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 | 39
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
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 few
configs, but v3.13-rc1-141-g8ae516aa8b81
Hi Srivatsa,
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
On 01/14/2014 01:07 PM, Srivatsa S. Bhat wrote:
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
low thread
priority.
Thanks
Regards
Preeti U Murthy
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Hi Deepthi,
On 01/13/2014 09:27 AM, Deepthi Dharwar wrote:
On 01/09/2014 10:35 AM, Preeti U Murthy wrote:
Commit fbd7740fdfdf9475f switched pseries cpu idle handling from complete
idle
loops to ppc_md.powersave functions. Earlier to this switch,
ppc64_runlatch_off() had to be called in each
Hi Mikey
I have the patch with the changelog according to your suggestion below.
Thanks
On 01/13/2014 11:08 AM, Michael Ellerman wrote:
On Thu, 2014-01-09 at 10:35 +0530, Preeti U Murthy wrote:
Commit fbd7740fdfdf9475f switched pseries cpu idle handling from complete
idle
loops
were carried over subsequent enhancements to the pseries
cpuidle routines. This patch takes care of eliminating this redundancy.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/processor_idle.c |3 ---
1 file changed, 3 deletions(-)
diff --git
Hi,
The patch had some compile time fixes to be done. It was accidentally mailed
out before doing so. Below is the right patch. Apologies for the same.
Thanks
Regards
Preeti U Murthy
-
time: Support in tick broadcast
bc_cpu is woken up by
an IPI so as to queue the above mentioned hrtimer on itself.
This patch is compile tested only.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
include/linux/clockchips.h |4 +
kernel/time/clockevents.c|8 +-
kernel/time/tick-broadcast.c | 157
Hi Ben,
On 12/13/2013 10:47 AM, Benjamin Herrenschmidt wrote:
On Fri, 2013-12-13 at 09:49 +0530, Preeti U Murthy wrote:
On some architectures, in certain CPU deep idle states the local timers stop.
An external clock device is used to wakeup these CPUs. The kernel support
for the
wakeup
Hi,
On 12/02/2013 03:27 PM, Alexander Graf wrote:
On 02.12.2013, at 05:01, Preeti U Murthy pre...@linux.vnet.ibm.com wrote:
Hi,
On 11/30/2013 11:15 PM, Alexander Graf wrote:
Hi Ben,
With current linus master (3.13-rc2+) I'm facing an interesting issue with
SMT disabling on p7. When I
Hi Thomas,
On 11/29/2013 08:09 PM, Thomas Gleixner wrote:
On Fri, 29 Nov 2013, Preeti U Murthy wrote:
+static enum hrtimer_restart handle_broadcast(struct hrtimer *hrtimer)
+{
+struct clock_event_device *bc_evt = bc_timer;
+ktime_t interval, next_bc_tick, now;
+
+now
Hi Thomas,
On 11/29/2013 05:28 PM, Thomas Gleixner wrote:
On Fri, 29 Nov 2013, Preeti U Murthy wrote:
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b44b52c..cafa788 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -129,6 +129,8 @@ config PPC
select
to the regression caused by the same commit id.
Thanks
Regards
Preeti U Murthy
---
commit 42eb088ed246a5a817bb45a8b32fe234cf1c0f8b
Author: Peter Zijlstra pet...@infradead.org
Date: Tue Nov 19 16:41:49 2013 +0100
sched: Avoid NULL dereference on sd_busy
Commit 37dc6b50cee9 (sched: Remove
.
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 states in which the
local timers stop.
---
Preeti U Murthy
-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
...@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
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 | 73
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
repeats.
Protect the region of nomination,de-nomination and check for existence of
broadcast
CPU with a lock to ensure synchronization between them.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/time.h |1
arch/powerpc/kernel/time.c
-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/Kconfig|2 +
arch/powerpc/include/asm/time.h |1 +
arch/powerpc/kernel/time.c | 58 ++-
3 files changed, 60 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/Kconfig b/arch
so as to not
miss wakeups under such scenarios.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/time.h |1 +
arch/powerpc/kernel/time.c |1 +
drivers/cpuidle/cpuidle-powerpc-book3s.c | 22 ++
3 files
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-powerpc-book3s.c | 81
be incremented/decremented.
Resulting is nohz_kick_needed returning 0.
Right and it *should* return 0. There is no sibling domain that can
offload tasks from it. Therefore there is no point kicking nohz idle
balance.
Regards
Preeti U Murthy
Thanks,
Kamalesh
domain-sd_busy where it is relevant.
3. Introduce sd_asym to represent the sched domain where asymmetric load
balancing has to be done.
