On 02/22/2014 05:44 AM, Cody P Schafer wrote:
> /sys/devices/system/cpu/cpu*/smt-snooze-delay was converted into a NOP
> in commit 3fa8cad82b94d0bed002571bd246f2299ffc876b, and now does
> nothing. Add a pr_warn() to convince any users that they should stop
> using it.
>
> The commit message from t
wernv which was earlier
> taken care of by the arch specific idle routine.
>
> Signed-off-by: Preeti U Murthy
Reviewed-by: Deepthi Dharwar
> ---
> drivers/cpuidle/cpuidle-powernv.c |5 +
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/cpuidle/cpuidl
Hi Preeti,
Thanks for the patch.
On 02/07/2014 12:31 PM, Preeti U Murthy wrote:
> Hi Nicolas,
>
> Find below the patch that will need to be squashed with this one.
> This patch is based on the mainline.Adding Deepthi, the author of
> the patch which introduced the powernv cpuidle driver. Deepthi
CONFIG_POWERNV_IDLE.
This patch series applies on pseries cpuidle backend driver
fixes patchset posted earlier.
pseries/cpuidle: pseries cpuidle backend driver clean-ups.
Deepthi Dharwar (1):
powernv/cpuidle: Back-end cpuidle driver for powernv platform.
arch/powerpc/platforms/powernv
Following patch ports the cpuidle framework for powernv
platform and also implements a cpuidle back-end powernv
idle driver calling on to power7_nap and snooze idle states.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/powernv/setup.c | 13 ++
drivers/cpuidle/Kconfig.powerpc
,
this check is not required.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-pseries.c | 78 +
1 file changed, 11 insertions(+), 67 deletions(-)
diff --git a/drivers/cpuidle/cpuidle-pseries.c
b/drivers/cpuidle/cpuidle-pseries.c
index 2115478
Move the file from arch specific pseries/processor_idle.c
to drivers/cpuidle/cpuidle-pseries.c
Make the relevant Makefile and Kconfig changes.
Also, introduce Kconfig.powerpc in drivers/cpuidle
for all powerpc cpuidle drivers.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/include/asm
Currently cpuidle-pseries backend driver cannot be
built as a module due to dependencies wrt cpuidle framework.
This patch removes all the module related code in the driver.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-pseries.c | 15 +--
1 file changed, 1 insertion
_util, propose to clean
up the kernel code.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/include/asm/processor.h |7 ---
arch/powerpc/kernel/sysfs.c |2 --
drivers/cpuidle/cpuidle-pseries.c| 17 -
3 files changed, 26 deletions(-)
diff --git a/arch/po
This patch removes the usage of MAX_IDLE_STATE macro
and dead code around it. The number of states
are determined at run time based on the cpuidle
state table selected on a given platform
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-pseries.c | 28 ++--
1
lkml/2013/8/27/432
V7 -> https://lkml.org/lkml/2013/10/29/216
V8 -> https://lkml.org/lkml/2013/11/11/29
Deepthi Dharwar (5):
pseries/cpuidle: Move processor_idle.c to drivers/cpuidle.
pseries/cpuidle: Use cpuidle_register() for initialisation.
pseries/cpuidle: Make cpuidle-
misunderstanding that it is *necessary* to call ppc64_runlatch_off() multiple
times, when that is not the case. Hence this patch takes care of eliminating
this redundancy.
Signed-off-by: Preeti U Murthy
Reviewed-by: Srivatsa S. Bhat
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/pseries
On 01/14/2014 12:30 PM, Srivatsa S. Bhat wrote:
> On 01/14/2014 11:35 AM, Preeti U Murthy wrote:
>> On PowerPC, in a particular test scenario, all the cpu idle states were
>> disabled.
>> Inspite of this it was observed that the idle state count of the shallowest
>> idle state, snooze, was increas
reports back to arch so that it can take some
> default action.
