On Wed, Apr 23, 2014 at 5:09 PM, Peter Zijlstra <pet...@infradead.org> wrote: > On Wed, Apr 23, 2014 at 04:49:55PM +0200, Stephane Eranian wrote: >> On your machine, booted with 3.15-rc2, do you have /sys/devices/power? >> If not, and you have at least an SNB, you should have RAPL and that >> RAPL_UNIT MSR. >> >> Proof is that if you read that MSR using /dev/cpu/msr it works just fine: >> # modprobe msr >> # rdmsr 0x606 >> a1003 >> >> So something is broken somewhere. > > I've not got SNB+ class hardware (for testing). But I believe you that > there's something funny, I just do not understanding how *msr_safe() > could cause this.
Or the logic of the test in rapl_cpu_prepare() is wrong, maybe? Wouldn't rdmsrl_safe() return 0 on success? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
