* [PATCH] arm64: enable generic idle loop
@ 2015-08-21 3:40 ` Leo Yan
0 siblings, 0 replies; 16+ messages in thread
From: Leo Yan @ 2015-08-21 3:40 UTC (permalink / raw)
To: linux-arm-kernel
Enable generic idle loop for ARM64, so can support for hlt/nohlt
command line options to override default idle loop behavior.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
arch/arm64/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 0f6edb1..c404e74 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -31,6 +31,7 @@ config ARM64
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
select GENERIC_CPU_AUTOPROBE
select GENERIC_EARLY_IOREMAP
+ select GENERIC_IDLE_POLL_SETUP
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select GENERIC_IRQ_SHOW_LEVEL
--
1.9.1
^ permalink raw reply related [flat|nested] 16+ messages in thread
* [PATCH] arm64: enable generic idle loop
@ 2015-08-21 3:40 ` Leo Yan
0 siblings, 0 replies; 16+ messages in thread
From: Leo Yan @ 2015-08-21 3:40 UTC (permalink / raw)
To: Catalin Marinas, Will Deacon, linux-arm-kernel, linux-kernel; +Cc: Leo Yan
Enable generic idle loop for ARM64, so can support for hlt/nohlt
command line options to override default idle loop behavior.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
arch/arm64/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 0f6edb1..c404e74 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -31,6 +31,7 @@ config ARM64
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
select GENERIC_CPU_AUTOPROBE
select GENERIC_EARLY_IOREMAP
+ select GENERIC_IDLE_POLL_SETUP
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select GENERIC_IRQ_SHOW_LEVEL
--
1.9.1
^ permalink raw reply related [flat|nested] 16+ messages in thread
* [PATCH] arm64: enable generic idle loop
2015-08-21 3:40 ` Leo Yan
@ 2015-08-21 9:00 ` Catalin Marinas
-1 siblings, 0 replies; 16+ messages in thread
From: Catalin Marinas @ 2015-08-21 9:00 UTC (permalink / raw)
To: linux-arm-kernel
On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> Enable generic idle loop for ARM64, so can support for hlt/nohlt
> command line options to override default idle loop behavior.
Just curious, what do you need this for?
--
Catalin
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH] arm64: enable generic idle loop
@ 2015-08-21 9:00 ` Catalin Marinas
0 siblings, 0 replies; 16+ messages in thread
From: Catalin Marinas @ 2015-08-21 9:00 UTC (permalink / raw)
To: Leo Yan; +Cc: Will Deacon, linux-arm-kernel, linux-kernel
On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> Enable generic idle loop for ARM64, so can support for hlt/nohlt
> command line options to override default idle loop behavior.
Just curious, what do you need this for?
--
Catalin
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH] arm64: enable generic idle loop
2015-08-21 9:00 ` Catalin Marinas
@ 2015-08-21 9:14 ` Leo Yan
-1 siblings, 0 replies; 16+ messages in thread
From: Leo Yan @ 2015-08-21 9:14 UTC (permalink / raw)
To: linux-arm-kernel
On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > command line options to override default idle loop behavior.
>
> Just curious, what do you need this for?
With this config, usually we can add "nohlt" in command line to force
the cpu will never be powered off; so can quickly narrow down if some
issues are related with cpuidle or not.
And if CPU is powered off, then its debug logic also will be powered off.
So we can simply use this method to let debugger always hot connect with
the target CPU.
Thanks,
Leo Yan
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH] arm64: enable generic idle loop
@ 2015-08-21 9:14 ` Leo Yan
0 siblings, 0 replies; 16+ messages in thread
From: Leo Yan @ 2015-08-21 9:14 UTC (permalink / raw)
To: Catalin Marinas; +Cc: Will Deacon, linux-arm-kernel, linux-kernel
On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > command line options to override default idle loop behavior.
>
> Just curious, what do you need this for?
With this config, usually we can add "nohlt" in command line to force
the cpu will never be powered off; so can quickly narrow down if some
issues are related with cpuidle or not.
And if CPU is powered off, then its debug logic also will be powered off.
So we can simply use this method to let debugger always hot connect with
the target CPU.
Thanks,
Leo Yan
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH] arm64: enable generic idle loop
2015-08-21 9:14 ` Leo Yan
@ 2015-08-21 15:54 ` Catalin Marinas
-1 siblings, 0 replies; 16+ messages in thread
From: Catalin Marinas @ 2015-08-21 15:54 UTC (permalink / raw)
To: linux-arm-kernel
On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > command line options to override default idle loop behavior.
