From 6af6d22495efeb00cb4e220a4e6e30b5be3afdf3 Mon Sep 17 00:00:00 2001 From: Ahelenia Ziemiańska Date: Tue, 27 Dec 2022 21:57:40 +0100 Subject: perf TUI: Don't ignore job control MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In its infinite wisdom, by default, SLang sets susp undef, and this can only be un-done by calling SLtty_set_suspend_state(true). After every SLang_init_tty(). Additionally, no provisions are made for maintaining the teletype attributes across suspend/continue (outside of curses emulation mode(?!), which provides full support, naturally), so we need to save and restore the flags ourselves, as well as reset the text colours when going under. We need to also re-draw the screen, and raising SIGWINCH, shockingly, Just Works. The correct solution would be to Not Use SLang, but as a stop-gap, this makes TUI 'perf report' usable. Signed-off-by: Ahelenia Ziemiańska Tested-by: Arnaldo Carvalho de Melo Tested-by: Namhyung Kim Cc: Alexander Shishkin Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mark Rutland Cc: Peter Zijlstra Cc: yaowenbin Link: https://lore.kernel.org/r/0354dcae23a8713f75f4fed609e0caec3c6e3cd5.1672174189.git.nabijaczleweli@nabijaczleweli.xyz Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/annotate.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools/perf/ui/browsers/annotate.c') diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c index cb2eb6dcb532..ec5e21932876 100644 --- a/tools/perf/ui/browsers/annotate.c +++ b/tools/perf/ui/browsers/annotate.c @@ -938,6 +938,7 @@ int hist_entry__tui_annotate(struct hist_entry *he, struct evsel *evsel, /* reset abort key so that it can get Ctrl-C as a key */ SLang_reset_tty(); SLang_init_tty(0, 0, 0); + SLtty_set_suspend_state(true); return map_symbol__tui_annotate(&he->ms, evsel, hbt); } -- cgit