The following commit has been merged into the perf/core branch of tip: Commit-ID: 2284cf8074ff12b6304665618f81ced3aa0b41de Gitweb: https://git.kernel.org/tip/2284cf8074ff12b6304665618f81ced3aa0b41de Author: Arnaldo Carvalho de Melo <a...@redhat.com> AuthorDate: Mon, 19 Aug 2019 16:43:58 -03:00 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitterDate: Tue, 20 Aug 2019 12:22:18 -03:00
perf ui browser: Allow specifying message to show when no samples are available to display The 'perf top' tool will use that to avoid having a initial blank screen while collecting the minimum number of samples to sort and display. Cc: Adrian Hunter <adrian.hun...@intel.com> Cc: Jiri Olsa <jo...@kernel.org> Cc: Namhyung Kim <namhy...@kernel.org> Link: https://lkml.kernel.org/n/tip-89ciceg8cy4442he3t0jz...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/ui/browser.c | 2 ++ tools/perf/ui/browser.h | 1 + 2 files changed, 3 insertions(+) diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c index d227d74..c797a85 100644 --- a/tools/perf/ui/browser.c +++ b/tools/perf/ui/browser.c @@ -347,6 +347,8 @@ static int __ui_browser__refresh(struct ui_browser *browser) SLsmg_fill_region(browser->y + row + browser->extra_title_lines, browser->x, browser->rows - row, width, ' '); + if (browser->nr_entries == 0 && browser->no_samples_msg) + __ui__info_window(NULL, browser->no_samples_msg, NULL); return 0; } diff --git a/tools/perf/ui/browser.h b/tools/perf/ui/browser.h index dc14441..3678eb8 100644 --- a/tools/perf/ui/browser.h +++ b/tools/perf/ui/browser.h @@ -23,6 +23,7 @@ struct ui_browser { void *priv; const char *title; char *helpline; + const char *no_samples_msg; void (*refresh_dimensions)(struct ui_browser *browser); unsigned int (*refresh)(struct ui_browser *browser); void (*write)(struct ui_browser *browser, void *entry, int row);
