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| author | Paul Chaignon <paul@isovalent.com> | 2021-12-21 00:45:28 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 13:03:45 +0300 |
| commit | 77c5e99644af10d94c6ce32d580d72b81267c933 (patch) | |
| tree | f263ab22e50cc6cf41cb83c6525ce2c8d480dc67 /tools/bpf | |
| parent | 79d6a406df007a7dcd2fba828e7b28c9d880c34a (diff) | |
| download | linux-77c5e99644af10d94c6ce32d580d72b81267c933.tar.xz | |
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/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 02eaaf065f65..d27ec4f852bb 100644 --- a/tools/bpf/bpftool/main.c +++ b/tools/bpf/bpftool/main.c @@ -402,6 +402,8 @@ int main(int argc, char **argv) }; int opt, ret; + setlinebuf(stdout); + last_do_help = do_help; pretty_output = false; json_output = false; |