| Message ID | 1648870645-1046-1-git-send-email-chensong_2000@189.cn (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | BPF |
| Headers | show |
| Series | sample: bpf: syscall_tp_user: print result of verify_map | expand |
| Context | Check | Description |
|---|---|---|
| bpf/vmtest-bpf-next-PR | success | PR summary |
| netdev/tree_selection | success | Not a local patch |
diff --git a/samples/bpf/syscall_tp_user.c b/samples/bpf/syscall_tp_user.c index a0ebf1833ed3..c55383068384 100644 --- a/samples/bpf/syscall_tp_user.c +++ b/samples/bpf/syscall_tp_user.c @@ -36,6 +36,9 @@ static void verify_map(int map_id) fprintf(stderr, "failed: map #%d returns value 0\n", map_id); return; } + + printf("verify map:%d val: %d\n", map_id, val); + val = 0; if (bpf_map_update_elem(map_id, &key, &val, BPF_ANY) != 0) { fprintf(stderr, "map_update failed: %s\n", strerror(errno));
At the end of the test, we already print out prog <prog number>: map ids <...> <...> Value is the number read from kernel through bpf map, further print out verify map:<map id> val:<...> will help users to understand the program runs successfully. Signed-off-by: Song Chen <chensong_2000@189.cn> --- samples/bpf/syscall_tp_user.c | 3 +++ 1 file changed, 3 insertions(+)