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: > dmesg | grep idle [ 0.523624] cpuidle: using governor ladder [ 0.528215] cpuidle: using governor menu [ 16.649461] intel_idle: disabled [ 16.736481] ACPI: acpi_idle registered with cpuidle > grep . /sys/devices/system/cpu/cpu0/cpuidle/*/* /sys/devices/system/cpu/cpu0/cpuidle/state0/desc:CPUIDLE CORE POLL IDLE /sys/devices/system/cpu/cpu0/cpuidle/state0/disable:0 /sys/devices/system/cpu/cpu0/cpuidle/state0/latency:0 /sys/devices/system/cpu/cpu0/cpuidle/state0/name:POLL /sys/devices/system/cpu/cpu0/cpuidle/state0/power:4294967295 /sys/devices/system/cpu/cpu0/cpuidle/state0/residency:0 /sys/devices/system/cpu/cpu0/cpuidle/state0/time:0 /sys/devices/system/cpu/cpu0/cpuidle/state0/usage:0 /sys/devices/system/cpu/cpu0/cpuidle/state1/desc:ACPI FFH INTEL MWAIT 0x0 /sys/devices/system/cpu/cpu0/cpuidle/state1/disable:0 /sys/devices/system/cpu/cpu0/cpuidle/state1/latency:1 /sys/devices/system/cpu/cpu0/cpuidle/state1/name:C1 /sys/devices/system/cpu/cpu0/cpuidle/state1/power:0 /sys/devices/system/cpu/cpu0/cpuidle/state1/residency:2 /sys/devices/system/cpu/cpu0/cpuidle/state1/time:1255076 /sys/devices/system/cpu/cpu0/cpuidle/state1/usage:763 /sys/devices/system/cpu/cpu0/cpuidle/state2/desc:ACPI FFH INTEL MWAIT 0x58 /sys/devices/system/cpu/cpu0/cpuidle/state2/disable:0 /sys/devices/system/cpu/cpu0/cpuidle/state2/latency:500 /sys/devices/system/cpu/cpu0/cpuidle/state2/name:C2 /sys/devices/system/cpu/cpu0/cpuidle/state2/power:0 /sys/devices/system/cpu/cpu0/cpuidle/state2/residency:1000 /sys/devices/system/cpu/cpu0/cpuidle/state2/time:1694866 /sys/devices/system/cpu/cpu0/cpuidle/state2/usage:639 /sys/devices/system/cpu/cpu0/cpuidle/state3/desc:ACPI FFH INTEL MWAIT 0x64 /sys/devices/system/cpu/cpu0/cpuidle/state3/disable:0 /sys/devices/system/cpu/cpu0/cpuidle/state3/latency:5000 /sys/devices/system/cpu/cpu0/cpuidle/state3/name:C3 /sys/devices/system/cpu/cpu0/cpuidle/state3/power:0 /sys/devices/system/cpu/cpu0/cpuidle/state3/residency:10000 /sys/devices/system/cpu/cpu0/cpuidle/state3/time:380547473 /sys/devices/system/cpu/cpu0/cpuidle/state3/usage:744 -- 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/
