From: Milian Wolff <milian.wo...@kdab.com>

Without this patch, it is cumbersome to read the trace output but
ignoring the normal, potentially verbose, output of the debuggee.  One
common example is doing something like the following:

 perf trace -s find /tmp > /dev/null

Without this patch, the trace summary will be lost. Now, it will still
be printed at the end. This behavior is also applied by strace.

Cc: Milian Wolff <milian.wo...@kdab.com>
Cc: David Ahern <dsah...@gmail.com>
Link: http://lkml.kernel.org/n/tip-tqnks6y2cnvm5f9g2dsfr...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
 tools/perf/builtin-trace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 98d423efdaa9..a47497011c93 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2965,7 +2965,7 @@ int cmd_trace(int argc, const char **argv, const char 
*prefix __maybe_unused)
                        .mmap_pages    = UINT_MAX,
                        .proc_map_timeout  = 500,
                },
-               .output = stdout,
+               .output = stderr,
                .show_comm = true,
                .trace_syscalls = true,
        };
-- 
2.1.0

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