perf record: Reset event name when falling back to cpu-clock

perf-record defaults to the H/W cycles event and if it is not supported
falls back to cpu-clock. Reset the event name as well.

Signed-off-by: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1336495811-58461-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 1a9098c697b44a0d181aa28fd2192578f27150af..d19058a7b84cfbd45547c8e2f004c82d7462580d 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -256,6 +256,10 @@ try_again:
                                                    "trying to fall back to cpu-clock-ticks\n");
                                attr->type = PERF_TYPE_SOFTWARE;
                                attr->config = PERF_COUNT_SW_CPU_CLOCK;
+                               if (pos->name) {
+                                       free(pos->name);
+                                       pos->name = NULL;
+                               }
                                goto try_again;
                        }