2020-06-05 05:19:50

by Chenxi Mao

Subject: [PATCH v2 1/1] riscv: Select ARCH_SUPPORTS_ATOMIC_RMW by default

Select ARCH_SUPPORTS_ATOMIC_RMW by default to enabel osqlocks.

PS2: Add signed off info.

Signed-off-by: Chenxi Mao <[email protected]>
---
arch/riscv/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index a31e1a41913a..cbdc605d20d9 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -68,6 +68,7 @@ config RISCV
select ARCH_HAS_GCOV_PROFILE_ALL
select HAVE_COPY_THREAD_TLS
select HAVE_ARCH_KASAN if MMU && 64BIT
+ select ARCH_SUPPORTS_ATOMIC_RMW

config ARCH_MMAP_RND_BITS_MIN
default 18 if 64BIT
--
2.25.1

2020-06-05 09:08:04

by Anup Patel

Subject: Re: [PATCH v2 1/1] riscv: Select ARCH_SUPPORTS_ATOMIC_RMW by default

On Fri, Jun 5, 2020 at 10:45 AM Chenxi Mao <[email protected]> wrote:
>
> Select ARCH_SUPPORTS_ATOMIC_RMW by default to enabel osqlocks.
>
> PS2: Add signed off info.
>
> Signed-off-by: Chenxi Mao <[email protected]>
> ---
> arch/riscv/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index a31e1a41913a..cbdc605d20d9 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -68,6 +68,7 @@ config RISCV
> select ARCH_HAS_GCOV_PROFILE_ALL
> select HAVE_COPY_THREAD_TLS
> select HAVE_ARCH_KASAN if MMU && 64BIT
> + select ARCH_SUPPORTS_ATOMIC_RMW
>
> config ARCH_MMAP_RND_BITS_MIN
> default 18 if 64BIT
> --
> 2.25.1
>
>

Looks good to me.

Reviewed-by: Anup Patel <[email protected]>

This is a good candidate for Linux-5.8. Palmer ??

Regards,
Anup

2020-06-18 22:50:20

by Palmer Dabbelt

Subject: Re: [PATCH v2 1/1] riscv: Select ARCH_SUPPORTS_ATOMIC_RMW by default

On Thu, 04 Jun 2020 22:15:10 PDT (-0700), [email protected] wrote:
> Select ARCH_SUPPORTS_ATOMIC_RMW by default to enabel osqlocks.
>
> PS2: Add signed off info.
>
> Signed-off-by: Chenxi Mao <[email protected]>
> ---
> arch/riscv/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index a31e1a41913a..cbdc605d20d9 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -68,6 +68,7 @@ config RISCV
> select ARCH_HAS_GCOV_PROFILE_ALL
> select HAVE_COPY_THREAD_TLS
> select HAVE_ARCH_KASAN if MMU && 64BIT
> + select ARCH_SUPPORTS_ATOMIC_RMW
>
> config ARCH_MMAP_RND_BITS_MIN
> default 18 if 64BIT

Thanks, this is on for-next.