perf record: Remove newline character from perror() argument

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@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <89e77b54659bc3798b23a5596c2debb7f6f4cf27.1283010281.git.matt@console-pimps.org>
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@felicio.ghostprotocols.net>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index ff77b805de71ac1b0d058a1489efd34797b9a004..b530beefd9ad1286b410392b0d36a0f8dbc18e5e 100644 (file)
--- 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;
        }