Commit-ID: 5d1638acb9f62fa7eb0c07cb85318bbe1f13b227
Gitweb: http://git.kernel.org/tip/5d1638acb9f62fa7eb0c07cb85318bbe1f13b227
Author: Preeti U Murthy pre...@linux.vnet.ibm.com
AuthorDate: Fri, 7 Feb 2014 13:36:32 +0530
Committer: Thomas Gleixner t...@linutronix.de
CommitDate: Fri, 7 Feb
The broadcast timer registration has to be done only when
GENERIC_CLOCKEVENTS_BROADCAST and TICK_ONESHOT config options are enabled.
Also fix max_delta_ticks value for the pseudo clock device.
Reported-by: Fengguang Wu fengguang...@intel.com
Signed-off-by: Preeti U Murthy pre
local_irq_enable() since we are in the call path of
cpuidle driver and that explicitly enables irqs on exit from
idle states.
On 02/07/2014 06:47 AM, Nicolas Pitre wrote:
> On Thu, 6 Feb 2014, Preeti U Murthy wrote:
>
>> Hi Daniel,
>>
>> On 02/06/2014 09:55 PM, Daniel Le
Hi Nicolas,
On 02/07/2014 06:47 AM, Nicolas Pitre wrote:
> On Thu, 6 Feb 2014, Preeti U Murthy wrote:
>
>> Hi Daniel,
>>
>> On 02/06/2014 09:55 PM, Daniel Lezcano wrote:
>>> Hi Nico,
>>>
>>>
>>> On 6 February 2014 14:16, Nico
Hi Thomas,
On 02/06/2014 09:33 PM, Thomas Gleixner wrote:
> On Thu, 6 Feb 2014, Preeti U Murthy wrote:
>
> Compiler warnings are not so important, right?
>
> kernel/time/tick-broadcast.c: In function ‘tick_broadcast_oneshot_control’:
> kernel/time/tick-broadcast.c:700:3
oes that ontop of this.
There have been cpuidle driver cleanups for powernv and pseries in this
merge window. While no change would be required in the pseries cpuidle
driver as a result of Nicolas's cleanup, we would need to add the
ppc64_runlatch_on and off functions before and after the entry into th
Hi Nicolas,
powernv in the subject of the patch?
Regards
Preeti U Murthy
On 02/06/2014 07:46 PM, Nicolas Pitre wrote:
> The core idle loop now takes care of it.
>
> Signed-off-by: Nicolas Pitre
> ---
> arch/arm64/kernel/process.c | 7 ++-
> 1 file changed, 2 insertio
gt; .show_cpuinfo = pnv_show_cpuinfo,
> .progress = pnv_progress,
> .machine_shutdown = pnv_shutdown,
> - .power_save = powernv_idle,
> + .power_save = power7_idle,
> .calibrate_decr = generic_calibrat
-by: Preeti U Murthy pre...@linux.vnet.ibm.com
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Hi Nicolas,
powernv in the subject of the patch?
Regards
Preeti U Murthy
On 02/06/2014 07:46 PM, Nicolas Pitre wrote:
The core idle loop now takes care of it.
Signed-off-by: Nicolas Pitre n...@linaro.org
---
arch/arm64/kernel/process.c | 7 ++-
1 file changed, 2 insertions(+), 5
as a result of Nicolas's cleanup, we would need to add the
ppc64_runlatch_on and off functions before and after the entry into the
powernv idle states.
Thanks
Regards
Preeti U Murthy
-- Daniel
-}
-
define_machine(powernv) {
.name = PowerNV,
.probe
Hi Thomas,
On 02/06/2014 09:33 PM, Thomas Gleixner wrote:
On Thu, 6 Feb 2014, Preeti U Murthy wrote:
Compiler warnings are not so important, right?
kernel/time/tick-broadcast.c: In function ‘tick_broadcast_oneshot_control’:
kernel/time/tick-broadcast.c:700:3: warning: ‘return
Hi Nicolas,
On 02/07/2014 06:47 AM, Nicolas Pitre wrote:
On Thu, 6 Feb 2014, Preeti U Murthy wrote:
Hi Daniel,
On 02/06/2014 09:55 PM, Daniel Lezcano wrote:
Hi Nico,
On 6 February 2014 14:16, Nicolas Pitre nicolas.pi...@linaro.org wrote:
The core idle loop now takes care
local_irq_enable() since we are in the call path of
cpuidle driver and that explicitly enables irqs on exit from
idle states.
