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* [PATCH] Documentation/admin-guide: kernel-parameters: correct the architectures for numa_balancing
@ 2021-03-02  8:41 Barry Song
  2021-03-04  2:26 ` Palmer Dabbelt
  2021-03-09  0:19 ` Jonathan Corbet
  0 siblings, 2 replies; 3+ messages in thread
From: Barry Song @ 2021-03-02  8:41 UTC (permalink / raw)
  To: corbet, linux-doc
  Cc: linux-kernel, linux-riscv, Barry Song, Mel Gorman, Paul Walmsley,
	Palmer Dabbelt, Albert Ou, Paul E. McKenney, Randy Dunlap,
	Andrew Morton, Thomas Gleixner, Mauro Carvalho Chehab,
	Viresh Kumar, Mike Kravetz, Peter Zijlstra

X86 isn't the only architecture supporting NUMA_BALANCING. ARM64, PPC,
S390 and RISCV also support it:

arch$ git grep NUMA_BALANCING
arm64/Kconfig:  select ARCH_SUPPORTS_NUMA_BALANCING
arm64/configs/defconfig:CONFIG_NUMA_BALANCING=y
arm64/include/asm/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
powerpc/configs/powernv_defconfig:CONFIG_NUMA_BALANCING=y
powerpc/configs/ppc64_defconfig:CONFIG_NUMA_BALANCING=y
powerpc/configs/pseries_defconfig:CONFIG_NUMA_BALANCING=y
powerpc/include/asm/book3s/64/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
powerpc/include/asm/book3s/64/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
powerpc/include/asm/book3s/64/pgtable.h:#endif /* CONFIG_NUMA_BALANCING */
powerpc/include/asm/book3s/64/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
powerpc/include/asm/book3s/64/pgtable.h:#endif /* CONFIG_NUMA_BALANCING */
powerpc/include/asm/nohash/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
powerpc/include/asm/nohash/pgtable.h:#endif /* CONFIG_NUMA_BALANCING */
powerpc/platforms/Kconfig.cputype:      select ARCH_SUPPORTS_NUMA_BALANCING
riscv/Kconfig:  select ARCH_SUPPORTS_NUMA_BALANCING
riscv/include/asm/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
s390/Kconfig:   select ARCH_SUPPORTS_NUMA_BALANCING
s390/configs/debug_defconfig:CONFIG_NUMA_BALANCING=y
s390/configs/defconfig:CONFIG_NUMA_BALANCING=y
s390/include/asm/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
x86/Kconfig:    select ARCH_SUPPORTS_NUMA_BALANCING     if X86_64
x86/include/asm/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
x86/include/asm/pgtable.h:#endif /* CONFIG_NUMA_BALANCING */

On the other hand, setup_numabalancing() is implemented in mm/mempolicy.c
which doesn't depend on architectures.

Cc: Mel Gorman <mgorman@suse.de>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
---
 Documentation/admin-guide/kernel-parameters.rst | 1 +
 Documentation/admin-guide/kernel-parameters.txt | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/admin-guide/kernel-parameters.rst b/Documentation/admin-guide/kernel-parameters.rst
index 1132796a8d96..24302cad174a 100644
--- a/Documentation/admin-guide/kernel-parameters.rst
+++ b/Documentation/admin-guide/kernel-parameters.rst
@@ -140,6 +140,7 @@ parameter is applicable::
 	PPT	Parallel port support is enabled.
 	PS2	Appropriate PS/2 support is enabled.
 	RAM	RAM disk support is enabled.
+	RISCV	RISCV architecture is enabled.
 	RDT	Intel Resource Director Technology.
 	S390	S390 architecture is enabled.
 	SCSI	Appropriate SCSI support is enabled.
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 04545725f187..371a02ae1e21 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3472,7 +3472,8 @@
 
 	nr_uarts=	[SERIAL] maximum number of UARTs to be registered.
 
-	numa_balancing=	[KNL,X86] Enable or disable automatic NUMA balancing.
+	numa_balancing=	[KNL,ARM64,PPC,RISCV,S390,X86] Enable or disable automatic
+			NUMA balancing.
 			Allowed values are enable and disable
 
 	numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA.
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread
* Re: [PATCH] Documentation/admin-guide: kernel-parameters: correct the architectures for numa_balancing
  2021-03-02  8:41 [PATCH] Documentation/admin-guide: kernel-parameters: correct the architectures for numa_balancing Barry Song
@ 2021-03-04  2:26 ` Palmer Dabbelt
  2021-03-09  0:19 ` Jonathan Corbet
  1 sibling, 0 replies; 3+ messages in thread
From: Palmer Dabbelt @ 2021-03-04  2:26 UTC (permalink / raw)
  To: song.bao.hua
  Cc: corbet, linux-doc, linux-kernel, linux-riscv, song.bao.hua,
	mgorman, Paul Walmsley, aou, paulmck, rdunlap, akpm, tglx,
	mchehab+huawei, viresh.kumar, mike.kravetz, peterz

