linux-kernel - [PATCH] tools/virtio: Use the __GFP_ZERO flag of kmalloc to complete the memory initialization.

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Message-Id: <20240605135245.14921-1-cuitao@kylinos.cn>
Date: Wed,  5 Jun 2024 21:52:45 +0800
From: cuitao <cuitao@...inos.cn>
To: mst@...hat.com,
	jasowang@...hat.com,
	virtualization@...ts.linux.dev
Cc: xuanzhuo@...ux.alibaba.com,
	eperezma@...hat.com,
	linux-kernel@...r.kernel.org,
	cuitao <cuitao@...inos.cn>
Subject: [PATCH] tools/virtio: Use the __GFP_ZERO flag of kmalloc to complete the memory initialization.

Use the __GFP_ZERO flag of kmalloc to initialize memory while allocating it,
without the need for an additional memset call.

Signed-off-by: cuitao <cuitao@...inos.cn>
---
 tools/virtio/linux/kernel.h | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 6702008f7f5c..9e401fb7c215 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -66,10 +66,7 @@ static inline void *kmalloc_array(unsigned n, size_t s, gfp_t gfp)
 
 static inline void *kzalloc(size_t s, gfp_t gfp)
 {
-	void *p = kmalloc(s, gfp);
-
-	memset(p, 0, s);
-	return p;
+	return kmalloc(s, gfp | __GFP_ZERO);
 }
 
 static inline void *alloc_pages_exact(size_t s, gfp_t gfp)
-- 
2.25.1