On 02/07/2014 06:47 AM, Nicolas Pitre wrote:
On Thu, 6 Feb 2014, Preeti U Murthy wrote:
Hi Daniel,
On 02/06/2014 09:55 PM, Daniel Lezcano wrote:
Hi Nico,
On 6 February 2014 14
as well by moving the hrtimer on to the CPU handling the
CPU_DEAD
notification.
Signed-off-by: Preeti U Murthy
[Added Changelog and code to handle reprogramming of hrtimer]
---
include/linux/clockchips.h |9 +++
kernel/time/Makefile |2 -
kernel/time/tick
we are in no further position to take a decision on an alternative
idle state to enter into.
Signed-off-by: Preeti U Murthy
---
drivers/cpuidle/cpuidle.c | 38 +++---
1 file changed, 23 insertions(+), 15 deletions(-)
diff --git a/drivers/cpuidle/cpuidle.c b
comments and code around programming of the broadcast hrtimer.
---
Preeti U Murthy (2):
time: Change the return type of clockevents_notify() to integer
time/cpuidle:Handle failed call to BROADCAST_ENTER on archs with
CPUIDLE_FLAG_TIMER_STOP set
Thomas Gleixner (1):
tick/cpuidle
. For such
a CPU, the BROADCAST_ENTER notification has to fail indicating that its clock
device cannot be shutdown. To make way for this support, change the return
type of tick_broadcast_oneshot_control() and hence clockevents_notify() to
indicate such scenarios.
Signed-off-by: Preeti U Murthy
. For such
a CPU, the BROADCAST_ENTER notification has to fail indicating that its clock
device cannot be shutdown. To make way for this support, change the return
type of tick_broadcast_oneshot_control() and hence clockevents_notify() to
indicate such scenarios.
Signed-off-by: Preeti U Murthy pre
comments and code around programming of the broadcast hrtimer.
---
Preeti U Murthy (2):
time: Change the return type of clockevents_notify() to integer
time/cpuidle:Handle failed call to BROADCAST_ENTER on archs with
CPUIDLE_FLAG_TIMER_STOP set
Thomas Gleixner (1):
tick/cpuidle
of
the stand by CPU as well by moving the hrtimer on to the CPU handling the
CPU_DEAD
notification.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
[Added Changelog and code to handle reprogramming of hrtimer]
---
include/linux/clockchips.h |9 +++
kernel/time/Makefile
we are in no further position to take a decision on an alternative
idle state to enter into.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
drivers/cpuidle/cpuidle.c | 38 +++---
1 file changed, 23 insertions(+), 15 deletions(-)
diff --git
Hi Arjan,
On 02/04/2014 08:22 PM, Arjan van de Ven wrote:
> On 2/4/2014 12:35 AM, Preeti U Murthy wrote:
>> The cpuidle governors today are not handling scenarios where no idle
>> state
>> can be chosen. Such scenarios coud arise if the user has disabled all the
>
R_RESTART;
>
> We probably want to check whether the timer needs to be restarted at
> all.
>
> if (ce_broadcast_timer.next_event.tv64 == KTIME_MAX)
> return HRTIMER_NORESTART;
>
> return HRTIMER_RESTART;
True this additional check would be
On 02/04/2014 03:31 PM, Thomas Gleixner wrote:
> On Fri, 24 Jan 2014, Preeti U Murthy wrote:
>> -extern void tick_broadcast_oneshot_control(unsigned long reason);
>> +extern int tick_broadcast_oneshot_control(unsigned long reason);
>
>> -static inline void tick_broadcast_
there is no point correcting the prediction either.
Signed-off-by: Preeti U Murthy
Changes from V1:https://lkml.org/lkml/2014/1/14/26
1. Change the return code to success from -EINVAL due to the reason mentioned
in the changelog.
2. Add logic that the patch is addressing in the ladder governor as well
there is no point correcting the prediction either.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
Changes from V1:https://lkml.org/lkml/2014/1/14/26
1. Change the return code to success from -EINVAL due to the reason mentioned
in the changelog.
