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-rw-r--r--src/oom/test-oomd-util.c513
1 files changed, 513 insertions, 0 deletions
diff --git a/src/oom/test-oomd-util.c b/src/oom/test-oomd-util.c
new file mode 100644
index 0000000..1aef603
--- /dev/null
+++ b/src/oom/test-oomd-util.c
@@ -0,0 +1,513 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "cgroup-setup.h"
+#include "cgroup-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "oomd-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "tests.h"
+#include "tmpfile-util.h"
+
+static int fork_and_sleep(unsigned sleep_min) {
+ usec_t n, timeout, ts;
+
+ pid_t pid = fork();
+ assert_se(pid >= 0);
+
+ if (pid == 0) {
+ timeout = sleep_min * USEC_PER_MINUTE;
+ ts = now(CLOCK_MONOTONIC);
+ for (;;) {
+ n = now(CLOCK_MONOTONIC);
+ if (ts + timeout < n) {
+ log_error("Child timed out waiting to be killed");
+ abort();
+ }
+ sleep(1);
+ }
+ }
+
+ return pid;
+}
+
+static void test_oomd_cgroup_kill(void) {
+ _cleanup_free_ char *cgroup_root = NULL, *cgroup = NULL;
+ int pid[2];
+ int r;
+
+ if (geteuid() != 0)
+ return (void) log_tests_skipped("not root");
+
+ if (cg_all_unified() <= 0)
+ return (void) log_tests_skipped("cgroups are not running in unified mode");
+
+ assert_se(cg_pid_get_path(NULL, 0, &cgroup_root) >= 0);
+
+ /* Create another cgroup below this one for the pids we forked off. We need this to be managed
+ * by the test so that pid1 doesn't delete it before we can read the xattrs. */
+ cgroup = path_join(cgroup_root, "oomdkilltest");
+ assert_se(cgroup);
+ assert_se(cg_create(SYSTEMD_CGROUP_CONTROLLER, cgroup) >= 0);
+
+ /* If we don't have permissions to set xattrs we're likely in a userns or missing capabilities */
+ r = cg_set_xattr(cgroup, "user.oomd_test", "test", 4, 0);
+ if (ERRNO_IS_PRIVILEGE(r) || ERRNO_IS_NOT_SUPPORTED(r))
+ return (void) log_tests_skipped("Cannot set user xattrs");
+
+ /* Do this twice to also check the increment behavior on the xattrs */
+ for (int i = 0; i < 2; i++) {
+ _cleanup_free_ char *v = NULL;
+
+ for (int j = 0; j < 2; j++) {
+ pid[j] = fork_and_sleep(5);
+ assert_se(cg_attach(SYSTEMD_CGROUP_CONTROLLER, cgroup, pid[j]) >= 0);
+ }
+
+ r = oomd_cgroup_kill(cgroup, false /* recurse */, false /* dry run */);
+ if (r <= 0) {
+ log_debug_errno(r, "Failed to kill processes under %s: %m", cgroup);
+ abort();
+ }
+
+ assert_se(cg_get_xattr_malloc(cgroup, "user.oomd_ooms", &v) >= 0);
+ assert_se(streq(v, i == 0 ? "1" : "2"));
+ v = mfree(v);
+
+ /* Wait a bit since processes may take some time to be cleaned up. */
+ sleep(2);
+ assert_se(cg_is_empty(SYSTEMD_CGROUP_CONTROLLER, cgroup) == true);
+
+ assert_se(cg_get_xattr_malloc(cgroup, "user.oomd_kill", &v) >= 0);
+ assert_se(streq(v, i == 0 ? "2" : "4"));
+ }
+}
+
+static void test_oomd_cgroup_context_acquire_and_insert(void) {
+ _cleanup_hashmap_free_ Hashmap *h1 = NULL, *h2 = NULL;
+ _cleanup_(oomd_cgroup_context_freep) OomdCGroupContext *ctx = NULL;
+ _cleanup_free_ char *cgroup = NULL;
+ OomdCGroupContext *c1, *c2;
+ CGroupMask mask;
+
+ if (geteuid() != 0)
+ return (void) log_tests_skipped("not root");
+
+ if (!is_pressure_supported())
+ return (void) log_tests_skipped("system does not support pressure");
+
+ if (cg_all_unified() <= 0)
+ return (void) log_tests_skipped("cgroups are not running in unified mode");
+
+ assert_se(cg_mask_supported(&mask) >= 0);
+
+ if (!FLAGS_SET(mask, CGROUP_MASK_MEMORY))
+ return (void) log_tests_skipped("cgroup memory controller is not available");
