tools: bpftool: optionally show filenames of pinned objects

Making it optional to show file names of pinned objects because
it scans complete bpf-fs filesystem which is costly.
Added option -f|--bpffs. Documentation updated.

Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 8f94b8ac2e63..f45c44ef9bec 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -382,7 +382,8 @@ static int do_show(int argc, char **argv)
         int err;
         int fd;
 
-        build_pinned_obj_table(&prog_table, BPF_OBJ_PROG);
+        if (show_pinned)
+                build_pinned_obj_table(&prog_table, BPF_OBJ_PROG);
 
         if (argc == 2) {
                 fd = prog_parse_fd(&argc, &argv);