The TUI code setup standard signals handling, while the stdio display code does not. This leads to premature termination of display thread when signal is received and leaving terminal in wrong state.
Also adding terminal cleanup at the end of display thread, to ensure we get the old terminal state in case of signal interruption. Cc: Adrian Hunter <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Corey Ashford <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jean Pihet <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> --- tools/perf/builtin-top.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index f19321282436..9b4edf0bd49f 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -579,6 +579,20 @@ static void *display_thread_tui(void *arg) return NULL; } +static void display_sig(int sig __maybe_unused) +{ + done = 1; +} + +static void display_setup_sig(void) +{ + signal(SIGSEGV, display_sig); + signal(SIGFPE, display_sig); + signal(SIGINT, display_sig); + signal(SIGQUIT, display_sig); + signal(SIGTERM, display_sig); +} + static void *display_thread(void *arg) { struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; @@ -586,6 +600,7 @@ static void *display_thread(void *arg) struct perf_top *top = arg; int delay_msecs, c; + display_setup_sig(); pthread__unblock_sigwinch(); repeat: delay_msecs = top->delay_secs * 1000; @@ -616,6 +631,7 @@ repeat: } } + tcsetattr(0, TCSAFLUSH, &save); return NULL; } -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