>
> Signed-off-by: Preeti U Murthy
> ---
Acked-by: Deepthi Dharwar
>
> drivers/cpuidle/cpuidle.c|6 +-
> drivers/cpuidle/governors/menu.c |7 ---
> 2 files changed, 9 insertions(+), 4 delet
Acked-by: Deepthi Dharwar
> Cc: Deepthi Dharwar
> ---
> arch/powerpc/platforms/pseries/processor_idle.c | 57
> ++---
> 1 file changed, 3 insertions(+), 54 deletions(-)
>
> diff --git a/arch/powerpc/platforms/pseries/processor_idle.c
> b/arch/powerpc/
igned-off-by: Bartlomiej Zolnierkiewicz
> Signed-off-by: Kyungmin Park
> Acked-by: Daniel Lezcano
Acked-by: Deepthi Dharwar
> Cc: Deepthi Dharwar
> ---
> arch/powerpc/platforms/pseries/processor_idle.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/arch/powe
This patch replaces the cpuidle driver and devices initialisation
calls with a single generic cpuidle_register() call
and also includes minor refactoring of the code around it.
Signed-off-by: Deepthi Dharwar
Acked-by: Daniel Lezcano
---
drivers/cpuidle/cpuidle-powerpc-book3s.c | 80
driver posted out for powernv in V1 with
pSeries to create a single powerpc driver but this had compile
time flags.
Deepthi Dharwar (7):
pseries/cpuidle: Move processor_idle.c to drivers/cpuidle.
pseries/cpuidle: Use cpuidle_register() for initialisation.
pseries/cpuidle: Make
This patch enables idle cpu on the powernv platform to hook on to the cpuidle
framework, if available, else call on to default idle platform
code.
Signed-off-by: Deepthi Dharwar
Acked-by: Daniel Lezcano
---
arch/powerpc/platforms/powernv/setup.c | 13 -
1 file changed, 12
.
Signed-off-by: Deepthi Dharwar
Acked-by: Daniel Lezcano
---
drivers/cpuidle/cpuidle-powerpc-book3s.c | 15 +--
1 file changed, 1 insertion(+), 14 deletions(-)
diff --git a/drivers/cpuidle/cpuidle-powerpc-book3s.c
b/drivers/cpuidle/cpuidle-powerpc-book3s.c
index 51f6cda..82c9e15 100644
Move the file from arch specific pseries/processor_idle.c
to drivers/cpuidle/cpuidle-powerpc-book3s.c
Make the relevant Makefile and Kconfig changes.
This will enable having a common backend cpuidle driver
for POWERPC-BOOK3S platform going forward.
Signed-off-by: Deepthi Dharwar
Acked-by: Daniel
This patch includes cleanup and refactoring of the
existing code to make the driver POWERPC-BOOK3S generic.
* Re-naming the functions from pseries to generic powerpc-book3s.
* Re-naming the backend driver from pseries_idle to
powerpc_book3s_idle.
Signed-off-by: Deepthi Dharwar
Acked-by: Daniel
The following patch extends the current powerpc-book3s backend
idle driver to the powernv platform.
Signed-off-by: Deepthi Dharwar
Acked-by: Daniel Lezcano
---
drivers/cpuidle/cpuidle-powerpc-book3s.c | 39 --
1 file changed, 36 insertions(+), 3 deletions(-)
diff
This patch removes the usage of MAX_IDLE_STATE macro
and dead code around it. The number of states
are determined at run time based on the cpuidle
state table selected on a given platform
Signed-off-by: Deepthi Dharwar
Acked-by: Daniel Lezcano
---
drivers/cpuidle/cpuidle-powerpc-book3s.c
On 11/07/2013 10:31 AM, Benjamin Herrenschmidt wrote:
> On Thu, 2013-11-07 at 09:45 +0530, Deepthi Dharwar wrote:
>> 'powerpc' would be very generic arch and would comprise of all platforms
>> including embedded 32/64 bit to server 64 bit (similar to that of ARM).
>>
On 11/07/2013 02:35 AM, Daniel Lezcano wrote:
> On 10/29/2013 12:01 PM, Deepthi Dharwar wrote:
>> This patch includes cleanup and refactoring of the
>> existing code to make the driver POWER generic.
>> * Re-naming the functions from pseries to generic power.
>> * Re-nam
This patch replaces the cpuidle driver and devices initialisation
calls with a single generic cpuidle_register() call
and also includes minor refactoring of the code around it.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm-power.c | 80 +--
1
The following patch extends the current power backend
idle driver to the powernv platform.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm-power.c | 39 ---
1 file changed, 36 insertions(+), 3 deletions(-)
diff --git a/drivers/cpuidle/cpuidle
This patch includes cleanup and refactoring of the
existing code to make the driver POWER generic.
