linux-kernel - [PATCH bpf] bpf: Use cpumask_next_wrap() in get_next

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Message-ID: <20250807024800.39491-1-wangfushuai@baidu.com>
Date: Thu, 7 Aug 2025 10:48:00 +0800
From: Fushuai Wang <wangfushuai@...du.com>
To: <linux-kernel@...r.kernel.org>, <bpf@...r.kernel.org>
CC: <martin.lau@...ux.dev>, <ast@...nel.org>, <daniel@...earbox.net>,
	<andrii@...nel.org>, <eddyz87@...il.com>, <song@...nel.org>,
	<yonghong.song@...ux.dev>, <john.fastabend@...il.com>, <kpsingh@...nel.org>,
	<sdf@...ichev.me>, <haoluo@...gle.com>, <jolsa@...nel.org>, Fushuai Wang
	<wangfushuai@...du.com>
Subject: [PATCH bpf] bpf: Use cpumask_next_wrap() in get_next_cpu()

Replace the manual sequence of cpumask_next() and cpumask_first()
with a single call to cpumask_next_wrap() in get_next_cpu().

Signed-off-by: Fushuai Wang <wangfushuai@...du.com>
---
 kernel/bpf/bpf_lru_list.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/kernel/bpf/bpf_lru_list.c b/kernel/bpf/bpf_lru_list.c
index 2d6e1c98d8ad..34881f4da8ae 100644
--- a/kernel/bpf/bpf_lru_list.c
+++ b/kernel/bpf/bpf_lru_list.c
@@ -21,10 +21,7 @@
 
 static int get_next_cpu(int cpu)
 {
-	cpu = cpumask_next(cpu, cpu_possible_mask);
-	if (cpu >= nr_cpu_ids)
-		cpu = cpumask_first(cpu_possible_mask);
-	return cpu;
+	return cpumask_next_wrap(cpu, cpu_possible_mask);
 }
 
 /* Local list helpers */
-- 
2.36.1