linux-kernel - [tip:perf/core] perf inject: Hit all DSOs for AUX data in JIT and other cases

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Message-ID: <tip-640dad47988ec4b734d71934be103bb6e931279f@git.kernel.org>
Date:	Tue, 8 Mar 2016 02:30:01 -0800
From:	tip-bot for Adrian Hunter <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, tglx@...utronix.de, linux-kernel@...r.kernel.org,
	eranian@...gle.com, jolsa@...hat.com, dsahern@...il.com,
	adrian.hunter@...el.com, alexander.shishkin@...ux.intel.com,
	hpa@...or.com, peterz@...radead.org, mingo@...nel.org,
	namhyung@...nel.org
Subject: [tip:perf/core] perf inject: Hit all DSOs for AUX data in JIT and
 other cases

Commit-ID:  640dad47988ec4b734d71934be103bb6e931279f
Gitweb:     http://git.kernel.org/tip/640dad47988ec4b734d71934be103bb6e931279f
Author:     Adrian Hunter <adrian.hunter@...el.com>
AuthorDate: Mon, 7 Mar 2016 16:44:38 -0300
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 8 Mar 2016 10:11:16 +0100

perf inject: Hit all DSOs for AUX data in JIT and other cases

Currently, when injecting build ids, if there is AUX data then 'perf
inject' hits all DSOs because it is not known which DSOs the trace data
would hit.

That needs to be done for JIT injection also, and in fact there is no
reason to distinguish what kind of injection is being done.  That is,
any time there is AUX data and the HEADER_BUID_ID feature flag is set,
and the AUX data is not being processed, then hit all DSOs.  This patch
does that.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/1457005856-6143-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 tools/perf/builtin-inject.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index b38445f..c6a4f2f 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -679,12 +679,16 @@ static int __cmd_inject(struct perf_inject *inject)
 	ret = perf_session__process_events(session);
 
 	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_auxtrace)
-				dsos__hit_all(session);
-		}
+		/*
+		 * Keep all buildids when there is unprocessed AUX data because
+		 * it is not known which ones the AUX trace hits.
+		 */
+		if (perf_header__has_feat(&session->header, HEADER_BUILD_ID) &&
+		    inject->have_auxtrace && !inject->itrace_synth_opts.set)
+			dsos__hit_all(session);
 		/*
 		 * The AUX areas have been removed and replaced with
 		 * synthesized hardware events, so clear the feature flag and