linux-kernel - Re: perf top -u <uid> does not seem to be working

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Message-ID: <20131112232609.GA31474@gmail.com>
Date:	Wed, 13 Nov 2013 00:26:09 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...radead.org>
Cc:	linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Jiri Olsa <jolsa@...hat.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Frédéric Weisbecker <fweisbec@...il.com>
Subject: Re: perf top -u <uid> does not seem to be working


an unrelated bug is a missing newline if the 'uid' is invalid:

  hubble:~> perf top --stdio -u help
  Error:
  Invalid User: helphubble:~> 

Fixed by the patch below.

  comet:~/tip/tools/perf> perf top --stdio -u help
  Error:
  Invalid User: help
  comet:~/tip/tools/perf> 

Signed-off-by: Ingo Molnar <mingo@...nel.org>

 tools/perf/builtin-top.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index b8f8e29..71e6402 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1172,7 +1172,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
 	status = target__validate(target);
 	if (status) {
 		target__strerror(target, status, errbuf, BUFSIZ);
-		ui__warning("%s", errbuf);
+		ui__warning("%s\n", errbuf);
 	}
 
 	status = target__parse_uid(target);
@@ -1180,7 +1180,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
 		int saved_errno = errno;
 
 		target__strerror(target, status, errbuf, BUFSIZ);
-		ui__error("%s", errbuf);
+		ui__error("%s\n", errbuf);
 
 		status = -saved_errno;
 		goto out_delete_evlist;

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