linux-kernel - [tip:perf/core] perf tools: Make Ctrl-C stop processing on TUI

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <tip-ed426915900db3c58c410b8b38f6ff0e46bf6c96@git.kernel.org>
Date:	Fri, 29 May 2015 11:39:02 -0700
From:	tip-bot for Namhyung Kim <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	hpa@...or.com, dsahern@...il.com, mingo@...nel.org,
	acme@...hat.com, tglx@...utronix.de, a.p.zijlstra@...llo.nl,
	jolsa@...hat.com, linux-kernel@...r.kernel.org, namhyung@...nel.org
Subject: [tip:perf/core] perf tools: Make Ctrl-C stop processing on TUI

Commit-ID:  ed426915900db3c58c410b8b38f6ff0e46bf6c96
Gitweb:     http://git.kernel.org/tip/ed426915900db3c58c410b8b38f6ff0e46bf6c96
Author:     Namhyung Kim <namhyung@...nel.org>
AuthorDate: Fri, 29 May 2015 21:53:44 +0900
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Fri, 29 May 2015 12:49:00 -0300

perf tools: Make Ctrl-C stop processing on TUI

It was inconvenient that perf cannot be quit with SIGINT during
processing samples on TUI especially for large data files.

This was because the first argument of SLang_init_tty(), abort_char,
being 0.  The manual says it's the ascii value of the control character
that will be used to generate the interrupt signal [1].  Passing -1
means to use the default value (Ctrl-C).

However, after processing samples, Ctrl-C was used to in other cases as
well - like stepping back from annotate.  So recover the original
behavior after processing.

[1] http://jedsoft.org/slang/doc/html/cslang-6.html#ss6.1

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1432904024-13170-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/ui/browsers/annotate.c | 4 ++++
 tools/perf/ui/browsers/hists.c    | 4 ++++
 tools/perf/ui/tui/setup.c         | 2 +-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index e5250eb..acb0e23 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -838,6 +838,10 @@ int map_symbol__tui_annotate(struct map_symbol *ms, struct perf_evsel *evsel,
 int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
 			     struct hist_browser_timer *hbt)
 {
+	/* reset abort key so that it can get Ctrl-C as a key */
+	SLang_reset_tty();
+	SLang_init_tty(0, 0, 0);
+
 	return map_symbol__tui_annotate(&he->ms, evsel, hbt);
 }
 
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index f981cb8..e64893f 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1741,6 +1741,10 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 	if (browser == NULL)
 		return -1;
 
+	/* reset abort key so that it can get Ctrl-C as a key */
+	SLang_reset_tty();
+	SLang_init_tty(0, 0, 0);
+
 	if (min_pcnt) {
 		browser->min_pcnt = min_pcnt;
 		hist_browser__update_nr_entries(browser);
diff --git a/tools/perf/ui/tui/setup.c b/tools/perf/ui/tui/setup.c
index b77e1d7..60d1f29 100644
--- a/tools/perf/ui/tui/setup.c
+++ b/tools/perf/ui/tui/setup.c
@@ -129,7 +129,7 @@ int ui__init(void)
 	err = SLsmg_init_smg();
 	if (err < 0)
 		goto out;
-	err = SLang_init_tty(0, 0, 0);
+	err = SLang_init_tty(-1, 0, 0);
 	if (err < 0)
 		goto out;
 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/