kernel/tools/perf/ui/tui/progress.c, branch linux-4.1.y

perf ui tui progress: Don't force a refresh during progress update

2013-11-11T18:56:39Z

Each call to tui_progress__update() would forcibly refresh the entire screen. This is somewhat inefficient and causes noticable flickering during the startup of perf-report, especially on large/slow terminals. It looks like the force-refresh in tui_progress__update() serves no purpose other than to clear the screen so that the progress bar of a previous operation does not subsume that of a subsequent operation. But we can do just that in a much more efficient manner by clearing only the region that a previous progress bar may have occupied before repainting the new progress bar. Then the force-refresh could be removed with no change in visuals. This patch disables the slow force-refresh in tui_progress__update() and instead calls SLsmg_fill_region() on the entire area that the progress bar may occupy before repainting it. This change makes the startup of perf-report much faster and appear much "smoother". It turns out that this was a big bottleneck in the startup speed of perf-report -- with this patch, perf-report starts up ~2x faster (1.1s vs 0.55s) on my machines. (These numbers were measured by running "time perf report" on an 8MB perf.data and pressing 'q' immediately.) Signed-off-by: Patrick Palka Acked-by: Ingo Molnar Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1382747149-9716-1-git-send-email-patrick@parcs.ath.cx Signed-off-by: Arnaldo Carvalho de Melo

perf ui progress: Per progress bar state

2013-10-23T18:40:38Z

That will ease using a progress bar across multiple functions, like in the upcoming patches that will present a progress bar when collapsing histograms. Based on a previous patch by Namhyung Kim. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-cr7lq7ud9fj21bg7wvq27w1u@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf ui: Rename ui_progress to ui_progress_ops

2013-10-23T17:41:23Z

Reserving 'struct ui_progress' to the per progress instances, not to the particular set of operations used to implmenet a progress bar in the current UI (GTK, TUI, etc). Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-zjqbfp9gx3yo45s0rp9uv42n@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf ui: Introduce generic ui_progress helper

2012-11-14T19:52:39Z

Make ui_progress functions generic so that UI frontend code will add its callbacks. Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Pekka Enberg Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1352813436-14173-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf ui tui: Move progress.c under ui/tui directory

2012-11-14T19:52:33Z

Current ui_progress functions are implemented for TUI only. So move the file under the tui directory. This is needed for providing an UI- agnostic wrapper. Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Pekka Enberg Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1352813436-14173-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo