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| author | sbruno <sbruno@FreeBSD.org> | 2013-12-05 17:57:51 +0000 |
|---|---|---|
| committer | sbruno <sbruno@FreeBSD.org> | 2013-12-05 17:57:51 +0000 |
| commit | 07f179266d161f0883f10fc89f19e9830e7f6ca3 (patch) | |
| tree | 17f978d40749d4753d4b78d2535c75f9979ba2cd /sys/x86 | |
| parent | d3ef2c77471b3537f24e68e982161b3d767da853 (diff) | |
| download | FreeBSD-src-07f179266d161f0883f10fc89f19e9830e7f6ca3.zip FreeBSD-src-07f179266d161f0883f10fc89f19e9830e7f6ca3.tar.gz | |
MFC r257769 to stable/10
Fix powerd/states on AMD cpus. Resolves issues with system reporting:
hwpstate0: set freq failed, err 6
Tested on FX-8150 and others.
PR: kern/167018
Submitted by: avg@
Approved by: re (gjb)
Diffstat (limited to 'sys/x86')
| -rw-r--r-- | sys/x86/cpufreq/hwpstate.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sys/x86/cpufreq/hwpstate.c b/sys/x86/cpufreq/hwpstate.c index 27279265..e86e31a 100644 --- a/sys/x86/cpufreq/hwpstate.c +++ b/sys/x86/cpufreq/hwpstate.c @@ -184,16 +184,21 @@ hwpstate_goto_pstate(device_t dev, int pstate) 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) { |
