From: Milian Wolff Date: Wed, 5 Aug 2015 19:52:23 +0000 (-0300) Subject: perf trace: Write to stderr by default X-Git-Tag: v4.3-rc1~138^2~15^2~1 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=007d66a0bd43d886eb3e4aceaf1a96b8743ccaff;p=linux.git 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 --- 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, };