1 // SPDX-License-Identifier: GPL-2.0
40 	char *parent = NULL, *child = NULL, *parent2 = NULL, *child2 = NULL;  in test_cpucg_subtree_control()  local
44 	parent = cg_name(root, "cpucg_test_0");  in test_cpucg_subtree_control()
45 	if (!parent)  in test_cpucg_subtree_control()
48 	if (cg_create(parent))  in test_cpucg_subtree_control()
51 	if (cg_write(parent, "cgroup.subtree_control", "+cpu"))  in test_cpucg_subtree_control()
54 	child = cg_name(parent, "cpucg_test_child");  in test_cpucg_subtree_control()
55 	if (!child)  in test_cpucg_subtree_control()
58 	if (cg_create(child))  in test_cpucg_subtree_control()
61 	if (cg_read_strstr(child, "cgroup.controllers", "cpu"))  in test_cpucg_subtree_control()
85 	cg_destroy(child);  in test_cpucg_subtree_control()
86 	free(child);  in test_cpucg_subtree_control()
89 	cg_destroy(parent);  in test_cpucg_subtree_control()
90 	free(parent);  in test_cpucg_subtree_control()
114 	if (lhs->tv_sec < rhs->tv_sec)  in timespec_sub()
117 	ret.tv_sec = lhs->tv_sec - rhs->tv_sec;  in timespec_sub()
119 	if (lhs->tv_nsec < rhs->tv_nsec) {  in timespec_sub()
123 		ret.tv_sec--;  in timespec_sub()
124 		ret.tv_nsec = NSEC_PER_SEC - rhs->tv_nsec + lhs->tv_nsec;  in timespec_sub()
126 		ret.tv_nsec = lhs->tv_nsec - rhs->tv_nsec;  in timespec_sub()
135 	struct timespec ts_run = param->ts;  in hog_cpus_timed()
144 	for (i = 0; i < param->nprocs; i++) {  in hog_cpus_timed()
159 		if (param->clock_type == CPU_HOG_CLOCK_PROCESS) {  in hog_cpus_timed()
235 		pid_t (*spawn_child)(const struct cpu_hogger *child),  in run_cpucg_weight_test()  argument
239 	char *parent = NULL;  in run_cpucg_weight_test()  local
242 	parent = cg_name(root, "cpucg_test_0");  in run_cpucg_weight_test()
243 	if (!parent)  in run_cpucg_weight_test()
246 	if (cg_create(parent))  in run_cpucg_weight_test()
249 	if (cg_write(parent, "cgroup.subtree_control", "+cpu"))  in run_cpucg_weight_test()
253 		children[i].cgroup = cg_name_indexed(parent, "cpucg_child", i);  in run_cpucg_weight_test()
295 	cg_destroy(parent);  in run_cpucg_weight_test()
296 	free(parent);  in run_cpucg_weight_test()
301 static pid_t weight_hog_ncpus(const struct cpu_hogger *child, int ncpus)  in weight_hog_ncpus()  argument
312 	return cg_run_nowait(child->cgroup, hog_cpus_timed, (void *)&param);  in weight_hog_ncpus()
315 static pid_t weight_hog_all_cpus(const struct cpu_hogger *child)  in weight_hog_all_cpus()  argument
317 	return weight_hog_ncpus(child, get_nprocs());  in weight_hog_all_cpus()
325 	for (i = 0; i < num_children - 1; i++) {  in overprovision_validate()
331 		delta = children[i + 1].usage - children[i].usage;  in overprovision_validate()
348  * A separate process is then created for each child cgroup which spawns as
352  * Once all of the children have exited, we verify that each child cgroup
361 static pid_t weight_hog_one_cpu(const struct cpu_hogger *child)  in weight_hog_one_cpu()  argument
363 	return weight_hog_ncpus(child, 1);  in weight_hog_one_cpu()
371 	for (i = 0; i < num_children - 1; i++) {  in underprovision_validate()
388  * A separate process is then created for each child cgroup which spawns a
390  * have at least one core per-thread in the child processes.
392  * Once all of the children have exited, we verify that each child cgroup
410 	char *parent = NULL, *child = NULL;  in run_cpucg_nested_weight_test()  local
425 	parent = cg_name(root, "cpucg_test");  in run_cpucg_nested_weight_test()
426 	child = cg_name(parent, "cpucg_child");  in run_cpucg_nested_weight_test()
427 	if (!parent || !child)  in run_cpucg_nested_weight_test()
430 	if (cg_create(parent))  in run_cpucg_nested_weight_test()
432 	if (cg_write(parent, "cgroup.subtree_control", "+cpu"))  in run_cpucg_nested_weight_test()
435 	if (cg_create(child))  in run_cpucg_nested_weight_test()
437 	if (cg_write(child, "cgroup.subtree_control", "+cpu"))  in run_cpucg_nested_weight_test()
439 	if (cg_write(child, "cpu.weight", "1000"))  in run_cpucg_nested_weight_test()
447 			ancestor = parent;  in run_cpucg_nested_weight_test()
450 			ancestor = child;  in run_cpucg_nested_weight_test()
507 	child_usage = cg_read_key_long(child, "cpu.stat", "usage_usec");  in run_cpucg_nested_weight_test()
519 	cg_destroy(child);  in run_cpucg_nested_weight_test()
520 	free(child);  in run_cpucg_nested_weight_test()
521 	cg_destroy(parent);  in run_cpucg_nested_weight_test()
522 	free(parent);  in run_cpucg_nested_weight_test()
621  * This test verifies that a process inside of a nested cgroup whose parent
630 	char *parent, *child;  in test_cpucg_max_nested()  local
632 	parent = cg_name(root, "cpucg_parent");  in test_cpucg_max_nested()
633 	child = cg_name(parent, "cpucg_child");  in test_cpucg_max_nested()
634 	if (!parent || !child)  in test_cpucg_max_nested()
637 	if (cg_create(parent))  in test_cpucg_max_nested()
640 	if (cg_write(parent, "cgroup.subtree_control", "+cpu"))  in test_cpucg_max_nested()
643 	if (cg_create(child))  in test_cpucg_max_nested()
646 	if (cg_write(parent, "cpu.max", "1000"))  in test_cpucg_max_nested()
657 	if (cg_run(child, hog_cpus_timed, (void *)&param))  in test_cpucg_max_nested()
660 	usage_usec = cg_read_key_long(child, "cpu.stat", "usage_usec");  in test_cpucg_max_nested()
661 	user_usec = cg_read_key_long(child, "cpu.stat", "user_usec");  in test_cpucg_max_nested()
674 	cg_destroy(child);  in test_cpucg_max_nested()
675 	free(child);  in test_cpucg_max_nested()
676 	cg_destroy(parent);  in test_cpucg_max_nested()
677 	free(parent);  in test_cpucg_max_nested()