreq/hwpstate.c Wed Nov 6 22:36:36 2013
(r257768)
+++ head/sys/x86/cpufreq/hwpstate.c Wed Nov 6 23:29:25 2013
(r257769)
@@ -184,16 +184,21 @@ hwpstate_goto_pstate(device_t dev, int p
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;
}
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) {
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