perf evlist: Remove obsolete dummy execve

Minor cleanup.

The dummy execve to pre-resolve the PLT is obsolete since
"enable_on_execve" was added. The counters are only
running after the execve anyways. So just remove it.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1375490473-1503-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index da2dd92..c7d111f 100644 (file)
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -836,13 +836,6 @@ int perf_evlist__prepare_workload(struct perf_evlist *evlist,
                close(go_pipe[1]);
                fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
 
-               /*
-                * Do a dummy execvp to get the PLT entry resolved,
-                * so we avoid the resolver overhead on the real
-                * execvp call.
-                */
-               execvp("", (char **)argv);
-
                /*
                 * Tell the parent we're ready to go
                 */