> >
> > Just curious, what do you need this for?
>
> With this config, usually we can add "nohlt" in command line to force
> the cpu will never be powered off; so can quickly narrow down if some
> issues are related with cpuidle or not.
>
> And if CPU is powered off, then its debug logic also will be powered off.
> So we can simply use this method to let debugger always hot connect with
> the target CPU.
OK.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH] arm64: enable generic idle loop
@ 2015-08-21 15:54 ` Catalin Marinas
0 siblings, 0 replies; 16+ messages in thread
From: Catalin Marinas @ 2015-08-21 15:54 UTC (permalink / raw)
To: Leo Yan; +Cc: Will Deacon, linux-kernel, linux-arm-kernel
On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > command line options to override default idle loop behavior.
> >
> > Just curious, what do you need this for?
>
> With this config, usually we can add "nohlt" in command line to force
> the cpu will never be powered off; so can quickly narrow down if some
> issues are related with cpuidle or not.
>
> And if CPU is powered off, then its debug logic also will be powered off.
> So we can simply use this method to let debugger always hot connect with
> the target CPU.
OK.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH] arm64: enable generic idle loop
2015-08-21 15:54 ` Catalin Marinas
@ 2015-09-15 11:20 ` Leo Yan
-1 siblings, 0 replies; 16+ messages in thread
From: Leo Yan @ 2015-09-15 11:20 UTC (permalink / raw)
To: linux-arm-kernel
Hi Will,
On Fri, Aug 21, 2015 at 04:54:25PM +0100, Catalin Marinas wrote:
> On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > > command line options to override default idle loop behavior.
> > >
> > > Just curious, what do you need this for?
> >
> > With this config, usually we can add "nohlt" in command line to force
> > the cpu will never be powered off; so can quickly narrow down if some
> > issues are related with cpuidle or not.
> >
> > And if CPU is powered off, then its debug logic also will be powered off.
> > So we can simply use this method to let debugger always hot connect with
> > the target CPU.
>
> OK.
>
> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Suppose you have missed this patch at previous merge window,
so just for reminding.
Thanks,
Leo Yan
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH] arm64: enable generic idle loop
@ 2015-09-15 11:20 ` Leo Yan
0 siblings, 0 replies; 16+ messages in thread
From: Leo Yan @ 2015-09-15 11:20 UTC (permalink / raw)
To: Catalin Marinas; +Cc: Will Deacon, linux-kernel, linux-arm-kernel
Hi Will,
On Fri, Aug 21, 2015 at 04:54:25PM +0100, Catalin Marinas wrote:
> On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > > command line options to override default idle loop behavior.
> > >
> > > Just curious, what do you need this for?
> >
> > With this config, usually we can add "nohlt" in command line to force
> > the cpu will never be powered off; so can quickly narrow down if some
> > issues are related with cpuidle or not.
> >
> > And if CPU is powered off, then its debug logic also will be powered off.
> > So we can simply use this method to let debugger always hot connect with
> > the target CPU.
>
> OK.
>
> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Suppose you have missed this patch at previous merge window,
so just for reminding.
Thanks,
Leo Yan
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH] arm64: enable generic idle loop
2015-09-15 11:20 ` Leo Yan
@ 2015-09-15 14:31 ` Catalin Marinas
-1 siblings, 0 replies; 16+ messages in thread
From: Catalin Marinas @ 2015-09-15 14:31 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Sep 15, 2015 at 07:20:08PM +0800, Leo Yan wrote:
> On Fri, Aug 21, 2015 at 04:54:25PM +0100, Catalin Marinas wrote:
> > On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> > > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > > > command line options to override default idle loop behavior.
> > > >
> > > > Just curious, what do you need this for?
> > >
> > > With this config, usually we can add "nohlt" in command line to force
> > > the cpu will never be powered off; so can quickly narrow down if some
> > > issues are related with cpuidle or not.
> > >
> > > And if CPU is powered off, then its debug logic also will be powered off.
> > > So we can simply use this method to let debugger always hot connect with
> > > the target CPU.
> >
> > OK.
> >
> > Acked-by: Catalin Marinas <catalin.marinas@arm.com>
>
> Suppose you have missed this patch at previous merge window,
> so just for reminding.
It looks like it missed the merging window. Will, can this still be
picked for 4.3? If not, it will be 4.4.
