From 007d66a0bd43d886eb3e4aceaf1a96b8743ccaff Mon Sep 17 00:00:00 2001 From: Milian Wolff Date: Wed, 5 Aug 2015 16:52:23 -0300 Subject: [PATCH] perf trace: Write to stderr by default 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 Cc: David Ahern Link: http://lkml.kernel.org/n/tip-tqnks6y2cnvm5f9g2dsfr7zl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- 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, }; -- 2.20.1