diff mbox series

bpf: Call kfree(obj) only once in free_one()

Message ID 08987123-668c-40f3-a8ee-c3038d94f069@web.de (mailing list archive)
State Accepted
Commit b295d70db5e1b726b8a723c9ae0b3530806a6b9d
Delegated to: BPF
Headers show
Series bpf: Call kfree(obj) only once in free_one() | expand

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Commit Message

Markus Elfring Sept. 26, 2024, 11:45 a.m. UTC 
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 26 Sep 2024 13:30:42 +0200

A kfree() call is always used at the end of this function implementation.
Thus specify such a function call only once instead of duplicating it
in a previous if branch.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 kernel/bpf/memalloc.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

--
2.46.1

Comments

Eduard Zingerman Sept. 26, 2024, 11:21 p.m. UTC | #1 
On Thu, 2024-09-26 at 13:45 +0200, Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Thu, 26 Sep 2024 13:30:42 +0200
> 
> A kfree() call is always used at the end of this function implementation.
> Thus specify such a function call only once instead of duplicating it
> in a previous if branch.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---

Acked-by: Eduard Zingerman <eddyz87@gmail.com>

[...]
patchwork-bot+netdevbpf@kernel.org Sept. 27, 2024, 8:40 p.m. UTC | #2 
Hello:

This patch was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@kernel.org>:

On Thu, 26 Sep 2024 13:45:18 +0200 you wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Thu, 26 Sep 2024 13:30:42 +0200
> 
> A kfree() call is always used at the end of this function implementation.
> Thus specify such a function call only once instead of duplicating it
> in a previous if branch.
> 
> [...]

Here is the summary with links:
  - bpf: Call kfree(obj) only once in free_one()
    https://git.kernel.org/bpf/bpf-next/c/b295d70db5e1

You are awesome, thank you!
diff mbox series

Patch

diff --git a/kernel/bpf/memalloc.c b/kernel/bpf/memalloc.c
index b3858a76e0b3..1a1b4458114c 100644
--- a/kernel/bpf/memalloc.c
+++ b/kernel/bpf/memalloc.c
@@ -252,11 +252,8 @@  static void alloc_bulk(struct bpf_mem_cache *c, int cnt, int node, bool atomic)

 static void free_one(void *obj, bool percpu)
 {
-	if (percpu) {
+	if (percpu)
 		free_percpu(((void __percpu **)obj)[1]);
-		kfree(obj);
-		return;
-	}

 	kfree(obj);
 }