perf hists browser: Zoom in/out for processor socket

Currently, users can zoom in/out for threads and dso in 'perf top' and
'perf report'.

This patch extends it for the processor sockets.

'S' is the short key to zoom into current Processor Socket.

Signed-off-by: Kan Liang <kan.liang@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.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/1441377946-44429-4-git-send-email-kan.liang@intel.com
[ - Made it elide the Socket column when zooming into it,
    just like with the other zoom ops;
  - Make it use browser->pstack, to unzoom level by level;
  - Rename 'socket' variables to 'socket_id' to make it build on
    older systems where it shadows a global glibc declaration ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 9b50836..e4e3f14 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -287,7 +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;
+	int socked_id = hists->socket_filter;
 
 	if (symbol_conf.filter_relative) {
 		nr_samples = hists->stats.nr_non_filtered_samples;
@@ -329,8 +329,8 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
 	} else
 		ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 
-	if (socket > -1)
-		ret += fprintf(fp, "\n# Processor Socket: %d", socket);
+	if (socked_id > -1)
+		ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
 
 	return ret + fprintf(fp, "\n#\n");
 }