[PATCH] riscv: mm: use bitmap_zero() API

[PATCH] riscv: mm: use bitmap_zero() API

[ye.xingchen]

From: Ye Xingchen <ye.xingchen@zte.com.cn>

bitmap_zero() is faster than bitmap_clear(), so use bitmap_zero()
instead of bitmap_clear().

Signed-off-by: Ye Xingchen <ye.xingchen@zte.com.cn>
---
 arch/riscv/mm/context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/mm/context.c b/arch/riscv/mm/context.c
index 12e22e7330e7..217fd4de6134 100644
--- a/arch/riscv/mm/context.c
+++ b/arch/riscv/mm/context.c
@@ -67,7 +67,7 @@ static void __flush_context(void)
 	lockdep_assert_held(&context_lock);

 	/* Update the list of reserved ASIDs and the ASID bitmap. */
-	bitmap_clear(context_asid_map, 0, num_asids);
+	bitmap_zero(context_asid_map, num_asids);

 	/* Mark already active ASIDs as used */
 	for_each_possible_cpu(i) {
-- 
2.25.1

Re: [PATCH] riscv: mm: use bitmap_zero() API

[Anup Patel]

On Sat, May 6, 2023 at 2:42 PM <ye.xingchen@zte.com.cn> wrote:
>
> From: Ye Xingchen <ye.xingchen@zte.com.cn>
>
> bitmap_zero() is faster than bitmap_clear(), so use bitmap_zero()
> instead of bitmap_clear().
>
> Signed-off-by: Ye Xingchen <ye.xingchen@zte.com.cn>

Looks good to me.

Reviewed-by: Anup Patel <anup@brainfault.org>

Regards,
Anup

> ---
>  arch/riscv/mm/context.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/riscv/mm/context.c b/arch/riscv/mm/context.c
> index 12e22e7330e7..217fd4de6134 100644
> --- a/arch/riscv/mm/context.c
> +++ b/arch/riscv/mm/context.c
> @@ -67,7 +67,7 @@ static void __flush_context(void)
>         lockdep_assert_held(&context_lock);
>
>         /* Update the list of reserved ASIDs and the ASID bitmap. */
> -       bitmap_clear(context_asid_map, 0, num_asids);
> +       bitmap_zero(context_asid_map, num_asids);
>
>         /* Mark already active ASIDs as used */
>         for_each_possible_cpu(i) {
> --
> 2.25.1

Re: [PATCH] riscv: mm: use bitmap_zero() API

[patchwork-bot+linux-riscv]

Hello:

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

On Sat, 6 May 2023 17:11:41 +0800 (CST) you wrote:
> From: Ye Xingchen <ye.xingchen@zte.com.cn>
> 
> bitmap_zero() is faster than bitmap_clear(), so use bitmap_zero()
> instead of bitmap_clear().
> 
> Signed-off-by: Ye Xingchen <ye.xingchen@zte.com.cn>
> 
> [...]

Here is the summary with links:
  - riscv: mm: use bitmap_zero() API
    https://git.kernel.org/riscv/c/88ba8c83bead

You are awesome, thank you!
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