linux-kernel - [PATCH V5 22/25] perf tools: Hit all build ids when Instruction Tracing

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]

Message-Id: <1425762394-29799-23-git-send-email-adrian.hunter@intel.com>
Date:	Sat,  7 Mar 2015 23:06:31 +0200
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	Peter Zijlstra <peterz@...radead.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: [PATCH V5 22/25] perf tools: Hit all build ids when Instruction Tracing

We need to include all buildids when a perf.data
file contains Instruction Tracing data because we
do not decode the trace for that purpose because
it would take too long.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/builtin-buildid-list.c |  9 +++++++++
 tools/perf/builtin-inject.c       |  8 +++++++-
 tools/perf/builtin-record.c       | 10 +++++++++-
 3 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index ed3873b..d694309 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -69,6 +69,15 @@ static int perf_session__list_build_ids(bool force, bool with_hits)
 	session = perf_session__new(&file, false, &build_id__mark_dso_hit_ops);
 	if (session == NULL)
 		return -1;
+
+	/*
+	 * We take all buildids when the file contains Instruction Tracing data
+	 * because we do not decode the trace because it would take too long.
+	 */
+	if (!perf_data_file__is_pipe(&file) &&
+	    perf_header__has_feat(&session->header, HEADER_ITRACE))
+		with_hits = false;
+
 	/*
 	 * in pipe-mode, the only way to get the buildids is to parse
 	 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 8932161..69e1747 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -27,6 +27,7 @@ struct perf_inject {
 	struct perf_session	*session;
 	bool			build_ids;
 	bool			sched_stat;
+	bool			have_itrace;
 	const char		*input_name;
 	struct perf_data_file	output;
 	u64			bytes_written;
@@ -115,6 +116,8 @@ static s64 perf_event__repipe_itrace(struct perf_tool *tool,
 						  tool);
 	int ret;
 
+	inject->have_itrace = true;
+
 	if (!inject->output.is_pipe) {
 		off_t offset;
 
@@ -503,9 +506,12 @@ static int __cmd_inject(struct perf_inject *inject)
 	ret = perf_session__process_events(session, &inject->tool);
 
 	if (!file_out->is_pipe) {
-		if (inject->build_ids)
+		if (inject->build_ids) {
 			perf_header__set_feat(&session->header,
 					      HEADER_BUILD_ID);
+			if (inject->have_itrace)
+				dsos__hit_all(session);
+		}
 		/*
 		 * The instruction traces have been removed and replaced with
 		 * synthesized hardware events, so clear the feature flag.
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index caeaf43..cea5119 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -618,8 +618,16 @@ out_child:
 	if (!err && !file->is_pipe) {
 		rec->session->header.data_size += rec->bytes_written;
 
-		if (!rec->no_buildid)
+		if (!rec->no_buildid) {
 			process_buildids(rec);
+			/*
+			 * We take all buildids when the file contains
+			 * Instruction Tracing data because we do not decode the
+			 * trace because it would take too long.
+			 */
+			if (rec->opts.full_itrace)
+				dsos__hit_all(rec->session);
+		}
 		perf_session__write_header(rec->session, rec->evlist, fd, true);
 	}
 
-- 
1.9.1

--
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/