---
Preeti U Murthy (1):
sched: Remove un-necessary iteration over sched domains to update
nr_busy_cpus
Vaidyanathan Srinivasan (1):
sched: Fix
nr_busy_cpus parameter is used by nohz_kick_needed() to find out the number
of busy cpus in a sched domain which has SD_SHARE_PKG_RESOURCES flag set.
Therefore instead of updating nr_busy_cpus at every level of sched domain,
since it is irrelevant, we can update this parameter only at the parent
The changelog has missed mentioning the introduction of sd_asym per_cpu sched
domain.
Apologies for this. The patch with the changelog including mention of sd_asym is
pasted below.
Regards
Preeti U Murthy
---
sched: Remove un-necessary iteration over sched domains to update
Hi Peter,
On 10/28/2013 07:20 PM, Peter Zijlstra wrote:
On Thu, Oct 24, 2013 at 01:37:38PM +0530, Preeti U Murthy wrote:
kernel/sched/core.c |5 +
kernel/sched/fair.c | 38 --
kernel/sched/sched.h |1 +
3 files changed, 26 insertions
Hi Peter,
On 10/28/2013 09:23 PM, Peter Zijlstra wrote:
On Mon, Oct 21, 2013 at 05:15:02PM +0530, Vaidyanathan Srinivasan wrote:
From: Preeti U Murthy pre...@linux.vnet.ibm.com
The current logic in load balance is such that after picking the
busiest group, the load is attempted to be moved
this just at the SIBLINGS level? Having the hyper
threads busy due to the scenario described in the changelog is bad for
performance.
Regards
Preeti U Murthy
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Hi Vincent,
I have addressed your comments and below is the fresh patch. This patch
applies on PATCH 2/3 posted in this thread.
Regards
Preeti U Murthy
sched:Remove un-necessary iterations over sched domains to update/query
nr_busy_cpus
From: Preeti U Murthy pre...@linux.vnet.ibm.com
. sd_busy therefore is irrelevant for asymmetric load
balancing.
Regards
Preeti U Murthy
START_PATCH---
sched: Fix nohz_kick_needed()
---
kernel/sched/core.c |4
kernel/sched/fair.c | 40 ++--
kernel/sched
this a thought and get back.
Regards
Preeti U Murthy
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machine, there will be a CPU domain encompassing the
socket and the MC domain will encompass a core. nohz_idle load balancer
will kick in if both the threads in the core have tasks running on them.
This is fair enough because the threads share the resources of the core.
Regards
Preeti U Murthy
the scalability issue. We also don't need to get to
sd-parent to get the nr_busy parameter for the sake of nohz_kick_needed().
What do you think?
Regards
Preeti U Murthy
This nohz stuff really needs to be re-thought and made more scalable --
its a royal pain :/
kernel/sched/core.c | 4
On 10/23/2013 09:30 AM, Preeti U Murthy wrote:
Hi Peter,
On 10/23/2013 03:41 AM, Peter Zijlstra wrote:
On Mon, Oct 21, 2013 at 05:14:42PM +0530, Vaidyanathan Srinivasan wrote:
kernel/sched/fair.c | 19 +--
1 file changed, 13 insertions(+), 6 deletions(-)
diff --git
...@linux.vnet.ibm.com
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/smp.h |2 +-
arch/powerpc/kernel/smp.c | 12 +---
arch/powerpc/platforms/cell/interrupt.c |2 +-
arch/powerpc/platforms/ps3/smp.c|2 +-
4 files changed, 8
for all their comments and suggestions so far.
---
Preeti U Murthy (4):
cpuidle/ppc: Split timer_interrupt() into timer handling and interrupt
handling routines
cpuidle/ppc: Add basic infrastructure to support the broadcast framework
on ppc
cpuidle/ppc: Introduce the deep idle
() into routines performed during regular
interrupt handling and __timer_interrupt(), which takes care of running local
timers and collecting time related stats. Now on a broadcast ipi, call
__timer_interrupt().
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/kernel/time.c
-off-by: Srivatsa S. Bhat srivatsa.b...@linux.vnet.ibm.com
[Changelog modified by pre...@linux.vnet.ibm.com]
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/smp.h |3 ++-
arch/powerpc/include/asm/time.h |1 +
arch/powerpc/kernel/smp.c
the broadcast ipi, set the
decrementers_next_tb
to now before calling __timer_interrupt().
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/Kconfig|1 +
arch/powerpc/include/asm/time.h |1 +
arch/powerpc/kernel/time.c | 69
was about to fire on it. Therefore the newly nominated broadcast cpu
should set the broadcast hrtimer on itself to expire immediately so as to not
miss wakeups under such scenarios.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/time.h |1 +
arch
cycle repeats.
Protect the region of nomination,de-nomination and check for existence of
broadcast
cpu with a lock to ensure synchronization between them.
