[PATCH bpf-next v2] bpf: Replace get_next_cpu() with cpumask_next_wrap()

[PATCH bpf-next v2] bpf: Replace get_next_cpu() with cpumask_next_wrap()

[Fushuai Wang]

The get_next_cpu() function was only used in one place to find
the next possible CPU, which can be replaced by cpumask_next_wrap().

Signed-off-by: Fushuai Wang <wangfushuai@baidu.com>
---
 kernel/bpf/bpf_lru_list.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/kernel/bpf/bpf_lru_list.c b/kernel/bpf/bpf_lru_list.c
index 2d6e1c98d8ad..e7a2fc60523f 100644
--- a/kernel/bpf/bpf_lru_list.c
+++ b/kernel/bpf/bpf_lru_list.c
@@ -19,14 +19,6 @@
 #define LOCAL_PENDING_LIST_IDX	LOCAL_LIST_IDX(BPF_LRU_LOCAL_LIST_T_PENDING)
 #define IS_LOCAL_LIST_TYPE(t)	((t) >= BPF_LOCAL_LIST_T_OFFSET)
 
-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;
-}
-
 /* Local list helpers */
 static struct list_head *local_free_list(struct bpf_lru_locallist *loc_l)
 {
@@ -482,7 +474,7 @@ static struct bpf_lru_node *bpf_common_lru_pop_free(struct bpf_lru *lru,
 
 		raw_spin_unlock_irqrestore(&steal_loc_l->lock, flags);
 
-		steal = get_next_cpu(steal);
+		steal = cpumask_next_wrap(steal, cpu_possible_mask);
 	} while (!node && steal != first_steal);
 
 	loc_l->next_steal = steal;
-- 
2.36.1

Re: [PATCH bpf-next v2] bpf: Replace get_next_cpu() with cpumask_next_wrap()

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:

On Mon, 18 Aug 2025 11:23:44 +0800 you wrote:
> The get_next_cpu() function was only used in one place to find
> the next possible CPU, which can be replaced by cpumask_next_wrap().
> 
> Signed-off-by: Fushuai Wang <wangfushuai@baidu.com>
> ---
>  kernel/bpf/bpf_lru_list.c | 10 +---------
>  1 file changed, 1 insertion(+), 9 deletions(-)

Here is the summary with links:
  - [bpf-next,v2] bpf: Replace get_next_cpu() with cpumask_next_wrap()
    https://git.kernel.org/bpf/bpf-next/c/d87fdb1f27d7

You are awesome, thank you!
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