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| author | Paul Chaignon <paul@isovalent.com> | 2021-12-20 22:45:28 +0100 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2021-12-21 15:44:51 -0800 |
| commit | 1a1a0b0364ad291bd8e509da104ac8b5b1afec5d (patch) | |
| tree | 2a33bb0a3dcba47642b729a064c56134c2035053 /tools/bpf | |
| parent | 0dd668d2080c46cf914e131f341fa114a34c5a20 (diff) | |
| download | linux-1a1a0b0364ad291bd8e509da104ac8b5b1afec5d.tar.bz2 | |
bpftool: Enable line buffering for stdout
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
Diffstat (limited to 'tools/bpf')
| -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 8b71500e7cb2..020e91a542d5 100644 --- a/tools/bpf/bpftool/main.c +++ b/tools/bpf/bpftool/main.c @@ -408,6 +408,8 @@ int main(int argc, char **argv) bool version_requested = false; int opt, ret; + setlinebuf(stdout); + last_do_help = do_help; pretty_output = false; json_output = false; |