* Re-naming the functions from pseries to generic power.
* Re-naming the backend driver from pseries_idle to
ibm-power-idle.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm
Move the file from arch specific pseries/processor_idle.c
to drivers/cpuidle/cpuidle-ibm-power.c
Make the relevant Makefile and Kconfig changes.
This will enable having a common backend cpuidle driver
for POWER platform going forward.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/include/asm
This patch enables idle cpu on the powernv platform to hook on to the cpuidle
framework, if available, else call on to default idle platform
code.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/powernv/setup.c | 13 -
1 file changed, 12 insertions(+), 1 deletion
.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm-power.c | 15 +--
1 file changed, 1 insertion(+), 14 deletions(-)
diff --git a/drivers/cpuidle/cpuidle-ibm-power.c
b/drivers/cpuidle/cpuidle-ibm-power.c
index faf8cc1..8c9e42c 100644
--- a/drivers/cpuidle/cpuidle-ibm-power.c
This patch removes the usage of MAX_IDLE_STATE macro
and dead code around it. The number of states
are determined at run time based on the cpuidle
state table selected on a given platform
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm-power.c | 26 +-
1
PPC64.
Changes in V2:
=
* Merged the backend driver posted out for powernv in V1 with
pSeries to create a single powerpc driver but this had compile
time flags.
Deepthi Dharwar (7):
pseries/cpuidle: Move processor_idle.c to drivers/cpuidle.
pseries/cpuidle: Use cpui
.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm-power.c | 15 +--
1 file changed, 1 insertion(+), 14 deletions(-)
diff --git a/drivers/cpuidle/cpuidle-ibm-power.c
b/drivers/cpuidle/cpuidle-ibm-power.c
index b42b948..262db3c 100644
--- a/drivers/cpuidle/cpuidle-ibm-power.c
This patch enables idle cpu on the powernv platform to hook on to the cpuidle
framework, if available, else call on to default idle platform
code.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/powernv/setup.c | 14 +-
1 file changed, 13 insertions(+), 1 deletion
The following patch extends the current power backend
idle driver to the powernv platform.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm-power.c | 39 ---
1 file changed, 36 insertions(+), 3 deletions(-)
diff --git a/drivers/cpuidle/cpuidle
This patch removes the usage of MAX_IDLE_STATE macro
and dead code around it. The number of states
are determined at run time based on the cpuidle
state table selected on a given platform
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm-power.c | 26 +-
1
This patch includes cleanup and refactoring of the
existing code to make the driver POWER generic.
* Re-naming the functions from pseries to generic power.
* Re-naming the backend driver from pseries_idle to
ibm-power-idle.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm
This patch replaces the cpuidle driver and devices initialisation
calls with a single generic cpuidle_register() call
and also includes minor refactoring of the code around it.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm-power.c | 80 +--
1
Move the file from arch specific pseries/processor_idle.c
to drivers/cpuidle/cpuidle-ibm-power.c
Make the relevant Makefile and Kconfig changes.
This will enable having a common backend cpuidle driver
for POWER platform going forward.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/include/asm
th
pSeries to create a single powerpc driver but this had compile
time flags.
Deepthi Dharwar (7):
pseries/cpuidle: Move processor_idle.c to drivers/cpuidle.
pseries/cpuidle: Use cpuidle_register() for initialisation.
pseries/cpuidle: Make pseries_idle backend drive
mp;dedicated_cede_loop },
>> +};
>> +
>> +/*
>> + * States for shared partition case.
>> + */
>> +static struct cpuidle_state shared_states[MAX_IDLE_STATE_COUNT] = {
>> +{ /* Shared Cede */
>> + .name = "Shared Cede",
>> +
.flags = CPUIDLE_FLAG_TIME_VALID,
>> + .exit_latency = 0,
>> +.target_residency = 0,
>> +.enter = &shared_cede_loop },
>> +};
>> +
>> +static void __exit power_processor_idle_exit(void)
>> +{
>>
Hi Bartlomiej,
Thanks for the review.
