selftests/cgroup/test_memcontrol.c

170 	char *memcg;
172 	memcg = cg_name(root, "memcg_test");
173 	if (!memcg)
176 	if (cg_create(memcg))
179 	current = cg_read_long(memcg, "memory.current");
183 	if (cg_run(memcg, alloc_anon_50M_check, NULL))
186 	if (cg_run(memcg, alloc_pagecache_50M_check, NULL))
192 	cg_destroy(memcg);
193 	free(memcg);
251 static bool reclaim_until(const char *memcg, long goal);
285  * (a) We ignore the protection of the reclaim target memcg.
503 	char *memcg;
506 	memcg = cg_name(root, "memcg_test");
507 	if (!memcg)
510 	if (cg_create(memcg))
513 	if (cg_read_strcmp(memcg, "memory.high", "max\n"))
516 	if (cg_write(memcg, "memory.swap.max", "0"))
519 	if (cg_write(memcg, "memory.high", "30M"))
522 	if (cg_run(memcg, alloc_anon, (void *)MB(31)))
525 	if (!cg_run(memcg, alloc_pagecache_50M_check, NULL))
528 	if (cg_run(memcg, alloc_pagecache_max_30M, NULL))
531 	high = cg_read_key_long(memcg, "memory.events", "high ");
538 	cg_destroy(memcg);
539 	free(memcg);
566 	char *memcg;
570 	memcg = cg_name(root, "memcg_test");
571 	if (!memcg)
574 	if (cg_create(memcg))
577 	pre_high = cg_read_key_long(memcg, "memory.events", "high ");
578 	pre_max = cg_read_key_long(memcg, "memory.events", "max ");
582 	if (cg_write(memcg, "memory.swap.max", "0"))
585 	if (cg_write(memcg, "memory.high", "30M"))
588 	if (cg_write(memcg, "memory.max", "140M"))
591 	fd = memcg_prepare_for_wait(memcg);
595 	pid = cg_run_nowait(memcg, alloc_anon_mlock, (void *)MB(200));
601 	post_high = cg_read_key_long(memcg, "memory.events", "high ");
602 	post_max = cg_read_key_long(memcg, "memory.events", "max ");
614 	cg_destroy(memcg);
615 	free(memcg);
628 	char *memcg;
631 	memcg = cg_name(root, "memcg_test");
632 	if (!memcg)
635 	if (cg_create(memcg))
638 	if (cg_read_strcmp(memcg, "memory.max", "max\n"))
641 	if (cg_write(memcg, "memory.swap.max", "0"))
644 	if (cg_write(memcg, "memory.max", "30M"))
648 	if (!cg_run(memcg, alloc_anon, (void *)MB(100)))
651 	if (cg_run(memcg, alloc_pagecache_max_30M, NULL))
654 	current = cg_read_long(memcg, "memory.current");
658 	max = cg_read_key_long(memcg, "memory.events", "max ");
665 	cg_destroy(memcg);
666 	free(memcg);
672  * Reclaim from @memcg until usage reaches @goal by writing to
686 static bool reclaim_until(const char *memcg, long goal)
694 		current = cg_read_long(memcg, "memory.current");
704 		err = cg_write(memcg, "memory.reclaim", buf);
720 	char *memcg;
723 	memcg = cg_name(root, "memcg_test");
724 	if (!memcg)
727 	if (cg_create(memcg))
730 	current = cg_read_long(memcg, "memory.current");
738 	cg_run_nowait(memcg, alloc_pagecache_50M_noexit, (void *)(long)fd);
745 		cg_run_nowait(memcg, alloc_anon_noexit, (void *) MB(50));
755 	while (!values_close(cg_read_long(memcg, "memory.current"),
762 				"failed to allocate %ld for memcg reclaim test\n",
772 	if (!reclaim_until(memcg, MB(30)))
777 	cg_destroy(memcg);
778 	free(memcg);
823 	char *memcg;
829 	memcg = cg_name(root, "memcg_test");
830 	if (!memcg)
833 	if (cg_create(memcg))
836 	if (cg_read_long(memcg, "memory.swap.current")) {
841 	if (cg_read_strcmp(memcg, "memory.max", "max\n"))
844 	if (cg_read_strcmp(memcg, "memory.swap.max", "max\n"))
847 	if (cg_write(memcg, "memory.swap.max", "30M"))
850 	if (cg_write(memcg, "memory.max", "30M"))
854 	if (!cg_run(memcg, alloc_anon, (void *)MB(100)))
857 	if (cg_read_key_long(memcg, "memory.events", "oom ") != 1)
860 	if (cg_read_key_long(memcg, "memory.events", "oom_kill ") != 1)
863 	if (cg_run(memcg, alloc_anon_50M_check_swap, (void *)MB(30)))
866 	max = cg_read_key_long(memcg, "memory.events", "max ");
873 	cg_destroy(memcg);
874 	free(memcg);
887 	char *memcg;
889 	memcg = cg_name(root, "memcg_test");
890 	if (!memcg)
893 	if (cg_create(memcg))
896 	if (cg_write(memcg, "memory.max", "30M"))
899 	if (cg_write(memcg, "memory.swap.max", "0"))
902 	if (!cg_run(memcg, alloc_anon, (void *)MB(100)))
905 	if (cg_read_strcmp(memcg, "cgroup.procs", ""))
908 	if (cg_read_key_long(memcg, "memory.events", "oom ") != 1)
911 	if (cg_read_key_long(memcg, "memory.events", "oom_kill ") != 1)
917 	cg_destroy(memcg);
918 	free(memcg);
1048 	char *memcg;
1050 	memcg = cg_name(root, "memcg_test");
1051 	if (!memcg)
1054 	if (cg_create(memcg))
1065 		pid = cg_run_nowait(memcg, tcp_server, &args);
1087 	if (tcp_client(memcg, port) != KSFT_PASS)
1094 	if (cg_read_long(memcg, "memory.current") < 0)
1097 	if (cg_read_key_long(memcg, "memory.stat", "sock "))
1103 	cg_destroy(memcg);
1104 	free(memcg);
1246 	char *memcg;
1249 	memcg = cg_name(root, "memcg_test_0");
1251 	if (!memcg)
1254 	if (cg_create(memcg))
1257 	if (cg_write(memcg, "memory.max", "50M"))
1260 	if (cg_write(memcg, "memory.swap.max", "0"))
1263 	if (cg_write(memcg, "memory.oom.group", "1"))
1266 	safe_pid = cg_run_nowait(memcg, alloc_anon_noexit, (void *) MB(1));
1270 	cg_run_nowait(memcg, alloc_anon_noexit, (void *) MB(1));
1271 	if (!cg_run(memcg, alloc_anon, (void *)MB(100)))
1274 	if (cg_read_key_long(memcg, "memory.events", "oom_kill ") != 3)
1283 	if (memcg)
1284 		cg_destroy(memcg);
1285 	free(memcg);