[PATCH 1/4] perf record: Remove newline character from perror() argument

From: Arnaldo Carvalho de Melo
Date: Fri Nov 19 2010 - 16:30:22 EST


From: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>

If we include a newline character in the string argument to perror()
then the output will be split across two lines like so,

Unable to read perf file descriptor
: No space left on device

Deleting the newline character prints a much more readable error,

Unable to read perf file descriptor: No space left on device

Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Tom Zanussi <tzanussi@xxxxxxxxx>
LKML-Reference: <89e77b54659bc3798b23a5596c2debb7f6f4cf27.1283010281.git.matt@xxxxxxxxxxxxxxxxx>
Signed-off-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxxxxxxxxxx>
---
tools/perf/builtin-record.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index ff77b80..b530bee 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -353,7 +353,7 @@ try_again:
}

if (read(fd[nr_cpu][counter][thread_index], &read_data, sizeof(read_data)) == -1) {
- perror("Unable to read perf file descriptor\n");
+ perror("Unable to read perf file descriptor");
exit(-1);
}

@@ -626,7 +626,7 @@ static int __cmd_record(int argc, const char **argv)

nr_cpus = read_cpu_map(cpu_list);
if (nr_cpus < 1) {
- perror("failed to collect number of CPUs\n");
+ perror("failed to collect number of CPUs");
return -1;
}

--
1.6.2.5

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