linux-kernel - [PATCH] riscv: mm: use bitmap

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Date:   Sat, 6 May 2023 17:11:41 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <paul.walmsley@...ive.com>
Cc:     <palmer@...belt.com>, <aou@...s.berkeley.edu>, <guoren@...nel.org>,
        <sergey.matyukevich@...tacore.com>, <dylan@...estech.com>,
        <ajones@...tanamicro.com>, <linux-riscv@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] riscv: mm: use bitmap_zero() API

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

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

Signed-off-by: Ye Xingchen <ye.xingchen@....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