[1] tick_handle_oneshot_broadcast() or tick_handle_periodic_broadcast().
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch
Hi Ben,
On 08/22/2013 08:57 AM, Benjamin Herrenschmidt wrote:
On Wed, 2013-08-14 at 17:26 +0530, Preeti U Murthy wrote:
static irqreturn_t timer_action(int irq, void *data)
{
-timer_interrupt();
+decrementer_timer_interrupt();
return IRQ_HANDLED;
}
I don't completely
Hi Ben,
On 08/22/2013 08:58 AM, Benjamin Herrenschmidt wrote:
On Wed, 2013-08-14 at 17:26 +0530, Preeti U Murthy wrote:
This patch hooks into the existing broadcast framework along with the support
that this patchset introduces for ppc, and the cpuidle driver backend
for powernv(posted out
Hi Ben
On 08/22/2013 08:40 AM, Benjamin Herrenschmidt wrote:
On Wed, 2013-08-14 at 17:26 +0530, Preeti U Murthy wrote:
-static irqreturn_t unused_action(int irq, void *data)
+static irqreturn_t timer_action(int irq, void *data)
{
- /* This slot is unused and hence available for use
on powernv
Patch[5/6]: Dynamically pick a broadcast CPU
Patch[6/6]: Remove the constraint of having to disable tickless idle on the
broadcast cpu, by queueing a hrtimer exclusively to do broadcast handling.
---
Preeti U Murthy (4):
cpuidle/ppc: Add timer offload framework to support deep idle
efficiently.
Signed-off-by: Srivatsa S. Bhat srivatsa.b...@linux.vnet.ibm.com
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/smp.h |3 ++-
arch/powerpc/kernel/smp.c | 19 +++
arch/powerpc/platforms/cell/interrupt.c |2
...@linux.vnet.ibm.com
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/smp.h |2 +-
arch/powerpc/kernel/smp.c | 12 +---
arch/powerpc/platforms/cell/interrupt.c |2 +-
arch/powerpc/platforms/ps3/smp.c|2 +-
4 files changed, 8
interrupt is called on the cpu
in deep idle state to handle the local events.
The current design and implementation of the timer offload framework supports
the ONESHOT tick mode but not the PERIODIC mode.
Signed-off-by: Preeti U. Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/time.h
sleep on ppc.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/platforms/powernv/processor_idle.c | 48 +++
1 file changed, 47 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/processor_idle.c
b/arch/powerpc/platforms
-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/time.h |1
arch/powerpc/kernel/time.c | 10 ++--
arch/powerpc/platforms/powernv/processor_idle.c | 56 +++
3 files changed, 53 insertions(+), 14 deletions
In the current design we were depending on the timer interrupt on the
bc_cpu to trigger broadcast handling. In tickless idle, timer interrupts
could be many ticks away which could result in missed wakeups on CPUs in deep
idle states. Disabling tickless idle on the bc_cpu is not good for
notifiers from
other architectures into the cpuidle framework as well?
Regards
Preeti U Murthy
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Hi Dongsheng,
On 07/31/2013 11:16 AM, Wang Dongsheng-B40534 wrote:
Hi Preeti,
-Original Message-
From: Preeti U Murthy [mailto:pre...@linux.vnet.ibm.com]
Sent: Wednesday, July 31, 2013 12:00 PM
To: Wang Dongsheng-B40534
Cc: Deepthi Dharwar; b...@kernel.crashing.org; daniel.lezc
, but
the low level handling of the entry into idle states should be taken
care of by the architecture.
Your recent patch :
cpuidle: add freescale e500 family porcessors idle support IMO should
hook onto the backend cpuidle driver that this patchset provides.
Regards
Preeti U Murthy
Hi,
On 07/29/2013 10:58 AM, Vaidyanathan Srinivasan wrote:
* Preeti U Murthy pre...@linux.vnet.ibm.com [2013-07-27 13:20:37]:
Hi Ben,
On 07/27/2013 12:00 PM, Benjamin Herrenschmidt wrote:
On Fri, 2013-07-26 at 08:09 +0530, Preeti U Murthy wrote:
*The lapic of a broadcast CPU is active
Hi Ben,
On 07/27/2013 12:00 PM, Benjamin Herrenschmidt wrote:
On Fri, 2013-07-26 at 08:09 +0530, Preeti U Murthy wrote:
*The lapic of a broadcast CPU is active always*. Say CPUX, wants the
broadcast CPU to wake it up at timeX. Since we cannot program the lapic
of a remote CPU, CPUX will need
Hi Li,
On 07/26/2013 03:35 PM, Li Yang-R58472 wrote:
-Original Message-
From: linux-pm-ow...@vger.kernel.org [mailto:linux-pm-
ow...@vger.kernel.org] On Behalf Of Preeti U Murthy
Sent: Thursday, July 25, 2013 5:03 PM
To: b...@kernel.crashing.org; paul.gortma...@windriver.com
...@linux.vnet.ibm.com
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/smp.h |2 +-
arch/powerpc/kernel/smp.c | 12 +---
arch/powerpc/platforms/cell/interrupt.c |2 +-
arch/powerpc/platforms/ps3/smp.c|2 +-
4 files changed, 8
makes use of the timer offload
framework that the patches Patch[1/5] to Patch[4/5] build.