On 08/22/2013 04:26 PM, Bartlomiej Zolnierkiewicz wrote:
>
> Hi,
>
> On Thursday, August 22, 2013 11:00:29 AM Deepthi Dharwar wrote:
>> This patch involves moving the current pseries_idle backend driver code
>> from pseries/pro
This patch enables idle cpu on the powernv platform to hook on to the cpuidle
framework, if available, else call on to default idle platform
code.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/powernv/setup.c | 14 +-
1 file changed, 13 insertions(+), 1 deletion
removes a lot of code duplicacy, thus making the code elegant.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/include/asm/processor.h|2
arch/powerpc/platforms/pseries/Kconfig |9 -
arch/powerpc/platforms/pseries/Makefile |1
arch/powerpc/platforms
As a part of pseries_idle backend driver cleanup to make
the code common to both pseries and powernv platforms, it
is necessary to move the backend-driver code to drivers/cpuidle.
As a pre-requisite for that, it is essential to move plpar_wrapper.h
to include/asm.
Signed-off-by: Deepthi Dharwar
The following patch extends the current power backend
idle driver to the powernv platform.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-ibm-power.c | 37 ---
1 file changed, 34 insertions(+), 3 deletions(-)
diff --git a/drivers/cpuidle/cpuidle
As a part of pseries_idle cleanup to make the backend driver
code common to both pseries and powernv.
Remove non-essential smt_snooze_delay declaration in pseries.h
header file and pseries.h file inclusion in
pseries/processor_idle.c
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms
th
pSeries to create a single powerpc driver but this had compile
time flags.
Deepthi Dharwar (5):
pseries/cpuidle: Remove dependency of pseries.h file
pseries: Move plpar_wrapper.h to powerpc common include/asm location.
POWER/cpuidle: Generic IBM-POWER backend cpuidle driver.
: Deepthi Dharwar
---
arch/powerpc/include/asm/paca.h | 23 +
arch/powerpc/include/asm/processor.h|2
arch/powerpc/platforms/pseries/Kconfig |9 -
arch/powerpc/platforms/pseries/Makefile |1
arch/powerpc/platforms/pseries/processor_idle.c
ime flags.
Deepthi Dharwar (5):
pseries/cpuidle: Remove dependency of pseries.h file
pseries: Move plpar_wrapper.h to powerpc common include/asm location.
powerpc/cpuidle: Generic powerpc backend cpuidle driver.
powerpc/cpuidle: Enable powernv cpuidle support.
powern
This patch enables idle cpu on the powernv platform to hook on to the cpuidle
framework, if available, else call on to default idle platform
code.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/powernv/setup.c | 14 +-
1 file changed, 13 insertions(+), 1 deletion
As a part of pseries_idle backend driver cleanup to make
the code common to both pseries and powernv platforms, it
is necessary to move the backend-driver code to drivers/cpuidle.
As a pre-requisite for that, it is essential to move plpar_wrapper.h
to include/asm.
Signed-off-by: Deepthi Dharwar
The following patch extends the current powerpc backend
idle driver to the powernv platform.
Signed-off-by: Deepthi Dharwar
---
drivers/cpuidle/cpuidle-powerpc.c | 35 +--
1 file changed, 33 insertions(+), 2 deletions(-)
diff --git a/drivers/cpuidle/cpuidle
As a part of pseries_idle cleanup to make the backend driver
code common to both pseries and powernv.
Remove non-essential smt_snooze_delay declaration in pseries.h
header file and pseries.h file inclusion in
pseries/processor_idle.c
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms
On 08/07/2013 05:11 AM, Scott Wood wrote:
> On Wed, 2013-08-07 at 09:30 +1000, Benjamin Herrenschmidt wrote:
>> On Tue, 2013-08-06 at 18:08 -0500, Scott Wood wrote:
>>> Here's another example. get_lppaca() will only build on book3s -- and
>>> yet we get requests for e500 code to use this file.
>>
As a part of pseries_idle backend driver cleanup to make
the code common to both pseries and powernv archs, it
is necessary to move the backend-driver code to powerpc/sysdev.
As a pre-requisite to that, it is essential to move plpar_wrapper.h
to include/asm.
Signed-off-by: Deepthi Dharwar
Move pseries_idle backend driver code to arch/powerpc/sysdev
so that the code can be used for a common driver for powernv
and pseries. This removes a lot of code duplicacy.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/pseries/Kconfig |9 -
arch/powerpc/platforms
The following patch extends the current pseries backend
idle driver to powernv platform.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/include/asm/processor.h |2 -
arch/powerpc/sysdev/Kconfig |8 +-
arch/powerpc/sysdev/Makefile |2 -
arch/powerpc/sysdev
both pseries and powernv.
