diff options
| author | Paul Chaignon <paul@isovalent.com> | 2021-12-20 22:45:28 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 09:19:35 +0100 |
| commit | a259c73dddb3dc4ca8be8e6e8d94a78a297efe8d (patch) | |
| tree | 5c72215dc827fa14a35b308862219eec488c9294 /tools | |
| parent | eb599bf3bae51097f906da40488997a8eeb77f78 (diff) | |
bpftool: Enable line buffering for stdout
[ Upstream commit 1a1a0b0364ad291bd8e509da104ac8b5b1afec5d ]
The output of bpftool prog tracelog is currently buffered, which is
inconvenient when piping the output into other commands. A simple
tracelog | grep will typically not display anything. This patch fixes it
by enabling line buffering on stdout for the whole bpftool binary.
Fixes: 30da46b5dc3a ("tools: bpftool: add a command to dump the trace pipe")
Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Paul Chaignon <paul@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211220214528.GA11706@Mem
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/bpf/bpftool/main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c index 7d3cfb0ccbe6..4b03983acbef 100644 --- a/tools/bpf/bpftool/main.c +++ b/tools/bpf/bpftool/main.c @@ -362,6 +362,8 @@ int main(int argc, char **argv) }; int opt, ret; + setlinebuf(stdout); + last_do_help = do_help; pretty_output = false; json_output = false; |