On Tue, 02 Mar 2021 00:41:59 PST (-0800), song.bao.hua@hisilicon.com wrote:
> X86 isn't the only architecture supporting NUMA_BALANCING. ARM64, PPC,
> S390 and RISCV also support it:
>
> arch$ git grep NUMA_BALANCING
> arm64/Kconfig:  select ARCH_SUPPORTS_NUMA_BALANCING
> arm64/configs/defconfig:CONFIG_NUMA_BALANCING=y
> arm64/include/asm/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
> powerpc/configs/powernv_defconfig:CONFIG_NUMA_BALANCING=y
> powerpc/configs/ppc64_defconfig:CONFIG_NUMA_BALANCING=y
> powerpc/configs/pseries_defconfig:CONFIG_NUMA_BALANCING=y
> powerpc/include/asm/book3s/64/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
> powerpc/include/asm/book3s/64/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
> powerpc/include/asm/book3s/64/pgtable.h:#endif /* CONFIG_NUMA_BALANCING */
> powerpc/include/asm/book3s/64/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
> powerpc/include/asm/book3s/64/pgtable.h:#endif /* CONFIG_NUMA_BALANCING */
> powerpc/include/asm/nohash/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
> powerpc/include/asm/nohash/pgtable.h:#endif /* CONFIG_NUMA_BALANCING */
> powerpc/platforms/Kconfig.cputype:      select ARCH_SUPPORTS_NUMA_BALANCING
> riscv/Kconfig:  select ARCH_SUPPORTS_NUMA_BALANCING
> riscv/include/asm/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
> s390/Kconfig:   select ARCH_SUPPORTS_NUMA_BALANCING
> s390/configs/debug_defconfig:CONFIG_NUMA_BALANCING=y
> s390/configs/defconfig:CONFIG_NUMA_BALANCING=y
> s390/include/asm/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
> x86/Kconfig:    select ARCH_SUPPORTS_NUMA_BALANCING     if X86_64
> x86/include/asm/pgtable.h:#ifdef CONFIG_NUMA_BALANCING
> x86/include/asm/pgtable.h:#endif /* CONFIG_NUMA_BALANCING */
>
> On the other hand, setup_numabalancing() is implemented in mm/mempolicy.c
> which doesn't depend on architectures.
>
> Cc: Mel Gorman <mgorman@suse.de>
> Cc: Paul Walmsley <paul.walmsley@sifive.com>
> Cc: Palmer Dabbelt <palmer@dabbelt.com>
> Cc: Albert Ou <aou@eecs.berkeley.edu>
> Cc: "Paul E. McKenney" <paulmck@kernel.org>
> Cc: Randy Dunlap <rdunlap@infradead.org>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> Cc: Viresh Kumar <viresh.kumar@linaro.org>
> Cc: Mike Kravetz <mike.kravetz@oracle.com>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
> ---
>  Documentation/admin-guide/kernel-parameters.rst | 1 +
>  Documentation/admin-guide/kernel-parameters.txt | 3 ++-
>  2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/admin-guide/kernel-parameters.rst b/Documentation/admin-guide/kernel-parameters.rst
> index 1132796a8d96..24302cad174a 100644
> --- a/Documentation/admin-guide/kernel-parameters.rst
> +++ b/Documentation/admin-guide/kernel-parameters.rst
> @@ -140,6 +140,7 @@ parameter is applicable::
>  	PPT	Parallel port support is enabled.
>  	PS2	Appropriate PS/2 support is enabled.
>  	RAM	RAM disk support is enabled.
> +	RISCV	RISCV architecture is enabled.
>  	RDT	Intel Resource Director Technology.
>  	S390	S390 architecture is enabled.
>  	SCSI	Appropriate SCSI support is enabled.
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index 04545725f187..371a02ae1e21 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -3472,7 +3472,8 @@
>
>  	nr_uarts=	[SERIAL] maximum number of UARTs to be registered.
>
> -	numa_balancing=	[KNL,X86] Enable or disable automatic NUMA balancing.
> +	numa_balancing=	[KNL,ARM64,PPC,RISCV,S390,X86] Enable or disable automatic
> +			NUMA balancing.
>  			Allowed values are enable and disable
>
>  	numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA.

Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>

^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: [PATCH] Documentation/admin-guide: kernel-parameters: correct the architectures for numa_balancing
  2021-03-02  8:41 [PATCH] Documentation/admin-guide: kernel-parameters: correct the architectures for numa_balancing Barry Song
  2021-03-04  2:26 ` Palmer Dabbelt
@ 2021-03-09  0:19 ` Jonathan Corbet
  1 sibling, 0 replies; 3+ messages in thread
From: Jonathan Corbet @ 2021-03-09  0:19 UTC (permalink / raw)
  To: Barry Song, linux-doc
  Cc: linux-kernel, linux-riscv, Barry Song, Mel Gorman, Paul Walmsley,
	Palmer Dabbelt, Albert Ou, Paul E. McKenney, Randy Dunlap,
	Andrew Morton, Thomas Gleixner, Mauro Carvalho Chehab,
	Viresh Kumar, Mike Kravetz, Peter Zijlstra

Barry Song <song.bao.hua@hisilicon.com> writes:

> X86 isn't the only architecture supporting NUMA_BALANCING. ARM64, PPC,
> S390 and RISCV also support it:

Applied, thanks.

jon

^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-03-09  0:20 UTC | newest]

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2021-03-02  8:41 [PATCH] Documentation/admin-guide: kernel-parameters: correct the architectures for numa_balancing Barry Song
2021-03-04  2:26 ` Palmer Dabbelt
2021-03-09  0:19 ` Jonathan Corbet

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