linux-kernel - [PATCH bpf-next v13 4/7] bpf: Copy map value using copy_map_value_long for percpu_cgroup

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Message-ID: <20260107022022.12843-5-leon.hwang@linux.dev>
Date: Wed,  7 Jan 2026 10:20:19 +0800
From: Leon Hwang <leon.hwang@...ux.dev>
To: bpf@...r.kernel.org
Cc: Alexei Starovoitov <ast@...nel.org>,
	Andrii Nakryiko <andrii@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Jiri Olsa <jolsa@...nel.org>,
	Yonghong Song <yonghong.song@...ux.dev>,
	Song Liu <song@...nel.org>,
	Eduard Zingerman <eddyz87@...il.com>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	John Fastabend <john.fastabend@...il.com>,
	KP Singh <kpsingh@...nel.org>,
	Stanislav Fomichev <sdf@...ichev.me>,
	Hao Luo <haoluo@...gle.com>,
	Shuah Khan <shuah@...nel.org>,
	Jason Xing <kerneljasonxing@...il.com>,
	Willem de Bruijn <willemb@...gle.com>,
	Mykyta Yatsenko <yatsenko@...a.com>,
	Tao Chen <chen.dylane@...ux.dev>,
	Kumar Kartikeya Dwivedi <memxor@...il.com>,
	Anton Protopopov <a.s.protopopov@...il.com>,
	Amery Hung <ameryhung@...il.com>,
	Tobias Klauser <tklauser@...tanz.ch>,
	Rong Tao <rongtao@...tc.cn>,
	dxu@...uu.xyz,
	deso@...teo.net,
	Leon Hwang <leon.hwang@...ux.dev>,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	kernel-patches-bot@...com
Subject: [PATCH bpf-next v13 4/7] bpf: Copy map value using copy_map_value_long for percpu_cgroup_storage maps

Copy map value using 'copy_map_value_long()'. It's to keep consistent
style with the way of other percpu maps.

No functional change intended.

Signed-off-by: Leon Hwang <leon.hwang@...ux.dev>
---
 kernel/bpf/local_storage.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/bpf/local_storage.c b/kernel/bpf/local_storage.c
index c93a756e035c..2ab4b60ffe61 100644
--- a/kernel/bpf/local_storage.c
+++ b/kernel/bpf/local_storage.c
@@ -200,8 +200,7 @@ int bpf_percpu_cgroup_storage_copy(struct bpf_map *_map, void *key,
 	 */
 	size = round_up(_map->value_size, 8);
 	for_each_possible_cpu(cpu) {
-		bpf_long_memcpy(value + off,
-				per_cpu_ptr(storage->percpu_buf, cpu), size);
+		copy_map_value_long(_map, value + off, per_cpu_ptr(storage->percpu_buf, cpu));
 		off += size;
 	}
 	rcu_read_unlock();
@@ -234,8 +233,7 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *_map, void *key,
 	 */
 	size = round_up(_map->value_size, 8);
 	for_each_possible_cpu(cpu) {
-		bpf_long_memcpy(per_cpu_ptr(storage->percpu_buf, cpu),
-				value + off, size);
+		copy_map_value_long(_map, per_cpu_ptr(storage->percpu_buf, cpu), value + off);
 		off += size;
 	}
 	rcu_read_unlock();
-- 
2.52.0