perf tools: Unify debug messages mechanisms

We were using eprintf in some places, that looks at a global
'verbose' level, and at other places passing a 'v' parameter to
specify the verbosity level, unify it by introducing
pr_{err,warning,debug,etc}, just like in the kernel.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1256153646-10097-1-git-send-email-acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 8cb47f1d8a76..0f6d78c9863a 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -127,9 +127,9 @@ static void thread__remove_overlappings(struct thread *self, struct map *map)
                         continue;
 
                 if (verbose >= 2) {
-                        printf("overlapping maps:\n");
-                        map__fprintf(map, stdout);
-                        map__fprintf(pos, stdout);
+                        fputs("overlapping maps:\n", stderr);
+                        map__fprintf(map, stderr);
+                        map__fprintf(pos, stderr);
                 }
 
                 rb_erase(&pos->rb_node, &self->maps);