Commit-ID: ae3b6ab603bce6a74ca089f7a944196863166a52 Gitweb: http://git.kernel.org/tip/ae3b6ab603bce6a74ca089f7a944196863166a52 Author: Arnaldo Carvalho de Melo <[email protected]> AuthorDate: Fri, 19 Jun 2015 17:35:25 -0300 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Fri, 19 Jun 2015 18:13:59 -0300
perf top: Tell the user how to unfreeze events after pressing 'f' When the user presses 'f' to disable events the visual cues are, well, the percentages not changing and the number of events freezing. Be more explicit by changing the help line at the bottom of the screen to show the following messages when 'f' is pressed: "Press 'f' again to re-enable the events" And then, when 'f' is pressed again: "Press 'f' to disable the events or 'h' Suggested-by: Ingo Molnar <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/builtin-top.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index ccf569a..70a9505 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -599,7 +599,13 @@ static void *display_thread_tui(void *arg) * No need to refresh, resort/decay histogram entries * if we are not collecting samples: */ - hbt.refresh = top->evlist->enabled ? top->delay_secs : 0; + if (top->evlist->enabled) { + hbt.refresh = top->delay_secs; + help = "Press 'f' to disable the events or 'h' to see other hotkeys"; + } else { + help = "Press 'f' again to re-enable the events"; + hbt.refresh = 0; + } } done = 1; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/