2. Add logic that the patch is addressing
On 02/04/2014 03:31 PM, Thomas Gleixner wrote:
On Fri, 24 Jan 2014, Preeti U Murthy wrote:
-extern void tick_broadcast_oneshot_control(unsigned long reason);
+extern int tick_broadcast_oneshot_control(unsigned long reason);
-static inline void tick_broadcast_oneshot_control(unsigned long
out the next version with the above corrections
including the patch added to this thread where we handle archs setting
the CPUIDLE_FLAG_TIMER_STOP flag?
Hmm?
Thanks,
tglx
Thanks
Regards
Preeti U Murthy
___
Linuxppc-dev mailing list
Hi Arjan,
On 02/04/2014 08:22 PM, Arjan van de Ven wrote:
On 2/4/2014 12:35 AM, Preeti U Murthy wrote:
The cpuidle governors today are not handling scenarios where no idle
state
can be chosen. Such scenarios coud arise if the user has disabled all the
idle states at runtime or the latency
On PowerPC, the SCHED_MC option can never be set. Its not even optional.
On x86, it is on by default and on arm looks like its off by default.
Thanks,
Regards
Preeti U Murthy
>
>>
>>>
>>>
>>> On 3 February 2014 17:17, Alex Shi wrote:
>>>> I just ru
not even optional.
On x86, it is on by default and on arm looks like its off by default.
Thanks,
Regards
Preeti U Murthy
On 3 February 2014 17:17, Alex Shi alex@linaro.org wrote:
I just run the 3.14-rc1 kernel on panda board. The only domain for it is
'CPU' domain, but this domain
r target residency.. The same holds for exit_latency.
>
> I am not sure to get the point. Actually, this loop should be just
> optimized to backward search the idle state like cpuidle_play_dead does
>
> There is also a patch proposed by Alex Shi about this loop.
>
> [RFC PATCH
t; But just a thought on if there is scope to improve this part of the
>> cpufreq code.
>> What do you all think?
>
> I fear I don't know the problem well enough to display any serious advice.
> It depends what kind of measurement is needed. For example, isn't there some
of different loads and power statistics
taken
in interesting path such as the tick or sched switches. Aren't there some
read-only metrics
that could be interesting?
Thanks
Regards
Preeti U Murthy
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the body
are copying the exit_latency and target_residency
numbers of the idle state entered, into the rq as soon as the idle state
for the CPU is chosen, as per the discussion on this thread, then I
guess the ordering of the idle states in the cpuidle state table does
not matter.
Thanks
Regards
Preeti U Murthy
;
> Alternatively, can we enforce sanity on the cpuidle infrastructure to
> make the index naturally ordered? If not, please explain why :-)
The commit id 71abbbf856a0e70 says that there are SOCs which could have
their target_residency and exit_latency values change at runtime. This
comm
their target_residency and exit_latency values change at runtime. This
commit thus removed the ordering of the idle states according to their
target_residency/exit_latency. Adding Len and Arjan to the CC.
Thanks
Regards
Preeti U Murthy
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broadcast framework to handle wakeup of CPUs from
deep idle states on such implementations is currently under discussion.
https://lkml.org/lkml/2014/1/15/86
https://lkml.org/lkml/2014/1/24/28
Either way this patchset is essential to enable handling the tick broadcast
IPIs.
---
Preeti U Murthy (1
From: Preeti U Murthy
Split timer_interrupt(), which is the local timer interrupt handler on ppc
into routines called during regular interrupt handling and __timer_interrupt(),
which takes care of running local timers and collecting time related stats.
This will enable callers interested only
slots are available).
So, implement the functionality of PPC_MSG_CALL_FUNC_SINGLE using
PPC_MSG_CALL_FUNC itself and release its IPI message slot, so that it can be
used for something else in the future, if desired.
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Preeti U. Murthy
Acked-by: Geoff
[Functions renamed to tick_broadcast* and Changelog modified by
Preeti U. Murthy]
Signed-off-by: Preeti U. Murthy
Acked-by: Geoff Levand [For the PS3 part]
---
arch/powerpc/include/asm/smp.h |2 +-
arch/powerpc/include/asm/time.h |1 +
arch/powerpc/kernel/smp.c
...@linux.vnet.ibm.com
Signed-off-by: Preeti U. Murthy pre...@linux.vnet.ibm.com
Acked-by: Geoff Levand ge...@infradead.org [For the PS3 part]
---
arch/powerpc/include/asm/smp.h |2 +-
arch/powerpc/kernel/smp.c | 12 +---
arch/powerpc/platforms/cell/interrupt.c |2
-by: Srivatsa S. Bhat srivatsa.b...@linux.vnet.ibm.com
[Functions renamed to tick_broadcast* and Changelog modified by
Preeti U. Murthypre...@linux.vnet.ibm.com]
Signed-off-by: Preeti U. Murthy pre...@linux.vnet.ibm.com
Acked-by: Geoff Levand ge...@infradead.org [For the PS3 part]
---
arch
From: Preeti U Murthy pre...@linux.vnet.ibm.com
Split timer_interrupt(), which is the local timer interrupt handler on ppc
into routines called during regular interrupt handling and __timer_interrupt(),
which takes care of running local timers and collecting time related stats.
