perf mem: Clean up perf_mem_events__record_args()

The current code iterates all memory PMUs. It doesn't matter if the
system has only one memory PMU or multiple PMUs. The check of
perf_pmus__num_mem_pmus() is not required anymore.

The rec_tmp is not used in c2c and mem. Removing them as well.

Suggested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Cc: ravi.bangoria@amd.com
Cc: james.clark@arm.com
Cc: will@kernel.org
Cc: mike.leach@linaro.org
Cc: renyu.zj@linux.alibaba.com
Cc: yuhaixin.yhx@linux.alibaba.com
Cc: tmricht@linux.ibm.com
Cc: atrajeev@linux.vnet.ibm.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: john.g.garry@oracle.com
Link: https://lore.kernel.org/r/20240123185036.3461837-7-kan.liang@linux.intel.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

1 files changed, 2 insertions, 13 deletions

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 838481505e08..3bcb903b6b38 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -3245,9 +3245,8 @@ static const char * const *record_mem_usage = __usage_record;
 
 static int perf_c2c__record(int argc, const char **argv)
 {
-	int rec_argc, i = 0, j, rec_tmp_nr = 0;
+	int rec_argc, i = 0, j;
 	const char **rec_argv;
-	char **rec_tmp;
 	int ret;
 	bool all_user = false, all_kernel = false;
 	bool event_set = false;
@@ -3285,12 +3284,6 @@ static int perf_c2c__record(int argc, const char **argv)
 	if (!rec_argv)
 		return -1;
 
-	rec_tmp = calloc(rec_argc + 1, sizeof(char *));
-	if (!rec_tmp) {
-		free(rec_argv);
-		return -1;
-	}
-
 	rec_argv[i++] = "record";
 
 	if (!event_set) {
@@ -3319,7 +3312,7 @@ static int perf_c2c__record(int argc, const char **argv)
 	rec_argv[i++] = "--phys-data";
 	rec_argv[i++] = "--sample-cpu";
 
-	ret = perf_mem_events__record_args(rec_argv, &i, rec_tmp, &rec_tmp_nr);
+	ret = perf_mem_events__record_args(rec_argv, &i);
 	if (ret)
 		goto out;
 
@@ -3346,10 +3339,6 @@ static int perf_c2c__record(int argc, const char **argv)
 
 	ret = cmd_record(i, rec_argv);
 out:
-	for (i = 0; i < rec_tmp_nr; i++)
-		free(rec_tmp[i]);
-
-	free(rec_tmp);
 	free(rec_argv);
 	return ret;
 }