[RFC PATCH bpf-next v2 2/3] tools/bpf: sync bpf uapi header bpf.h

[Yonghong Song]

sync bpf uapi header bpf.h to tools directory.

Signed-off-by: Yonghong Song <y...@fb.com>
---
 tools/include/uapi/linux/bpf.h | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 72336bac7573..e3e824848335 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -2667,6 +2667,18 @@ union bpf_attr {
  *             0 on success.
  *
  *             **-ENOENT** if the bpf-local-storage cannot be found.
+ *
+ * int bpf_send_signal(u32 pid, u32 sig)
+ *     Description
+ *             Send signal *sig* to *pid*.
+ *     Return
+ *             0 on success or successfully queued.
+ *
+ *             **-ENOENT** if *pid* cannot be found.
+ *
+ *             **-EBUSY** if work queue under nmi is full.
+ *
+ *             Other negative values for actual signal sending errors.
  */
 #define __BPF_FUNC_MAPPER(FN)          \
        FN(unspec),                     \
@@ -2777,7 +2789,8 @@ union bpf_attr {
        FN(strtol),                     \
        FN(strtoul),                    \
        FN(sk_storage_get),             \
-       FN(sk_storage_delete),
+       FN(sk_storage_delete),          \
+       FN(send_signal),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call
-- 
2.17.1