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Commit 9398c484 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Introduce set_term_quiet_input helper function 



Adding set_term_quiet_input helper to set the terminal quiet, out from
'perf top', used in following patches in 'perf kvm'.

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
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>
Link: http://lkml.kernel.org/r/1407747014-18394-9-git-send-email-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent ae256fa2

tools/perf/builtin-top.c

+2 −8
Original line number Diff line number Diff line
@@ -580,20 +580,14 @@ static void *display_thread_tui(void *arg) 
static void *display_thread(void *arg)

{

	struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };

	struct termios tc, save;

	struct termios save;

	struct perf_top *top = arg;

	int delay_msecs, c;



	tcgetattr(0, &save);

	tc = save;

	tc.c_lflag &= ~(ICANON | ECHO);

	tc.c_cc[VMIN] = 0;

	tc.c_cc[VTIME] = 0;



	pthread__unblock_sigwinch();

repeat:

	delay_msecs = top->delay_secs * 1000;

	tcsetattr(0, TCSANOW, &tc);

	set_term_quiet_input(&save);

	/* trash return*/

	getc(stdin);

tools/perf/util/util.c

+13 −0
Original line number Diff line number Diff line
@@ -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",

tools/perf/util/util.h

+2 −0
Original line number Diff line number Diff line
@@ -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;