linux-kernel - [PATCH 5/3] perf report: Check attr.inherit

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

Date:	Mon, 11 May 2015 22:49:31 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>
Subject: [PATCH 5/3] perf report: Check attr.inherit_stat bit for --show-threads

Check the evsel->attr.inherit_stat bit and show warning message if it's
missing and -T/--threads option was given:

  $ perf report -T
  Error: perf.data file has no per-thread stat data.
         Did you run 'perf record' with -s option?

Suggested-by: David Ahern <dsahern@...il.com>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/builtin-report.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 6ac2c7a01a63..ac2dc057cbc5 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -848,6 +848,19 @@ repeat:
 		      stdout);
 	}
 
+	if (report.show_threads) {
+		struct perf_evsel *evsel;
+
+		evlist__for_each(session->evlist, evsel) {
+			if (!evsel->attr.inherit_stat) {
+				pr_err("Error: %s file has no per-thread stat data.\n"
+				       "       Did you run 'perf record' with -s option?\n",
+					input_name);
+				goto error;
+			}
+		}
+	}
+
 	/*
 	 * Only in the TUI browser we are doing integrated annotation,
 	 * so don't allocate extra space that won't be used in the stdio
-- 
2.4.0

--
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/