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

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Message-ID: <202305061635221161194@zte.com.cn>
Date:   Sat, 6 May 2023 16:35:22 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <linux@...linux.org.uk>
Cc:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] ARM: 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/arm/mm/context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
index 4204ffa2d104..2e95a707eb93 100644
--- a/arch/arm/mm/context.c
+++ b/arch/arm/mm/context.c
@@ -139,7 +139,7 @@ static void flush_context(unsigned int cpu)
 	u64 asid;

 	/* Update the list of reserved ASIDs and the ASID bitmap. */
-	bitmap_clear(asid_map, 0, NUM_USER_ASIDS);
+	bitmap_zero(asid_map, NUM_USER_ASIDS);
 	for_each_possible_cpu(i) {
 		asid = atomic64_xchg(&per_cpu(active_asids, i), 0);
 		/*
-- 
2.25.1