/* Snooze Delay, pseries_idle */
DECLARE_PER_CPU(long, smt_snooze_delay);
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/pseries/processor_idle.c |4 +++-
arch/powerpc/platforms/pseries/pseries.h|3 ---
2 files changed, 3 insertions(+), 4
This patch enables idle powernv cpu to hook on to the cpuidle
framework, if available, else call on to default idle platform
code.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/powernv/setup.c | 12 +++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch
per-cpu variable.
This can be used to enable/disable NAP on per-cpu
basis using sysfs but when this variable is passed
via kernel command line or using the smt-snooze-delay
it applies to all the cpus. Per-cpu tuning can
only be done via sysfs.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc
framework.
This patch mainly focus on an integrated CPUIDLE backend
driver for POWERPC. Minor cpuidle clean-ups will be
taken up going further.
One need to enable POWERPC_IDLE config option to exploit these
backend drivers.
V1 -> http://lkml.org/lkml/2013/7/23/143
Deepthi Dharwar (6):
cpui
On 07/29/2013 08:23 PM, Daniel Lezcano wrote:
> On 07/29/2013 04:39 PM, Deepthi Dharwar wrote:
>> Hi Daniel,
>>
>> On 07/27/2013 10:57 AM, Daniel Lezcano wrote:
>>> On 07/23/2013 11:01 AM, Deepthi Dharwar wrote:
>>>> This patch implements a back-e
On 07/29/2013 08:14 PM, Daniel Lezcano wrote:
> On 07/29/2013 04:27 PM, Deepthi Dharwar wrote:
>> On 07/27/2013 10:59 AM, Daniel Lezcano wrote:
>>> On 07/23/2013 11:01 AM, Deepthi Dharwar wrote:
>>>> This patch enables idle powernv cpu to hook on to the cpuidle
>
Hi Daniel,
On 07/27/2013 10:57 AM, Daniel Lezcano wrote:
> On 07/23/2013 11:01 AM, Deepthi Dharwar wrote:
>> This patch implements a back-end cpuidle driver for
>> powernv calling power7_nap and snooze idle states.
>> This can be extended by adding more idle states
&g
On 07/27/2013 10:59 AM, Daniel Lezcano wrote:
> On 07/23/2013 11:01 AM, Deepthi Dharwar wrote:
>> This patch enables idle powernv cpu to hook on to the cpuidle
>> framework, if available, else call on to default idle platform
>> code.
>
> Why do you need to do that ?
&g
On 07/23/2013 07:36 PM, Michael Ellerman wrote:
> On Tue, Jul 23, 2013 at 02:31:41PM +0530, Deepthi Dharwar wrote:
>> This patch implements a back-end cpuidle driver for
>> powernv calling power7_nap and snooze idle states.
>> This can be extended by adding more idle states
&g
On 07/23/2013 07:32 PM, Michael Ellerman wrote:
> On Tue, Jul 23, 2013 at 10:23:57AM +0530, Deepthi Dharwar wrote:
>> smt-snooze-delay is a tun-able provided currently on powerpc to delay the
>> entry of an idle cpu to NAP state. By default, the value is 100us,
>> which is e
smt-snooze-delay is a tunable that is supported on
powerpc platform to delay the entry to nap state.
This can be set either via sysfs, kernel commandline
or pp64_cpu util.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/include/asm/processor.h|2 +
arch/powerpc/platforms/powernv
This patch enables idle powernv cpu to hook on to the cpuidle
framework, if available, else call on to default idle platform
code.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/powernv/setup.c | 12 +++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch
with pSeries idle management.
For POWERNV platform to hook into CPUIDLE framework, one
needs to enable CONFIG_POWERNV_IDLE and disable
CONFIG_PSERIES_IDLE
Deepthi Dharwar (3):
cpuidle/powernv: cpuidle backend driver for powernv
cpuidle/powernv: Enable idle powernv cpu to call into
This patch implements a back-end cpuidle driver for
powernv calling power7_nap and snooze idle states.
