[PATCH] riscv: Kconfig: enable SCHED_MC kconfig

[PATCH] riscv: Kconfig: enable SCHED_MC kconfig

[Song Shuai]

RISC-V now builds the sched domain based on the simple possible map.

Enable SCHED_MC to make the building based on cpu_coregroup_mask()
which also takes care of the NUMA and cores with LLC.

Signed-off-by: Song Shuai <suagrfillet@gmail.com>
---
 arch/riscv/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index c5e42cc37604..5b9fdc1a619a 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -320,6 +320,14 @@ config SMP
 
 	  If you don't know what to do here, say N.
 
+config SCHED_MC
+	bool "Multi-core scheduler support"
+	depends on SMP
+	help
+	  Multi-core scheduler support improves the CPU scheduler's decision
+	  making when dealing with multi-core CPU chips at a cost of slightly
+	  increased overhead in some places. If unsure say N here.
+
 config NR_CPUS
 	int "Maximum number of CPUs (2-512)"
 	depends on SMP
-- 
2.20.1

Re: [PATCH] riscv: Kconfig: enable SCHED_MC kconfig

[Conor Dooley]

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On Fri, Mar 10, 2023 at 07:03:36PM +0800, Song Shuai wrote:
> RISC-V now builds the sched domain based on the simple possible map.
> 
> Enable SCHED_MC to make the building based on cpu_coregroup_mask()
> which also takes care of the NUMA and cores with LLC.
> 
> Signed-off-by: Song Shuai <suagrfillet@gmail.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> ---
>  arch/riscv/Kconfig | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index c5e42cc37604..5b9fdc1a619a 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -320,6 +320,14 @@ config SMP
>  
>  	  If you don't know what to do here, say N.
>  
> +config SCHED_MC
> +	bool "Multi-core scheduler support"
> +	depends on SMP
> +	help
> +	  Multi-core scheduler support improves the CPU scheduler's decision
> +	  making when dealing with multi-core CPU chips at a cost of slightly
> +	  increased overhead in some places. If unsure say N here.
> +
>  config NR_CPUS
>  	int "Maximum number of CPUs (2-512)"
>  	depends on SMP
> -- 
> 2.20.1
> 

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Re: [PATCH] riscv: Kconfig: enable SCHED_MC kconfig

[Palmer Dabbelt]

On Fri, 10 Mar 2023 19:03:36 +0800, Song Shuai wrote:
> RISC-V now builds the sched domain based on the simple possible map.
> 
> Enable SCHED_MC to make the building based on cpu_coregroup_mask()
> which also takes care of the NUMA and cores with LLC.
> 
> 

Applied, thanks!

[1/1] riscv: Kconfig: enable SCHED_MC kconfig
      https://git.kernel.org/palmer/c/8bf7b3b66762

Best regards,
-- 
Palmer Dabbelt <palmer@rivosinc.com>

Re: [PATCH] riscv: Kconfig: enable SCHED_MC kconfig

[patchwork-bot+linux-riscv]

Hello:

This patch was applied to riscv/linux.git (for-next)
by Palmer Dabbelt <palmer@rivosinc.com>:

On Fri, 10 Mar 2023 19:03:36 +0800 you wrote:
> RISC-V now builds the sched domain based on the simple possible map.
> 
> Enable SCHED_MC to make the building based on cpu_coregroup_mask()
> which also takes care of the NUMA and cores with LLC.
> 
> Signed-off-by: Song Shuai <suagrfillet@gmail.com>
> 
> [...]

Here is the summary with links:
  - riscv: Kconfig: enable SCHED_MC kconfig
    https://git.kernel.org/riscv/c/8bf7b3b66762

You are awesome, thank you!
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