From: Ravi Bangoria <[email protected]>

Warn perf buildid-cache --purge-all failures in non verbose mode.

Ex.:

  $ sudo chown root:root /home/ravi/.debug -R
  $ sudo chmod 700 /home/ravi/.debug/ -R
  $ ./perf buildid-cache -P
    Couldn't remove some caches. Error: Permission denied.

Suggested-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Ravi Bangoria <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: 
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/builtin-buildid-cache.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-buildid-cache.c 
b/tools/perf/builtin-buildid-cache.c
index 7a7403913b57..115110a4796a 100644
--- a/tools/perf/builtin-buildid-cache.c
+++ b/tools/perf/builtin-buildid-cache.c
@@ -488,8 +488,12 @@ int cmd_buildid_cache(int argc, const char **argv)
                }
        }
 
-       if (purge_all)
-               ret = build_id_cache__purge_all();
+       if (purge_all) {
+               if (build_id_cache__purge_all()) {
+                       pr_warning("Couldn't remove some caches. Error: %s.\n",
+                               str_error_r(errno, sbuf, sizeof(sbuf)));
+               }
+       }
 
        if (missing_filename)
                ret = build_id_cache__fprintf_missing(session, stdout);
-- 
2.14.3

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