perf trace: Implement -o/--output filename

To output all 'trace' output to a filename, just like 'strace -ofile'

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-6q1homkwoayhmoq64y5vhel6@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent e3e1a54f
...@@ -30,6 +30,10 @@ OPTIONS ...@@ -30,6 +30,10 @@ OPTIONS
--expr:: --expr::
List of events to show, currently only syscall names. List of events to show, currently only syscall names.
-o::
--output=::
Output file name.
-p:: -p::
--pid=:: --pid=::
Record events on existing process ID (comma separated list). Record events on existing process ID (comma separated list).
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