linux-kernel - [tip:perf/core] perf tools: Do not print missing features in pipe-mode

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Date:   Tue, 11 Apr 2017 22:41:33 -0700
From:   tip-bot for David Carrillo-Cisneros <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     alexander.shishkin@...ux.intel.com, linux-kernel@...r.kernel.org,
        peterz@...radead.org, acme@...hat.com, mingo@...nel.org,
        pjt@...gle.com, jolsa@...nel.org, ak@...ux.intel.com,
        mhiramat@...nel.org, eranian@...gle.com, tglx@...utronix.de,
        hekuang@...wei.com, hpa@...or.com, sque@...omium.org,
        wangnan0@...wei.com, davidcc@...gle.com
Subject: [tip:perf/core] perf tools: Do not print missing features in
 pipe-mode

Commit-ID:  c9d1c93421e3b3c7051b193c9cf648a3bc55cb3e
Gitweb:     http://git.kernel.org/tip/c9d1c93421e3b3c7051b193c9cf648a3bc55cb3e
Author:     David Carrillo-Cisneros <davidcc@...gle.com>
AuthorDate: Mon, 10 Apr 2017 13:14:32 -0700
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 11 Apr 2017 16:22:22 -0300

perf tools: Do not print missing features in pipe-mode

Pipe-mode has no perf.data header, hence no upfront knowledge of presend
and missing features, hence, do not print missing features in pipe-mode.

Signed-off-by: David Carrillo-Cisneros <davidcc@...gle.com>
Acked-by: Jiri Olsa <jolsa@...nel.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: He Kuang <hekuang@...wei.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Paul Turner <pjt@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Simon Que <sque@...omium.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/20170410201432.24807-8-davidcc@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/header.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index ef09f26..2ccc7f0 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2270,6 +2270,9 @@ int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full)
 	perf_header__process_sections(header, fd, &hd,
 				      perf_file_section__fprintf_info);
 
+	if (session->file->is_pipe)
+		return 0;
+
 	fprintf(fp, "# missing features: ");
 	for_each_clear_bit(bit, header->adds_features, HEADER_LAST_FEATURE) {
 		if (bit)