This will enable
broadcast framework to handle wakeup of CPUs from
deep idle states on such implementations is currently under discussion.
https://lkml.org/lkml/2014/1/15/86
https://lkml.org/lkml/2014/1/24/28
Either way this patchset is essential to enable handling the tick broadcast
IPIs.
---
Preeti U Murthy (1
Hi Nicolas,
On 01/30/2014 10:58 AM, Nicolas Pitre wrote:
> On Thu, 30 Jan 2014, Preeti U Murthy wrote:
>
>> Hi Nicolas,
>>
>> On 01/30/2014 02:01 AM, Nicolas Pitre wrote:
>>> On Wed, 29 Jan 2014, Nicolas Pitre wrote:
>>>
>>>> In order
Its supposed to only catch faulty
cpuidle drivers that haven't enabled IRQs on exit from idle state but
are expected to have done so, isn't it?
Thanks
Regards
Preeti U Murthy
> allowing for the warning to trig.
>
> Signed-off-by: Nicolas Pitre
>
> diff --git
but
are expected to have done so, isn't it?
Thanks
Regards
Preeti U Murthy
allowing for the warning to trig.
Signed-off-by: Nicolas Pitre n...@linaro.org
diff --git a/kernel/cpu/idle.c b/kernel/cpu/idle.c
index 988573a9a3..14ca43430a 100644
--- a/kernel/cpu/idle.c
+++ b/kernel/cpu/idle.c
Hi Nicolas,
On 01/30/2014 10:58 AM, Nicolas Pitre wrote:
On Thu, 30 Jan 2014, Preeti U Murthy wrote:
Hi Nicolas,
On 01/30/2014 02:01 AM, Nicolas Pitre wrote:
On Wed, 29 Jan 2014, Nicolas Pitre wrote:
In order to integrate cpuidle with the scheduler, we must have a better
proximity
Hi Daniel,
On 01/28/2014 02:16 PM, Daniel Lezcano wrote:
> On 01/24/2014 11:21 AM, Preeti U Murthy wrote:
>> On 01/24/2014 02:38 PM, Daniel Lezcano wrote:
>>> On 01/23/2014 12:15 PM, Preeti U Murthy wrote:
>>>> Hi Daniel,
>
notification too in this case if the
CPU in question is made the stand by CPU.
Thanks
Regards
Preeti U Murthy
-
time/cpuidle:Handle failed call to BROADCAST_ENTER on archs with
CPUIDLE_FLAG_TIMER_STOP set
From: Preeti U
notification too in this case if the
CPU in question is made the stand by CPU.
Thanks
Regards
Preeti U Murthy
-
time/cpuidle:Handle failed call to BROADCAST_ENTER on archs with
CPUIDLE_FLAG_TIMER_STOP set
From: Preeti U
Hi Daniel,
On 01/28/2014 02:16 PM, Daniel Lezcano wrote:
On 01/24/2014 11:21 AM, Preeti U Murthy wrote:
On 01/24/2014 02:38 PM, Daniel Lezcano wrote:
On 01/23/2014 12:15 PM, Preeti U Murthy wrote:
Hi Daniel,
Thank you for the review.
[ ... ]
---
drivers/cpuidle/cpuidle.c
upt occurs (which are driven prior
> + * to returning here) or if a prod occurs from another
> + * processor. When returning here, external interrupts
> + * are enabled.
> + */
> + cede_processor();
>
> - get_lppaca()->idle = 0;
> - }
&
-by: Preeti U Murthy pre...@linux.vnet.ibm.com
The consequence of this would be for other Power platforms like PowerNV,
we will need to invoke ppc_runlatch_off() and ppc_runlatch_on() in each
of the idle routines since the idle_loop_prologue() and
idle_loop_epilogue() are not invoked by them, but we
On 01/24/2014 02:38 PM, Daniel Lezcano wrote:
> On 01/23/2014 12:15 PM, Preeti U Murthy wrote:
>> Hi Daniel,
>>
>> Thank you for the review.