---
Preeti U Murthy (3):
cpuidle/ppc: Add timer offload framework to support deep idle states
cpuidle/ppc: CPU goes tickless if there are no arch-specific constraints
cpuidle/ppc: Add longnap
efficiently.
Signed-off-by: Srivatsa S. Bhat srivatsa.b...@linux.vnet.ibm.com
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/smp.h |3 ++-
arch/powerpc/kernel/smp.c | 19 +++
arch/powerpc/platforms/cell/interrupt.c |2
. On
a broadcast ipi the event handler for a timer interrupt is called on the cpu
in deep idle state to handle the local events.
The current design and implementation of the timer offload framework supports
the ONESHOT tick mode but not the PERIODIC mode.
Signed-off-by: Preeti U. Murthy pre
disables tickless idle,
is a system wide setting. Hence resort to an arch specific call to check if a
cpu
can go into tickless idle.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/kernel/time.c |5 +
kernel/time/tick-sched.c |7 +++
2 files changed, 12
-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/platforms/powernv/processor_idle.c | 48 +++
1 file changed, 47 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/processor_idle.c
b/arch/powerpc/platforms/powernv/processor_idle.c
index
Hi Frederic,
On 07/25/2013 07:00 PM, Frederic Weisbecker wrote:
On Thu, Jul 25, 2013 at 02:33:02PM +0530, Preeti U Murthy wrote:
In the current design of timer offload framework, the broadcast cpu should
*not* go into tickless idle so as to avoid missed wakeups on CPUs in deep
idle states
Hi Frederic,
On 07/25/2013 07:00 PM, Frederic Weisbecker wrote:
On Thu, Jul 25, 2013 at 02:33:02PM +0530, Preeti U Murthy wrote:
In the current design of timer offload framework, the broadcast cpu should
*not* go into tickless idle so as to avoid missed wakeups on CPUs in deep
idle states
Hi Paul,
On 07/26/2013 08:49 AM, Paul Mackerras wrote:
On Fri, Jul 26, 2013 at 08:09:23AM +0530, Preeti U Murthy wrote:
Hi Frederic,
On 07/25/2013 07:00 PM, Frederic Weisbecker wrote:
Hi Preeti,
I'm not exactly sure why you can't enter the broadcast CPU in dynticks idle
mode.
I read
Hi Frederic,
I apologise for the confusion. As Paul pointed out maybe the usage of
the term lapic is causing a large amount of confusion. So please see the
clarification below. Maybe it will help answer your question.
On 07/26/2013 08:09 AM, Preeti U Murthy wrote:
Hi Frederic,
On 07/25/2013
makes use of the timer offload
framework that the patches Patch[1/5] to Patch[4/5] build.
This patch series is being resent to clarify certain ambiguity in the patch
descriptions from the previous post. Discussion around this:
https://lkml.org/lkml/2013/7/25/754
---
Preeti U Murthy (3):
cpuidle
efficiently.
Signed-off-by: Srivatsa S. Bhat srivatsa.b...@linux.vnet.ibm.com
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/smp.h |3 ++-
arch/powerpc/kernel/smp.c | 19 +++
arch/powerpc/platforms/cell/interrupt.c |2
is called on the cpu
in deep idle state to handle the local events.
The current design and implementation of the timer offload framework supports
the ONESHOT tick mode but not the PERIODIC mode.
Signed-off-by: Preeti U. Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/time.h
-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/platforms/powernv/processor_idle.c | 48 +++
1 file changed, 47 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/processor_idle.c
b/arch/powerpc/platforms/powernv/processor_idle.c
index
...@linux.vnet.ibm.com
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/smp.h |2 +-
arch/powerpc/kernel/smp.c | 12 +---
arch/powerpc/platforms/cell/interrupt.c |2 +-
arch/powerpc/platforms/ps3/smp.c|2 +-
4 files changed, 8
disables tickless idle,
is a system wide setting. Hence resort to an arch specific call to check if a
cpu
can go into tickless idle.
Signed-off-by: Preeti U Murthy pre...@linux.vnet.ibm.com
---
arch/powerpc/kernel/time.c |5 +
kernel/time/tick-sched.c |7 +++
2 files changed, 12
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