perf mem: Add -U/-K (--all-user/--all-kernel) options

Add -U/-K (--all-user/--all-kernel) options to use the perf record
--all-user/--all-kernel options.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1458823940-24583-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/Documentation/perf-mem.txt

@@ -48,6 +48,14 @@ OPTIONS
 	option can be passed in record mode. It will be interpreted the same way as perf
 	record.
 
+-K::
+--all-kernel::
+	Configure all used events to run in kernel space.
+
+-U::
+--all-user::
+	Configure all used events to run in user space.
+
 SEE ALSO
 --------
 linkperf:perf-record[1], linkperf:perf-report[1]