perf report: Introduce --socket-filter option

Introduce --socket-filter option for 'perf report' to only show entries
for a processor socket that match this filter.

  $ perf report --socket-filter 1 --stdio
  # To display the perf.data header info, please use --header/--header-only options.
  #
  # Total Lost Samples: 0
  #
  # Samples: 752  of event 'cycles'
  # Event count (approx.): 350995599
  # Processor Socket: 1
  #
  # Overhead  Command    Shared Object     Symbol
  # ........  .........  ................  .................................
  #
      97.02%  test       test              [.] plusB_c
       0.97%  test       test              [.] plusA_c
       0.23%  swapper    [kernel.vmlinux]  [k] acpi_idle_do_entry
       0.09%  rcu_sched  [kernel.vmlinux]  [k] dyntick_save_progress_counter
       0.01%  swapper    [kernel.vmlinux]  [k] task_waking_fair
       0.00%  swapper    [kernel.vmlinux]  [k] run_timer_softirq

Signed-off-by: Kan Liang <kan.liang@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1441377946-44429-3-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/Documentation/perf-report.txt

@@ -350,6 +350,9 @@ include::itrace.txt[]
 	This option extends the perf report to show reference callgraphs,
 	which collected by reference event, in no callgraph event.
 
+--socket-filter::
+	Only report the samples on the processor socket that match with this filter
+
 include::callchain-overhead-calculation.txt[]
 
 SEE ALSO

tools/perf/builtin-report.c

@@ -62,6 +62,7 @@ struct report {
 	float			min_percent;
 	u64			nr_entries;
 	u64			queue_size;
+	int			socket_filter;
 	DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 };
 
@@ -286,6 +287,7 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
 	struct perf_evsel *evsel = hists_to_evsel(hists);
 	char buf[512];
 	size_t size = sizeof(buf);
+	int socket = hists->socket_filter;
 
 	if (symbol_conf.filter_relative) {
 		nr_samples = hists->stats.nr_non_filtered_samples;
@@ -326,6 +328,10 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
 		ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
 	} else
 		ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
+
+	if (socket > -1)
+		ret += fprintf(fp, "\n# Processor Socket: %d", socket);
+
 	return ret + fprintf(fp, "\n#\n");
 }
 
@@ -450,6 +456,8 @@ static void report__collapse_hists(struct report *rep)
 		if (pos->idx == 0)
 			hists->symbol_filter_str = rep->symbol_filter_str;
 
+		hists->socket_filter = rep->socket_filter;
+
 		hists__collapse_resort(hists, &prog);
 
 		/* Non-group events are considered as leader */
@@ -635,6 +643,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 		},
 		.max_stack		 = PERF_MAX_STACK_DEPTH,
 		.pretty_printing_style	 = "normal",
+		.socket_filter		 = -1,
 	};
 	const struct option options[] = {
 	OPT_STRING('i', "input", &input_name, "file",
@@ -747,6 +756,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 			"Show full source file name path for source lines"),
 	OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
 		    "Show callgraph from reference event"),
+	OPT_INTEGER(0, "socket-filter", &report.socket_filter,
+		    "only show processor socket that match with this filter"),
 	OPT_END()
 	};
 	struct perf_data_file file = {

tools/perf/ui/browsers/hists.c

@@ -1261,6 +1261,7 @@ static int hists__browser_title(struct hists *hists,
 	int printed;
 	const struct dso *dso = hists->dso_filter;
 	const struct thread *thread = hists->thread_filter;
+	int socket = hists->socket_filter;
 	unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 	u64 nr_events = hists->stats.total_period;
 	struct perf_evsel *evsel = hists_to_evsel(hists);
@@ -1314,6 +1315,9 @@ static int hists__browser_title(struct hists *hists,
 	if (dso)
 		printed += scnprintf(bf + printed, size - printed,
 				    ", DSO: %s", dso->short_name);
+	if (socket > -1)
+		printed += scnprintf(bf + printed, size - printed,
+				    ", Processor Socket: %d", socket);
 	if (!is_report_browser(hbt)) {
 		struct perf_top *top = hbt->arg;
 

tools/perf/util/hist.c

@@ -15,6 +15,8 @@ static bool hists__filter_entry_by_thread(struct hists *hists,
 					  struct hist_entry *he);
 static bool hists__filter_entry_by_symbol(struct hists *hists,
 					  struct hist_entry *he);
+static bool hists__filter_entry_by_socket(struct hists *hists,
+					  struct hist_entry *he);
 
 u16 hists__col_len(struct hists *hists, enum hist_column col)
 {
@@ -1027,6 +1029,7 @@ static void hists__apply_filters(struct hists *hists, struct hist_entry *he)
 	hists__filter_entry_by_dso(hists, he);
 	hists__filter_entry_by_thread(hists, he);
 	hists__filter_entry_by_symbol(hists, he);
+	hists__filter_entry_by_socket(hists, he);
 }
 
 void hists__collapse_resort(struct hists *hists, struct ui_progress *prog)
@@ -1295,6 +1298,18 @@ void hists__filter_by_symbol(struct hists *hists)
 	}
 }
 
+static bool hists__filter_entry_by_socket(struct hists *hists,
+					  struct hist_entry *he)
+{
+	if ((hists->socket_filter > -1) &&
+	    (he->socket != hists->socket_filter)) {
+		he->filtered |= (1 << HIST_FILTER__SOCKET);
+		return true;
+	}
+
+	return false;
+}
+
 void events_stats__inc(struct events_stats *stats, u32 type)
 {
 	++stats->nr_events[0];
@@ -1520,6 +1535,7 @@ static int hists_evsel__init(struct perf_evsel *evsel)
 	hists->entries_collapsed = RB_ROOT;
 	hists->entries = RB_ROOT;
 	pthread_mutex_init(&hists->lock, NULL);
+	hists->socket_filter = -1;
 	return 0;
 }
 

tools/perf/util/hist.h

@@ -20,6 +20,7 @@ enum hist_filter {
 	HIST_FILTER__SYMBOL,
 	HIST_FILTER__GUEST,
 	HIST_FILTER__HOST,
+	HIST_FILTER__SOCKET,
 };
 
 enum hist_column {
@@ -71,6 +72,7 @@ struct hists {
 	struct events_stats	stats;
 	u64			event_stream;
 	u16			col_len[HISTC_NR_COLS];
+	int			socket_filter;
 };
 
 struct hist_entry_iter;
@@ -149,7 +151,7 @@ void hists__filter_by_symbol(struct hists *hists);
 static inline bool hists__has_filter(struct hists *hists)
 {
 	return hists->thread_filter || hists->dso_filter ||
-		hists->symbol_filter_str;
+		hists->symbol_filter_str || (hists->socket_filter > -1);
 }
 
 u16 hists__col_len(struct hists *hists, enum hist_column col);