>>
>> On 01/22/2014 01:59 PM, Daniel Lezcano wrote:
>>> On 01/17/2014 05:33 AM, Preeti U Murthy wrote:
>>
On 01/24/2014 02:38 PM, Daniel Lezcano wrote:
On 01/23/2014 12:15 PM, Preeti U Murthy wrote:
Hi Daniel,
Thank you for the review.
On 01/22/2014 01:59 PM, Daniel Lezcano wrote:
On 01/17/2014 05:33 AM, Preeti U Murthy wrote:
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
. For such
a CPU, the BROADCAST_ENTER notification has to fail indicating that its clock
device cannot be shutdown. To make way for this support, change the return
type of tick_broadcast_oneshot_control() and hence clockevents_notify() to
indicate such scenarios.
Signed-off-by: Preeti U Murthy
as well by moving the hrtimer on to the CPU handling the
CPU_DEAD
notification.
Signed-off-by: Preeti U Murthy
[Added Changelog and code to handle reprogramming of hrtimer]
---
include/linux/clockchips.h |9 +++
kernel/time/Makefile |2 -
kernel/time/tick
the local timers stop can make use of.
Presently we are in need of this support on certain implementations of
PowerPC. This patchset has been used on PowerPC for testing with
---
Preeti U Murthy (1):
time: Change the return type of clockevents_notify() to integer
Thomas Gleixner (1
Hi Thomas,
The below patch works pretty much as is. I tried this out with deep idle
states on our system. Looking through the code and analysing corner
cases also did not bring out any issues to me. I will send out a patch
V2 of this.
Regards
Preeti U Murthy
On 01/22/2014 06:57 PM, Thomas
Hi Daniel,
Thank you for the review.
On 01/22/2014 01:59 PM, Daniel Lezcano wrote:
> On 01/17/2014 05:33 AM, Preeti U Murthy wrote:
>>
>> diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
>> index a55e68f..831b664 100644
>> --- a/drivers/cpuidle
Hi Daniel,
Thank you for the review.
On 01/22/2014 01:59 PM, Daniel Lezcano wrote:
On 01/17/2014 05:33 AM, Preeti U Murthy wrote:
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index a55e68f..831b664 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
Hi Thomas,
The below patch works pretty much as is. I tried this out with deep idle
states on our system. Looking through the code and analysing corner
cases also did not bring out any issues to me. I will send out a patch
V2 of this.
Regards
Preeti U Murthy
On 01/22/2014 06:57 PM, Thomas
where the local timers stop can make use of.
Presently we are in need of this support on certain implementations of
PowerPC. This patchset has been used on PowerPC for testing with
---
Preeti U Murthy (1):
time: Change the return type of clockevents_notify() to integer
Thomas Gleixner (1
of
the stand by CPU as well by moving the hrtimer on to the CPU handling the
CPU_DEAD
notification.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
[Added Changelog and code to handle reprogramming of hrtimer]
---
include/linux/clockchips.h |9 +++
kernel/time/Makefile
. For such
a CPU, the BROADCAST_ENTER notification has to fail indicating that its clock
device cannot be shutdown. To make way for this support, change the return
type of tick_broadcast_oneshot_control() and hence clockevents_notify() to
indicate such scenarios.
Signed-off-by: Preeti U Murthy pre
Hi Thomas,
Thank you very much for the review.
On 01/22/2014 06:57 PM, Thomas Gleixner wrote:
> On Wed, 15 Jan 2014, Preeti U Murthy wrote:
>> diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
>> index 086ad60..d61404e 100644
>> --- a/kernel/time/clockeve
Hi Thomas,
Thank you very much for the review.
On 01/22/2014 06:57 PM, Thomas Gleixner wrote:
On Wed, 15 Jan 2014, Preeti U Murthy wrote:
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 086ad60..d61404e 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time
Add deep idle states such as nap and fast sleep to the cpuidle state table
only if they are discovered from the device tree during cpuidle initialization.
Signed-off-by: Preeti U Murthy
---
drivers/cpuidle/cpuidle-powernv.c | 81 +
1 file changed, 64
support
for fast sleep, enable it in the cpuidle framework on PowerNV.
