perf tools: Remove unused 'prefix' from builtin functions

We got it from the git sources but never used it for anything, with the
place where this would be somehow used remaining:

  static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
  {
	prefix = NULL;
	if (p->option & RUN_SETUP)
		prefix = NULL; /* setup_perf_directory(); */

Ditch it.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-uw5swz05vol0qpr32c5lpvus@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 030a6cfdda59..643f4faac0d0 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -129,7 +129,7 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
                 pr_debug("\n");
         }
 
-        ret = cmd_record(i, rec_argv, NULL);
+        ret = cmd_record(i, rec_argv);
         free(rec_argv);
         return ret;
 }
@@ -256,7 +256,7 @@ static int report_events(int argc, const char **argv, struct perf_mem *mem)
         for (j = 1; j < argc; j++, i++)
                 rep_argv[i] = argv[j];
 
-        ret = cmd_report(i, rep_argv, NULL);
+        ret = cmd_report(i, rep_argv);
         free(rep_argv);
         return ret;
 }
@@ -330,7 +330,7 @@ error:
         return ret;
 }
 
-int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused)
+int cmd_mem(int argc, const char **argv)
 {
         struct stat st;
         struct perf_mem mem = {