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* [PATCH] tools lib traceevent: Change tag string for error
@ 2019-04-24  1:38 Leo Yan
  2019-04-24 12:08 ` Steven Rostedt
  2019-05-03  5:54 ` [tip:perf/urgent] " tip-bot for Leo Yan
  0 siblings, 2 replies; 5+ messages in thread
From: Leo Yan @ 2019-04-24  1:38 UTC (permalink / raw)
  To: Steven Rostedt (VMware), Arnaldo Carvalho de Melo, linux-kernel; +Cc: Leo Yan

The traceevnt lib is used by perf tool, when execute 'perf test -v 6' it
outputs error log on 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 perf tool launches trace-cmd command for trace event
parsing, but in fact the related parsing is accomplished by traceevent
lib.

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

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
 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, "  ");
-- 
2.17.1


^ permalink raw reply	[flat|nested] 5+ messages in thread

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Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2019-04-24  1:38 [PATCH] tools lib traceevent: Change tag string for error Leo Yan
2019-04-24 12:08 ` Steven Rostedt
2019-04-24 12:44   ` Arnaldo Carvalho de Melo
2019-04-24 12:45     ` Leo Yan
2019-05-03  5:54 ` [tip:perf/urgent] " tip-bot for Leo Yan

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