perf trace: Write to stderr by default
authorMilian Wolff <milian.wolff@kdab.com>
Wed, 5 Aug 2015 19:52:23 +0000 (16:52 -0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 5 Aug 2015 19:52:23 +0000 (16:52 -0300)
commit007d66a0bd43d886eb3e4aceaf1a96b8743ccaff
tree194ff851ad18491536b2d4f619bec8735ce5970a
parentb7a001d2067830a98e65d1bbbf99a6d435d70616
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 <milian.wolff@kdab.com>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/n/tip-tqnks6y2cnvm5f9g2dsfr7zl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/builtin-trace.c