perf tools: Add group event scheduling option to perf record/stat

Group event scheduling command line option is missing in perf
record/stat.

Add it to perf record/stat, which is same as in perf top.
Reported-by: Andi Kleen <andi@firstfloor.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1313577727.2754.5.camel@hp6530sSigned-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-record.c

@@ -45,7 +45,7 @@ static int			freq				=   1000;
 static int			output;
 static int			pipe_output			=      0;
 static const char		*output_name			= NULL;
-static int			group				=      0;
+static bool			group				=  false;
 static int			realtime_prio			=      0;
 static bool			nodelay				=  false;
 static bool			raw_samples			=  false;
@@ -753,6 +753,8 @@ const struct option record_options[] = {
 		    "child tasks do not inherit counters"),
 	OPT_UINTEGER('F', "freq", &user_freq, "profile at this frequency"),
 	OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"),
+	OPT_BOOLEAN(0, "group", &group,
+		    "put the counters into a counter group"),
 	OPT_BOOLEAN('g', "call-graph", &call_graph,
 		    "do call-graph (stack chain/backtrace) recording"),
 	OPT_INCR('v', "verbose", &verbose,

tools/perf/builtin-stat.c

@@ -193,6 +193,7 @@ static int			big_num_opt			=  -1;
 static const char		*cpu_list;
 static const char		*csv_sep			= NULL;
 static bool			csv_output			= false;
+static bool			group				= false;
 
 static volatile int done = 0;
 
@@ -280,14 +281,14 @@ static int create_perf_stat_counter(struct perf_evsel *evsel)
 	attr->inherit = !no_inherit;
 
 	if (system_wide)
-		return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, false);
+		return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, group);
 
 	if (target_pid == -1 && target_tid == -1) {
 		attr->disabled = 1;
 		attr->enable_on_exec = 1;
 	}
 
-	return perf_evsel__open_per_thread(evsel, evsel_list->threads, false);
+	return perf_evsel__open_per_thread(evsel, evsel_list->threads, group);
 }
 
 /*
@@ -1043,6 +1044,8 @@ static const struct option options[] = {
 		    "stat events on existing thread id"),
 	OPT_BOOLEAN('a', "all-cpus", &system_wide,
 		    "system-wide collection from all CPUs"),
+	OPT_BOOLEAN('g', "group", &group,
+		    "put the counters into a counter group"),
 	OPT_BOOLEAN('c', "scale", &scale,
 		    "scale/normalize counters"),
 	OPT_INCR('v', "verbose", &verbose,