netdev - [PATCH bpf-next 2/3] tools: bpftool: print nb of cmds to stdout (not stderr) for batch mode

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Message-Id: <1540072910-29732-3-git-send-email-quentin.monnet@netronome.com>
Date:   Sat, 20 Oct 2018 23:01:49 +0100
From:   Quentin Monnet <quentin.monnet@...ronome.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Cc:     netdev@...r.kernel.org, oss-drivers@...ronome.com,
        Quentin Monnet <quentin.monnet@...ronome.com>
Subject: [PATCH bpf-next 2/3] tools: bpftool: print nb of cmds to stdout (not stderr) for batch mode

When batch mode is used and all commands succeeds, bpftool prints the
number of commands processed to stderr. There is no particular reason to
use stderr for this, we could as well use stdout. It would avoid getting
unnecessary output on stderr if the standard ouptut is redirected, for
example.

Reported-by: David Beckett <david.beckett@...ronome.com>
Signed-off-by: Quentin Monnet <quentin.monnet@...ronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
 tools/bpf/bpftool/main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c
index 828dde30e9ec..75a3296dc0bc 100644
--- a/tools/bpf/bpftool/main.c
+++ b/tools/bpf/bpftool/main.c
@@ -321,7 +321,8 @@ static int do_batch(int argc, char **argv)
 		p_err("reading batch file failed: %s", strerror(errno));
 		err = -1;
 	} else {
-		p_info("processed %d commands", lines);
+		if (!json_output)
+			printf("processed %d commands\n", lines);
 		err = 0;
 	}
 err_close:
-- 
2.7.4