[LTP] [PATCH v5] kill01: New case cgroup kill

[Wei Gao]

On Thu, Mar 09, 2023 at 10:40:46PM +0100, Petr Vorel wrote:
> Hi Wei,
> 
> Closes: https://github.com/linux-test-project/ltp/issues/846
> 
> Test LGTM.
> 
> ...
> > +// SPDX-License-Identifier: GPL-2.0-or-later
> > +/*
> > + * Copyright (c) 2012 Christian Brauner <brauner-AT-kernel.org>
> Is it based on some Christian's reproducer?
> I haven't noticed any in https://lwn.net/Articles/855049/ (linked in #846)
> nor in the patch
> https://lwn.net/ml/cgroups/20210503143922.3093755-1-brauner@kernel.org/.
> But maybe I just overlooked it.
This case base kernel self test, will add more description here.
> 
> > + * Copyright (c) 2023 SUSE LLC <wegao@suse.com>
> > + */
> > +
> > +/*\
> > + * [Description]
> > + *
> > + * Basic cgroup kill test.
> > + *
> > + */
> > +
> > +#include <errno.h>
> > +#include <linux/limits.h>
> > +#include <stdbool.h>
> nit: stdbool.h is not needed (can be removed before merge).
ack
> 
> ...
> > +static void run(void)
> > +{
> > +	pid_t pids[MAX_PID_NUM];
> > +	int i;
> > +
> > +	cg_child_test_simple = tst_cg_group_mk(tst_cg, "cg_test_simple");
> > +
> > +	memset(buf, 0, buf_len);
> > +
> > +	for (i = 0; i < pid_num; i++)
> > +		pids[i] = cg_run_nowait(cg_child_test_simple, child_fn);
> > +
> > +	TST_EXP_PASS(cg_wait_for_proc_count(cg_child_test_simple, pid_num));
> > +	SAFE_CG_PRINTF(cg_child_test_simple, "cgroup.kill", "%d", 1);
> > +
> > +	for (i = 0; i < pid_num; i++) {
> > +		/* wait_for_pid(pids[i]); */
> I guess this comment should be removed before merge.
ack
> > +		TST_EXP_PASS_SILENT(wait_for_pid(pids[i]) == SIGKILL);
> > +	}
> > +
> > +	cg_child_test_simple = tst_cg_group_rm(cg_child_test_simple);
> > +}
> 
> Kind regards,
> Petr