--
Catalin
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH] arm64: enable generic idle loop
@ 2015-09-15 14:31 ` Catalin Marinas
0 siblings, 0 replies; 16+ messages in thread
From: Catalin Marinas @ 2015-09-15 14:31 UTC (permalink / raw)
To: Leo Yan; +Cc: Will Deacon, linux-kernel, linux-arm-kernel
On Tue, Sep 15, 2015 at 07:20:08PM +0800, Leo Yan wrote:
> On Fri, Aug 21, 2015 at 04:54:25PM +0100, Catalin Marinas wrote:
> > On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> > > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > > > command line options to override default idle loop behavior.
> > > >
> > > > Just curious, what do you need this for?
> > >
> > > With this config, usually we can add "nohlt" in command line to force
> > > the cpu will never be powered off; so can quickly narrow down if some
> > > issues are related with cpuidle or not.
> > >
> > > And if CPU is powered off, then its debug logic also will be powered off.
> > > So we can simply use this method to let debugger always hot connect with
> > > the target CPU.
> >
> > OK.
> >
> > Acked-by: Catalin Marinas <catalin.marinas@arm.com>
>
> Suppose you have missed this patch at previous merge window,
> so just for reminding.
It looks like it missed the merging window. Will, can this still be
picked for 4.3? If not, it will be 4.4.
--
Catalin
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH] arm64: enable generic idle loop
2015-09-15 14:31 ` Catalin Marinas
@ 2015-09-15 14:44 ` Will Deacon
-1 siblings, 0 replies; 16+ messages in thread
From: Will Deacon @ 2015-09-15 14:44 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Sep 15, 2015 at 03:31:35PM +0100, Catalin Marinas wrote:
> On Tue, Sep 15, 2015 at 07:20:08PM +0800, Leo Yan wrote:
> > On Fri, Aug 21, 2015 at 04:54:25PM +0100, Catalin Marinas wrote:
> > > On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> > > > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > > > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > > > > command line options to override default idle loop behavior.
> > > > >
> > > > > Just curious, what do you need this for?
> > > >
> > > > With this config, usually we can add "nohlt" in command line to force
> > > > the cpu will never be powered off; so can quickly narrow down if some
> > > > issues are related with cpuidle or not.
> > > >
> > > > And if CPU is powered off, then its debug logic also will be powered off.
> > > > So we can simply use this method to let debugger always hot connect with
> > > > the target CPU.
> > >
> > > OK.
> > >
> > > Acked-by: Catalin Marinas <catalin.marinas@arm.com>
> >
> > Suppose you have missed this patch at previous merge window,
> > so just for reminding.
>
> It looks like it missed the merging window. Will, can this still be
> picked for 4.3? If not, it will be 4.4.
Yeah, it's harmless enough to pick up with the current crop of fixes.
Sorry I missed it.
Will
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH] arm64: enable generic idle loop
@ 2015-09-15 14:44 ` Will Deacon
0 siblings, 0 replies; 16+ messages in thread
From: Will Deacon @ 2015-09-15 14:44 UTC (permalink / raw)
To: Catalin Marinas
Cc: leo.yan@linaro.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
On Tue, Sep 15, 2015 at 03:31:35PM +0100, Catalin Marinas wrote:
> On Tue, Sep 15, 2015 at 07:20:08PM +0800, Leo Yan wrote:
> > On Fri, Aug 21, 2015 at 04:54:25PM +0100, Catalin Marinas wrote:
> > > On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> > > > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > > > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > > > > command line options to override default idle loop behavior.
> > > > >
> > > > > Just curious, what do you need this for?
> > > >
> > > > With this config, usually we can add "nohlt" in command line to force
> > > > the cpu will never be powered off; so can quickly narrow down if some
> > > > issues are related with cpuidle or not.
> > > >
> > > > And if CPU is powered off, then its debug logic also will be powered off.
> > > > So we can simply use this method to let debugger always hot connect with
> > > > the target CPU.
> > >
> > > OK.
> > >
> > > Acked-by: Catalin Marinas <catalin.marinas@arm.com>
> >
> > Suppose you have missed this patch at previous merge window,
> > so just for reminding.
>
> It looks like it missed the merging window. Will, can this still be
> picked for 4.3? If not, it will be 4.4.
Yeah, it's harmless enough to pick up with the current crop of fixes.
Sorry I missed it.