Signed-off-by: Preeti U Murthy
---
arch/powerpc/Kconfig |2 ++
arch/powerpc/kernel/time.c|2 +-
drivers/cpuidle/cpuidle-powernv.c | 42 +
3 files changed, 45
-by: Vaidyanathan Srinivasan
[Changelog modified by Preeti U. Murthy ]
Signed-off-by: Preeti U. Murthy
---
arch/powerpc/include/asm/processor.h |1 +
arch/powerpc/kernel/exceptions-64s.S | 10 -
arch/powerpc/kernel/idle_power7.S| 63 --
3 files
Signed-off-by: Vaidyanathan Srinivasan
Signed-off-by: Preeti U. Murthy
---
arch/powerpc/include/asm/opal.h|2 ++
arch/powerpc/kernel/exceptions-64s.S |2 +-
arch/powerpc/kernel/idle_power7.S | 27
arch/powerpc/platforms/po
in the broadcast mask. This newly nominated bc_cpu is woken up by
an IPI so as to queue the above mentioned hrtimer on it.
Signed-off-by: Preeti U Murthy
---
include/linux/clockchips.h |4 -
kernel/time/clockevents.c|9 +-
kernel/time/tick-broadcast.c | 192
timers to
directly call into __timer_interupt(). One of the use cases of this is the
tick broadcast IPI handling in which the sleeping CPUs need to handle the local
timers that have expired.
Signed-off-by: Preeti U Murthy
---
arch/powerpc/kernel/time.c | 81
slots are available).
So, implement the functionality of PPC_MSG_CALL_FUNC_SINGLE using
PPC_MSG_CALL_FUNC itself and release its IPI message slot, so that it can be
used for something else in the future, if desired.
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Preeti U. Murthy
Acked-by: Geoff
[Functions renamed to tick_broadcast* and Changelog modified by
Preeti U. Murthy]
Signed-off-by: Preeti U. Murthy
Acked-by: Geoff Levand [For the PS3 part]
---
arch/powerpc/include/asm/smp.h |2 +-
arch/powerpc/include/asm/time.h |1 +
arch/powerpc/kernel/smp.c
in deep idle states in which the
local timers stop.
---
Preeti U Murthy (5):
cpuidle/ppc: Split timer_interrupt() into timer handling and interrupt
handling routines
powermgt: Add OPAL call to resync timebase on wakeup
time/cpuidle: Support in tick broadcast framework in t
.
---
Preeti U Murthy (5):
cpuidle/ppc: Split timer_interrupt() into timer handling and interrupt
handling routines
powermgt: Add OPAL call to resync timebase on wakeup
time/cpuidle: Support in tick broadcast framework in the absence of
external clock device
cpuidle/powernv: Add
timers to
directly call into __timer_interupt(). One of the use cases of this is the
tick broadcast IPI handling in which the sleeping CPUs need to handle the local
timers that have expired.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/kernel/time.c | 81
...@linux.vnet.ibm.com
Signed-off-by: Preeti U. Murthy pre...@linux.vnet.ibm.com
Acked-by: Geoff Levand ge...@infradead.org [For the PS3 part]
---
arch/powerpc/include/asm/smp.h |2 +-
arch/powerpc/kernel/smp.c | 12 +---
arch/powerpc/platforms/cell/interrupt.c |2
-by: Srivatsa S. Bhat srivatsa.b...@linux.vnet.ibm.com
[Functions renamed to tick_broadcast* and Changelog modified by
Preeti U. Murthypre...@linux.vnet.ibm.com]
Signed-off-by: Preeti U. Murthy pre...@linux.vnet.ibm.com
Acked-by: Geoff Levand ge...@infradead.org [For the PS3 part]
---
arch
support
for fast sleep, enable it in the cpuidle framework on PowerNV.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/Kconfig |2 ++
arch/powerpc/kernel/time.c|2 +-
drivers/cpuidle/cpuidle-powernv.c | 42
idle state.
Signed-off-by: Vaidyanathan Srinivasan sva...@linux.vnet.ibm.com
[Changelog modified by Preeti U. Murthy pre...@linux.vnet.ibm.com]
Signed-off-by: Preeti U. Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/processor.h |1 +
arch/powerpc/kernel/exceptions-64s.S | 10
methods.
