From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: "Li, Aubrey" <aubrey.li@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>,
Kumar P Mahesh <mahesh.kumar.p@intel.com>,
Alan Cox <alan@linux.intel.com>,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] intel_idle: add idle values for Cherrytrail/Braswell
Date: Mon, 25 Aug 2014 13:12:00 +0300 [thread overview]
Message-ID: <20140825101200.GH1660@lahna.fi.intel.com> (raw)
In-Reply-To: <53F74E5D.2040108@linux.intel.com>
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.kumar.p@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.kumar.p@intel.com>
> > Signed-off-by: Alan Cox <alan@linux.intel.com>
> > Signed-off-by: Mika Westerberg <mika.westerberg@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
next prev parent reply other threads:[~2014-08-25 10:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-22 9:58 [PATCH] intel_idle: add idle values for Cherrytrail/Braswell Mika Westerberg
2014-08-22 11:39 ` [PATCH v2] " Mika Westerberg
2014-08-22 14:06 ` Li, Aubrey
2014-08-25 10:12 ` Mika Westerberg [this message]
2014-08-26 2:38 ` Li, Aubrey
2014-08-26 9:00 ` Mika Westerberg
2014-08-27 0:03 ` Li, Aubrey
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