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Date:   Thu, 2 May 2019 22:54:18 -0700
From:   tip-bot for Leo Yan <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, rostedt@...dmis.org, hpa@...or.com,
        tglx@...utronix.de, leo.yan@...aro.org,
        linux-kernel@...r.kernel.org, acme@...hat.com
Subject: [tip:perf/urgent] tools lib traceevent: Change tag string for error

Commit-ID:  5f05182fab9a29fea6c4ab8113be45adf0c11bf0
Gitweb:     https://git.kernel.org/tip/5f05182fab9a29fea6c4ab8113be45adf0c11bf0
Author:     Leo Yan <leo.yan@...aro.org>
AuthorDate: Wed, 24 Apr 2019 09:38:02 +0800
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 2 May 2019 16:00:19 -0400

tools lib traceevent: Change tag string for error

The traceevent lib is used by the perf tool, and when executing

  perf test -v 6

it outputs error log on the ARM64 platform:

  running test 33 '*:*'trace-cmd: No such file or directory

  [...]

  trace-cmd: Invalid argument

The trace event parsing code originally came from trace-cmd so it keeps
the tag string "trace-cmd" for errors, this easily introduces the
impression that the perf tool launches trace-cmd command for trace event
parsing, but in fact the related parsing is accomplished by the
traceevent lib.

This patch changes the tag string to "libtraceevent" so that we can
avoid confusion and let users to more easily connect the error with
traceevent lib.

Signed-off-by: Leo Yan <leo.yan@...aro.org>
Acked-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Link: http://lkml.kernel.org/r/20190424013802.27569-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/lib/traceevent/parse-utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/traceevent/parse-utils.c b/tools/lib/traceevent/parse-utils.c
index 77e4ec6402dd..e99867111387 100644
--- a/tools/lib/traceevent/parse-utils.c
+++ b/tools/lib/traceevent/parse-utils.c
@@ -14,7 +14,7 @@
 void __vwarning(const char *fmt, va_list ap)
 {
 	if (errno)
-		perror("trace-cmd");
+		perror("libtraceevent");
 	errno = 0;
 
 	fprintf(stderr, "  ");

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