[PATCH 08/20] perf tools: Add set_term_quiet_input helper function

Jiri Olsa
2014-08-11T08:50:53Z

Adding set_term_quiet_input helper to set the terminal
quiet. It will be used in following patches.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/util.c | 13 +++++++++++++
tools/perf/util/util.h | 2 ++
2 files changed, 15 insertions(+)

diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index b82a93cb1694..25822bdf7bbf 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -13,6 +13,7 @@
#include <limits.h>
#include <byteswap.h>
#include <linux/kernel.h>
+#include <unistd.h>

/*
* XXX We need to find a better place for these things...
@@ -282,6 +283,18 @@ void get_term_dimensions(struct winsize *ws)
ws->ws_col = 80;
}

+void set_term_quiet_input(struct termios *old)
+{
+ struct termios tc;
+
+ tcgetattr(0, old);
+ tc = *old;
+ tc.c_lflag &= ~(ICANON | ECHO);
+ tc.c_cc[VMIN] = 0;
+ tc.c_cc[VTIME] = 0;
+ tcsetattr(0, TCSANOW, &tc);
+}
+
static void set_tracing_events_path(const char *mountpoint)
{
snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s",
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 03a1ea2266b8..d6a79b1fb28c 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -75,6 +75,7 @@
#include <api/fs/debugfs.h>
#include <termios.h>
#include <linux/bitops.h>
+#include <termios.h>

extern const char *graph_line;
extern const char *graph_dotted_line;
@@ -308,6 +309,7 @@ extern unsigned int page_size;
extern int cacheline_size;

void get_term_dimensions(struct winsize *ws);
+void set_term_quiet_input(struct termios *old);

struct parse_tag {
char tag;
--
1.8.3.1