Signed-off-by: Vaidyanathan Srinivasan sva...@linux.vnet.ibm.com
Signed-off-by: Preeti U. Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/opal.h|2 ++
arch/powerpc/kernel/exceptions-64s.S |2 +-
arch/powerpc/kernel/idle_power7.S
in the broadcast mask. This newly nominated bc_cpu is woken up by
an IPI so as to queue the above mentioned hrtimer on it.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
include/linux/clockchips.h |4 -
kernel/time/clockevents.c|9 +-
kernel/time/tick-broadcast.c | 192
Add deep idle states such as nap and fast sleep to the cpuidle state table
only if they are discovered from the device tree during cpuidle initialization.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
drivers/cpuidle/cpuidle-powernv.c | 81
-by: Preeti U Murthy
Changes from V1:https://lkml.org/lkml/2014/1/14/26
1. Change the return code to success from -EINVAL due to the reason mentioned
in the changelog.
2. Add logic that the patch is addressing in the ladder governor as well.
3. Added relevant comments and removed redundant logic
-by: Preeti U Murthy pre...@linux.vnet.ibm.com
Changes from V1:https://lkml.org/lkml/2014/1/14/26
1. Change the return code to success from -EINVAL due to the reason mentioned
in the changelog.
2. Add logic that the patch is addressing in the ladder governor as well.
3. Added relevant comments and removed
Hi Paul,
On 01/15/2014 08:59 PM, Paul Gortmaker wrote:
> On 14-01-15 03:07 AM, Preeti U Murthy wrote:
>
> [...]
>
>>
>> This patchset is based on mainline commit-id:8ae516aa8b8161254d3, and the
>
> I figured I'd give this a quick sanity build test for a fe
support
for fast sleep, enable it in the cpuidle framework on PowerNV.
Signed-off-by: Preeti U Murthy
---
arch/powerpc/Kconfig |2 ++
arch/powerpc/kernel/time.c|2 +-
drivers/cpuidle/cpuidle-powernv.c | 39 +
3 files changed, 42
Add deep idle states such as nap and fast sleep to the cpuidle state table
only if they are discovered from the device tree during cpuidle initialization.
Signed-off-by: Preeti U Murthy
---
drivers/cpuidle/cpuidle-powernv.c | 81 +
1 file changed, 64
Signed-off-by: Vaidyanathan Srinivasan
Signed-off-by: Preeti U. Murthy
---
arch/powerpc/include/asm/opal.h|2 ++
arch/powerpc/kernel/exceptions-64s.S |2 +-
arch/powerpc/kernel/idle_power7.S | 27
arch/powerpc/platforms/po
in the broadcast mask. This newly nominated bc_cpu is woken up by
an IPI so as to queue the above mentioned hrtimer on it.
Signed-off-by: Preeti U Murthy
---
include/linux/clockchips.h |4 -
kernel/time/clockevents.c|9 +-
kernel/time/tick-broadcast.c | 192
-by: Vaidyanathan Srinivasan
[Changelog modified by Preeti U. Murthy ]
Signed-off-by: Preeti U. Murthy
---
arch/powerpc/include/asm/processor.h |1 +
arch/powerpc/kernel/exceptions-64s.S | 10 -
arch/powerpc/kernel/idle_power7.S| 63 --
3 files
timers to
directly call into __timer_interupt(). One of the use cases of this is the
tick broadcast IPI handling in which the sleeping CPUs need to handle the local
timers that have expired.
Signed-off-by: Preeti U Murthy
---
arch/powerpc/kernel/time.c | 73
[Functions renamed to tick_broadcast* and Changelog modified by
Preeti U. Murthy]
Signed-off-by: Preeti U. Murthy
Acked-by: Geoff Levand [For the PS3 part]
---
arch/powerpc/include/asm/smp.h |2 +-
arch/powerpc/include/asm/time.h |1 +
arch/powerpc/kernel/smp.c
ick a broadcast CPU, instead of having a dedicated one.
2. Remove the constraint of having to disable tickless idle on the broadcast
CPU by queueing a hrtimer dedicated to do broadcast.
V1 posting: https://lkml.org/lkml/2013/7/25/740.
1. Added the infrastructure to wakeup CPUs in deep idle st
slots are available).
So, implement the functionality of PPC_MSG_CALL_FUNC_SINGLE using
PPC_MSG_CALL_FUNC itself and release its IPI message slot, so that it can be
used for something else in the future, if desired.
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Preeti U. Murthy
Acked-by: Geoff
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