[LTP] [PATCH v2 4/4] cgroup: helpers various fixes

[Petr Vorel <pvorel@suse.cz>]

Hi Cristian,

> diff --git a/testcases/kernel/controllers/cgroup/cgroup_regress_test_6_2.c b/testcases/kernel/controllers/cgroup/cgroup_regress_test_6_2.c
> new file mode 100644
When you add new file, you need to put it also into .gitignore.
+ Remove /test_6_2 from it (original file).

...
> +++ b/testcases/kernel/controllers/cgroup/cgroup_regress_test_6_2.c
> @@ -0,0 +1,37 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (c) 2009 FUJITSU LIMITED
> + *
> + * Author: Li Zefan <lizf@cn.fujitsu.com>
> + */
> +
> +#define _GNU_SOURCE
Is _GNU_SOURCE really needed?

> +#include <sched.h>
> +#include <stdlib.h>
> +#include <unistd.h>
> +#include "test.h"
Please don't use legacy API.

> +
> +#define DEFAULT_USEC	30000
> +
> +int foo(void __attribute__ ((unused)) * arg)
> +{
> +	return 0;
> +}
> +
> +int main(int argc, char **argv)
> +{
> +	int usec;
> +
> +	if (argc == 2)
> +		usec = atoi(argv[1]);
> +	else
> +		usec = DEFAULT_USEC;
> +
> +	while (1) {
> +		usleep(usec);
> +		ltp_clone_quick(CLONE_NEWNS, foo, NULL);
> +	}
> +
> +	tst_exit();
> +}

...

> +++ b/testcases/kernel/controllers/cgroup/getdelays.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
>  /* getdelays.c

There is build warning, can you please fix it:

getdelays.c: In function ‘get_family_id’:
getdelays.c:177:14: warning: variable ‘rc’ set but not used [-Wunused-but-set-variable]
  int id = 0, rc;
              ^~
getdelays.c: In function ‘main’:
getdelays.c:418:7: warning: variable ‘i’ set but not used [-Wunused-but-set-variable]
   int i;
       ^

Kind regards,
Petr