Will
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH] arm64: enable generic idle loop
2015-09-15 14:44 ` Will Deacon
@ 2015-09-15 14:51 ` Leo Yan
-1 siblings, 0 replies; 16+ messages in thread
From: Leo Yan @ 2015-09-15 14:51 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Sep 15, 2015 at 03:44:09PM +0100, Will Deacon wrote:
> On Tue, Sep 15, 2015 at 03:31:35PM +0100, Catalin Marinas wrote:
> > On Tue, Sep 15, 2015 at 07:20:08PM +0800, Leo Yan wrote:
> > > On Fri, Aug 21, 2015 at 04:54:25PM +0100, Catalin Marinas wrote:
> > > > On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> > > > > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > > > > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > > > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > > > > > command line options to override default idle loop behavior.
> > > > > >
> > > > > > Just curious, what do you need this for?
> > > > >
> > > > > With this config, usually we can add "nohlt" in command line to force
> > > > > the cpu will never be powered off; so can quickly narrow down if some
> > > > > issues are related with cpuidle or not.
> > > > >
> > > > > And if CPU is powered off, then its debug logic also will be powered off.
> > > > > So we can simply use this method to let debugger always hot connect with
> > > > > the target CPU.
> > > >
> > > > OK.
> > > >
> > > > Acked-by: Catalin Marinas <catalin.marinas@arm.com>
> > >
> > > Suppose you have missed this patch at previous merge window,
> > > so just for reminding.
> >
> > It looks like it missed the merging window. Will, can this still be
> > picked for 4.3? If not, it will be 4.4.
>
> Yeah, it's harmless enough to pick up with the current crop of fixes.
> Sorry I missed it.
It's fine and thanks :)
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH] arm64: enable generic idle loop
@ 2015-09-15 14:51 ` Leo Yan
0 siblings, 0 replies; 16+ messages in thread
From: Leo Yan @ 2015-09-15 14:51 UTC (permalink / raw)
To: Will Deacon
Cc: Catalin Marinas, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
On Tue, Sep 15, 2015 at 03:44:09PM +0100, Will Deacon wrote:
> On Tue, Sep 15, 2015 at 03:31:35PM +0100, Catalin Marinas wrote:
> > On Tue, Sep 15, 2015 at 07:20:08PM +0800, Leo Yan wrote:
> > > On Fri, Aug 21, 2015 at 04:54:25PM +0100, Catalin Marinas wrote:
> > > > On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> > > > > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > > > > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > > > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > > > > > command line options to override default idle loop behavior.
> > > > > >
> > > > > > Just curious, what do you need this for?
> > > > >
> > > > > With this config, usually we can add "nohlt" in command line to force
> > > > > the cpu will never be powered off; so can quickly narrow down if some
> > > > > issues are related with cpuidle or not.
> > > > >
> > > > > And if CPU is powered off, then its debug logic also will be powered off.
> > > > > So we can simply use this method to let debugger always hot connect with
> > > > > the target CPU.
> > > >
> > > > OK.
> > > >
> > > > Acked-by: Catalin Marinas <catalin.marinas@arm.com>
> > >
> > > Suppose you have missed this patch at previous merge window,
> > > so just for reminding.
> >
> > It looks like it missed the merging window. Will, can this still be
> > picked for 4.3? If not, it will be 4.4.
>
> Yeah, it's harmless enough to pick up with the current crop of fixes.
> Sorry I missed it.
It's fine and thanks :)
^ permalink raw reply [flat|nested] 16+ messages in thread
end of thread, other threads:[~2015-09-15 14:51 UTC | newest]
Thread overview: 16+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-08-21 3:40 [PATCH] arm64: enable generic idle loop Leo Yan
2015-08-21 3:40 ` Leo Yan
2015-08-21 9:00 ` Catalin Marinas
2015-08-21 9:00 ` Catalin Marinas
2015-08-21 9:14 ` Leo Yan
2015-08-21 9:14 ` Leo Yan
2015-08-21 15:54 ` Catalin Marinas
2015-08-21 15:54 ` Catalin Marinas
2015-09-15 11:20 ` Leo Yan
2015-09-15 11:20 ` Leo Yan
2015-09-15 14:31 ` Catalin Marinas
2015-09-15 14:31 ` Catalin Marinas
2015-09-15 14:44 ` Will Deacon
2015-09-15 14:44 ` Will Deacon
2015-09-15 14:51 ` Leo Yan
2015-09-15 14:51 ` Leo Yan
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