This can be extended by adding more idle states
in the future to the existing framework.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/powernv/Kconfig |9 +
arch
: Deepthi Dharwar
---
arch/powerpc/platforms/pseries/processor_idle.c | 34 ++-
1 file changed, 27 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/processor_idle.c
b/arch/powerpc/platforms/pseries/processor_idle.c
index 4644efa0..8133f50 100644
--- a
t; +
>> +if (ppc_md.power_save) {
>> +ppc_md.power_save();
>> +/*
>> + * Some power_save functions return with
>> + * interrupts enabled, some don't.
>> + */
>> + if (irqs_disab
; cast, making sure that negative residency values are applied correctly
> even though they should not appear anymore.
Currently tegra/cpuidle uses ktime_get(). Good to have it for all
the other arch idle residency time logging too.
Tested patch on pseries.
Reviewed-by: Deepthi Dharwar
l.
This patch aims to fix this, by disabling nap state when smt_snooze_delay
variable is set to -ve value.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/include/asm/processor.h|4 ++--
arch/powerpc/kernel/sysfs.c |2 +-
arch/powerpc/platforms
o 0
nap to smt_snooze_delay
if the predicted idle time is less
than smt_snooze_delay (target_residency of nap)
value governor would pick snooze state, else nap. This adhers to the
previous native idle design.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/pser
governor
making
wrong state decisions.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/pseries/processor_idle.c |4
1 file changed, 4 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/processor_idle.c
b/arch/powerpc/platforms/pseries/processor_idle.c
index 455760b
increased from 96 to 99.4 percent and idle residency for snooze for
the same decreased from 4 to 0.6 percent, determined running spec power
benchmark runs.
Deepthi Dharwar (3):
cpuidle: (POWER) Fix snooze state problem persistant in the current
cpuidle design on pseries.
cpuidle: (POWER) Fix
governor
making
wrong state decisions.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/pseries/processor_idle.c |4
1 file changed, 4 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/processor_idle.c
b/arch/powerpc/platforms/pseries/processor_idle.c
index 455760b
o 0
nap to smt_snooze_delay
if the predicted idle time is less
than smt_snooze_delay (target_residency of nap)
value governor would pick snooze state, else nap. This adhers to the
previous native idle design.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/platforms/pser
l.
This patch aims to fix this, by disabling nap state when smt_snooze_delay
variable is set to -ve value.
Signed-off-by: Deepthi Dharwar
---
arch/powerpc/include/asm/processor.h|4 ++--
arch/powerpc/kernel/sysfs.c |2 +-
arch/powerpc/platforms
increased from 96 to 99.4 percent and idle residency for snooze for
the same decreased from 4 to 0.6 percent, determined running spec power
benchmark runs.
Deepthi Dharwar (3):
cpuidle: (POWER) Fix snooze state problem persistant in the current
cpuidle design on pseries.
cpuidle: (POWER) Fix
patch will restore it back, which also fixes a tick_broadcast_mask regression:
> https://lkml.org/lkml/2012/7/30/169
Reviewed-by: Deepthi Dharwar
> [Resend to ACPI mail list and Cc stable kernel]
>
> Signed-off-by: Feng Tang
> Cc: Thomas Renninger
> Cc: Deepthi Dhar
On 07/18/2012 08:08 PM, Carsten Emde wrote:
> On 07/18/2012 01:48 PM, Deepthi Dharwar wrote:
>> On 07/18/2012 04:32 PM, Carsten Emde wrote:
>>> On 07/18/2012 08:36 AM, Deepthi Dharwar wrote:
>>>> On 07/18/2012 12:29 AM, Carsten Emde wrote:
>>>>> Th
On 07/18/2012 04:32 PM, Carsten Emde wrote:
> On 07/18/2012 08:36 AM, Deepthi Dharwar wrote:
>> On 07/18/2012 12:29 AM, Carsten Emde wrote:
>>
>>> There are two cpuidle governors ladder and menu. While the ladder
>>> governor is always available, if CONFIG_C
On 07/18/2012 12:29 AM, Carsten Emde wrote:
> There are two cpuidle governors ladder and menu. While the ladder
> governor is always available, if CONFIG_CPU_IDLE is selected, the
> menu governor additionally requires CONFIG_NO_HZ.
>
> A particular C state can be disabled by writing to the sysfs
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