Commit-ID: d5b4130ae636e1fd0eaaea7152170198c34fbf62 Gitweb: http://git.kernel.org/tip/d5b4130ae636e1fd0eaaea7152170198c34fbf62 Author: Jiri Olsa <[email protected]> AuthorDate: Mon, 11 Aug 2014 10:50:09 +0200 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Wed, 13 Aug 2014 12:42:24 -0300
perf kvm: Fix stdin handling for 'kvm stat live' command Currently the initial ~(ICANON | ECHO) terminal mode is not set, so we dont get stdin data until we press ENTER. Fixing this by early setting of the ~(ICANON | ECHO) mode and leaving this mode for whole life of the command, because canonical mode is not needed. Signed-off-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[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]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/builtin-kvm.c | 18 +++++------------- 1 file changed, 5 insertions(+), 13 deletions(-) diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 7cccead..ff40475 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -885,15 +885,11 @@ static int fd_set_nonblock(int fd) return 0; } -static -int perf_kvm__handle_stdin(struct termios *tc_now, struct termios *tc_save) +static int perf_kvm__handle_stdin(void) { int c; - tcsetattr(0, TCSANOW, tc_now); c = getc(stdin); - tcsetattr(0, TCSAFLUSH, tc_save); - if (c == 'q') return 1; @@ -904,7 +900,7 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) { struct pollfd *pollfds = NULL; int nr_fds, nr_stdin, ret, err = -EINVAL; - struct termios tc, save; + struct termios save; /* live flag must be set first */ kvm->live = true; @@ -919,14 +915,9 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) goto out; } + set_term_quiet_input(&save); init_kvm_event_record(kvm); - tcgetattr(0, &save); - tc = save; - tc.c_lflag &= ~(ICANON | ECHO); - tc.c_cc[VMIN] = 0; - tc.c_cc[VTIME] = 0; - signal(SIGINT, sig_handler); signal(SIGTERM, sig_handler); @@ -972,7 +963,7 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) goto out; if (pollfds[nr_stdin].revents & POLLIN) - done = perf_kvm__handle_stdin(&tc, &save); + done = perf_kvm__handle_stdin(); if (!rc && !done) err = poll(pollfds, nr_fds, 100); @@ -989,6 +980,7 @@ out: if (kvm->timerfd >= 0) close(kvm->timerfd); + tcsetattr(0, TCSAFLUSH, &save); free(pollfds); return err; } -- 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/
