bpf: Fix comment for helper bpf_current_task_under_cgroup()

This should be "current" not "skb".

Fixes: c6b5fb8690fa ("bpf: add documentation for eBPF helpers (42-50)")
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/bpf/20200910203314.70018-1-songliubraving@fb.com

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 90359cab501d172fed44e07f8e7f5bd0ffe1f6e7..7dd314176df76b71553f3d76e9cb3c9cbe03b196 100644 (file)
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -1447,8 +1447,8 @@ union bpf_attr {
  *     Return
  *             The return value depends on the result of the test, and can be:
  *
- *             * 0, if the *skb* task belongs to the cgroup2.
- *             * 1, if the *skb* task does not belong to the cgroup2.
+ *             * 0, if current task belongs to the cgroup2.
+ *             * 1, if current task does not belong to the cgroup2.
  *             * A negative error code, if an error occurred.
  *
  * long bpf_skb_change_tail(struct sk_buff *skb, u32 len, u64 flags)

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 90359cab501d172fed44e07f8e7f5bd0ffe1f6e7..7dd314176df76b71553f3d76e9cb3c9cbe03b196 100644 (file)
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -1447,8 +1447,8 @@ union bpf_attr {
  *     Return
  *             The return value depends on the result of the test, and can be:
  *
- *             * 0, if the *skb* task belongs to the cgroup2.
- *             * 1, if the *skb* task does not belong to the cgroup2.
+ *             * 0, if current task belongs to the cgroup2.
+ *             * 1, if current task does not belong to the cgroup2.
  *             * A negative error code, if an error occurred.
  *
  * long bpf_skb_change_tail(struct sk_buff *skb, u32 len, u64 flags)