On 2014/8/26 17:00, Mika Westerberg wrote: > On Tue, Aug 26, 2014 at 10:38:32AM +0800, Li, Aubrey wrote: >> On 2014/8/25 18:12, Mika Westerberg wrote: >>> On Fri, Aug 22, 2014 at 10:06:21PM +0800, Li, Aubrey wrote: >>>> On 2014/8/22 19:39, Mika Westerberg wrote: >>>>> From: Mahesh Kumar P <mahesh.kuma...@intel.com> >>>>> >>>>> Cherrytrail/Braswell is a successor of Intel Baytrail but has slighly >>>>> different CPU idle values and latencies. >>>>> >>>>> Signed-off-by: Kumar P Mahesh <mahesh.kuma...@intel.com> >>>>> Signed-off-by: Alan Cox <a...@linux.intel.com> >>>>> Signed-off-by: Mika Westerberg <mika.westerb...@linux.intel.com> >>>>> --- >>>>> I learned from Mahesh that C1e, C4 and S0i2 states are deprecated so those >>>>> are now removed. >>>> >>>> If the platform has ACPI supported, I believe Len wants to see what >>>> C-states number exported by ACPI. >>>> >>>> Please boot the machine with "intel_idle.max_cstate=0" to disable >>>> intel_idle, then post the output of the following commands >>> >>> OK, here goes: >> >> ACPI exposes 0x58 as C6 mwait hint while the patch proposes 0x52 for C6. >> Can you please remove "intel_idle.max_cstate=0" and run "dmesg | grep >> idle" again to see how many C6 supports in CPUID enumeration? > > [ 16.685769] intel_idle: MWAIT substates: 0x33000020 > [ 16.691236] intel_idle: v0.4 model 0x4C > [ 16.695539] intel_idle: lapic_timer_reliable_states 0xffffffff >
enough to turn over to Len to finalize, thanks Mika. -Aubrey -- 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/
