From f68df52fbad0928f4686f734827e5fb6b20386ad Mon Sep 17 00:00:00 2001 From: Jianlin Shi Date: Mon, 13 Jul 2026 10:49:01 +0800 Subject: [PATCH] docs: bpf: Document BPF_RB_OVERWRITE_POS in bpf_ringbuf_query BPF_RB_OVERWRITE_POS is supported by bpf_ringbuf_query() but was missing from the helper documentation. Add it to the flags list in both the kernel UAPI header and its tools/ mirror. Signed-off-by: Jianlin Shi Acked-by: Xu Kuohai Link: https://lore.kernel.org/bpf/tencent_22134645443B75ED907D2A85A47AD554A709@qq.com Signed-off-by: Kumar Kartikeya Dwivedi --- include/uapi/linux/bpf.h | 1 + tools/include/uapi/linux/bpf.h | 1 + 2 files changed, 2 insertions(+) diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 005038fbeea4..ffd96e8b920b 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -4735,6 +4735,7 @@ union bpf_attr { * * **BPF_RB_RING_SIZE**: The size of ring buffer. * * **BPF_RB_CONS_POS**: Consumer position (can wrap around). * * **BPF_RB_PROD_POS**: Producer(s) position (can wrap around). + * * **BPF_RB_OVERWRITE_POS**: Overwrite position (can wrap around). * * Data returned is just a momentary snapshot of actual values * and could be inaccurate, so this facility should be used to diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 005038fbeea4..ffd96e8b920b 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -4735,6 +4735,7 @@ union bpf_attr { * * **BPF_RB_RING_SIZE**: The size of ring buffer. * * **BPF_RB_CONS_POS**: Consumer position (can wrap around). * * **BPF_RB_PROD_POS**: Producer(s) position (can wrap around). + * * **BPF_RB_OVERWRITE_POS**: Overwrite position (can wrap around). * * Data returned is just a momentary snapshot of actual values * and could be inaccurate, so this facility should be used to