linux-kernel - [PATCH 3/6] perf header: Display feature name on write failure

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Message-Id: <1476188052-32316-4-git-send-email-jolsa@kernel.org>
Date:   Tue, 11 Oct 2016 14:14:09 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        David Ahern <dsahern@...il.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Subject: [PATCH 3/6] perf header: Display feature name on write failure

Display name of feature instead of just the number
during recording data.

Before:
  failed to write feature 13

Now:
  failed to write feature HEADER_CPU_TOPOLOGY

Link: http://lkml.kernel.org/n/tip-k9d9trozi5kkx737cy8n5xh5@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/header.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 59b67aefa8b2..43ded20f1edf 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2290,7 +2290,7 @@ static int do_write_feat(int fd, struct perf_header *h, int type,
 
 		err = feat_ops[type].write(fd, h, evlist);
 		if (err < 0) {
-			pr_debug("failed to write feature %d\n", type);
+			pr_debug("failed to write feature %s\n", feat_ops[type].name);
 
 			/* undo anything written */
 			lseek(fd, (*p)->offset, SEEK_SET);
-- 
2.7.4