* [PATCH] arm64: make SCHED_CLUSTER depend on ACPI
@ 2022-04-15 7:04 ` Qing Wang
0 siblings, 0 replies; 4+ messages in thread
From: Qing Wang @ 2022-04-15 7:04 UTC (permalink / raw)
To: Catalin Marinas, Will Deacon, linux-arm-kernel, linux-kernel
Cc: vincent.guittot, peterz, wangqing
From: wangqing <11112896@bbktel.com>
cls is made up of sd through cluster_sibling, which is set by cluster_id,
cluster_id is only provided by ACPI, DT just provide package_id.
So, SCHED_CLUSTER depends on ACPI actually.
Signed-off-by: wangqing <11112896@bbktel.com>
---
arch/arm64/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 25b33feed800..edbe035cb0e3 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1199,6 +1199,7 @@ config SCHED_MC
config SCHED_CLUSTER
bool "Cluster scheduler support"
+ depends on ACPI
help
Cluster scheduler support improves the CPU scheduler's decision
making when dealing with machines that have clusters of CPUs.
--
2.27.0.windows.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] arm64: make SCHED_CLUSTER depend on ACPI
@ 2022-04-15 7:04 ` Qing Wang
0 siblings, 0 replies; 4+ messages in thread
From: Qing Wang @ 2022-04-15 7:04 UTC (permalink / raw)
To: Catalin Marinas, Will Deacon, linux-arm-kernel, linux-kernel
Cc: vincent.guittot, peterz, wangqing
From: wangqing <11112896@bbktel.com>
cls is made up of sd through cluster_sibling, which is set by cluster_id,
cluster_id is only provided by ACPI, DT just provide package_id.
So, SCHED_CLUSTER depends on ACPI actually.
Signed-off-by: wangqing <11112896@bbktel.com>
---
arch/arm64/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 25b33feed800..edbe035cb0e3 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1199,6 +1199,7 @@ config SCHED_MC
config SCHED_CLUSTER
bool "Cluster scheduler support"
+ depends on ACPI
help
Cluster scheduler support improves the CPU scheduler's decision
making when dealing with machines that have clusters of CPUs.
--
2.27.0.windows.1
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] arm64: make SCHED_CLUSTER depend on ACPI
2022-04-15 7:04 ` Qing Wang
(?)
@ 2022-04-22 1:58 ` 王擎
2022-04-22 10:26 ` Will Deacon
-1 siblings, 1 reply; 4+ messages in thread
From: 王擎 @ 2022-04-22 1:58 UTC (permalink / raw)
To: Will Deacon, linux-kernel, Dietmar Eggemann, Vincent Guittot,
Catalin Marinas
Hi Catalin, Will, Vincent, Dietmar:
What's your opinion on this patch, and I sent another patch
"Add complex scheduler level for arm64" yesterday,
Can someone make some comments so things can move forward.
Thanks,
Qing
>cls is made up of sd through cluster_sibling, which is set by cluster_id,
>cluster_id is only provided by ACPI, DT just provide package_id.
>
>So, SCHED_CLUSTER depends on ACPI actually.
>
>Signed-off-by: wangqing <11112896@bbktel.com>
>---
> arch/arm64/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
>diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>index 25b33feed800..edbe035cb0e3 100644
>--- a/arch/arm64/Kconfig
>+++ b/arch/arm64/Kconfig
>@@ -1199,6 +1199,7 @@ config SCHED_MC
>
> config SCHED_CLUSTER
> bool "Cluster scheduler support"
>+ depends on ACPI
> help
> Cluster scheduler support improves the CPU scheduler's decision
> making when dealing with machines that have clusters of CPUs.
>--
>2.7.4
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] arm64: make SCHED_CLUSTER depend on ACPI
2022-04-22 1:58 ` 王擎
@ 2022-04-22 10:26 ` Will Deacon
0 siblings, 0 replies; 4+ messages in thread
From: Will Deacon @ 2022-04-22 10:26 UTC (permalink / raw)
To: 王擎
Cc: linux-kernel, Dietmar Eggemann, Vincent Guittot, Catalin Marinas
On Fri, Apr 22, 2022 at 01:58:00AM +0000, 王擎 wrote:
> What's your opinion on this patch, and I sent another patch
> "Add complex scheduler level for arm64" yesterday,
>
> Can someone make some comments so things can move forward.
>
> >cls is made up of sd through cluster_sibling, which is set by cluster_id,
> >cluster_id is only provided by ACPI, DT just provide package_id.
I don't understand the commit message at all, I'm afraid.
Will
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-04-22 10:26 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2022-04-15 7:04 [PATCH] arm64: make SCHED_CLUSTER depend on ACPI Qing Wang
2022-04-15 7:04 ` Qing Wang
2022-04-22 1:58 ` 王擎
2022-04-22 10:26 ` Will Deacon
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