+
+ assert_se(cg_pid_get_path(NULL, 0, &cgroup) >= 0);
+ assert_se(oomd_cgroup_context_acquire(cgroup, &ctx) == 0);
+
+ assert_se(streq(ctx->path, cgroup));
+ assert_se(ctx->current_memory_usage > 0);
+ assert_se(ctx->memory_min == 0);
+ assert_se(ctx->memory_low == 0);
+ assert_se(ctx->swap_usage == 0);
+ assert_se(ctx->last_pgscan == 0);
+ assert_se(ctx->pgscan == 0);
+ ctx = oomd_cgroup_context_free(ctx);
+
+ assert_se(oomd_cgroup_context_acquire("", &ctx) == 0);
+ assert_se(streq(ctx->path, "/"));
+ assert_se(ctx->current_memory_usage > 0);
+
+ /* Test hashmap inserts */
+ assert_se(h1 = hashmap_new(&oomd_cgroup_ctx_hash_ops));
+ assert_se(oomd_insert_cgroup_context(NULL, h1, cgroup) == 0);
+ c1 = hashmap_get(h1, cgroup);
+ assert_se(c1);
+ assert_se(oomd_insert_cgroup_context(NULL, h1, cgroup) == -EEXIST);
+
+ /* make sure certain values from h1 get updated in h2 */
+ c1->pgscan = UINT64_MAX;
+ c1->mem_pressure_limit = 6789;
+ c1->mem_pressure_limit_hit_start = 42;
+ c1->last_had_mem_reclaim = 888;
+ assert_se(h2 = hashmap_new(&oomd_cgroup_ctx_hash_ops));
+ assert_se(oomd_insert_cgroup_context(h1, h2, cgroup) == 0);
+ c1 = hashmap_get(h1, cgroup);
+ c2 = hashmap_get(h2, cgroup);
+ assert_se(c1);
+ assert_se(c2);
+ assert_se(c1 != c2);
+ assert_se(c2->last_pgscan == UINT64_MAX);
+ assert_se(c2->mem_pressure_limit == 6789);
+ assert_se(c2->mem_pressure_limit_hit_start == 42);
+ assert_se(c2->last_had_mem_reclaim == 888); /* assumes the live pgscan is less than UINT64_MAX */
+}
+
+static void test_oomd_update_cgroup_contexts_between_hashmaps(void) {
+ _cleanup_hashmap_free_ Hashmap *h_old = NULL, *h_new = NULL;
+ OomdCGroupContext *c_old, *c_new;
+ char **paths = STRV_MAKE("/0.slice",
+ "/1.slice");
+
+ OomdCGroupContext ctx_old[2] = {
+ { .path = paths[0],
+ .mem_pressure_limit = 5,
+ .mem_pressure_limit_hit_start = 777,
+ .last_had_mem_reclaim = 888,
+ .pgscan = 57 },
+ { .path = paths[1],
+ .mem_pressure_limit = 6,
+ .mem_pressure_limit_hit_start = 888,
+ .last_had_mem_reclaim = 888,
+ .pgscan = 42 },
+ };
+
+ OomdCGroupContext ctx_new[2] = {
+ { .path = paths[0],
+ .pgscan = 57 },
+ { .path = paths[1],
+ .pgscan = 101 },
+ };
+
+ assert_se(h_old = hashmap_new(&string_hash_ops));
+ assert_se(hashmap_put(h_old, paths[0], &ctx_old[0]) >= 0);
+ assert_se(hashmap_put(h_old, paths[1], &ctx_old[1]) >= 0);
+
+ assert_se(h_new = hashmap_new(&string_hash_ops));
+ assert_se(hashmap_put(h_new, paths[0], &ctx_new[0]) >= 0);
+ assert_se(hashmap_put(h_new, paths[1], &ctx_new[1]) >= 0);
+
+ oomd_update_cgroup_contexts_between_hashmaps(h_old, h_new);
+
+ assert_se(c_old = hashmap_get(h_old, "/0.slice"));
+ assert_se(c_new = hashmap_get(h_new, "/0.slice"));
+ assert_se(c_old->pgscan == c_new->last_pgscan);
+ assert_se(c_old->mem_pressure_limit == c_new->mem_pressure_limit);
+ assert_se(c_old->mem_pressure_limit_hit_start == c_new->mem_pressure_limit_hit_start);
+ assert_se(c_old->last_had_mem_reclaim == c_new->last_had_mem_reclaim);
+
+ assert_se(c_old = hashmap_get(h_old, "/1.slice"));
+ assert_se(c_new = hashmap_get(h_new, "/1.slice"));
+ assert_se(c_old->pgscan == c_new->last_pgscan);
+ assert_se(c_old->mem_pressure_limit == c_new->mem_pressure_limit);
+ assert_se(c_old->mem_pressure_limit_hit_start == c_new->mem_pressure_limit_hit_start);
+ assert_se(c_new->last_had_mem_reclaim > c_old->last_had_mem_reclaim);
+}
+
+static void test_oomd_system_context_acquire(void) {
+ _cleanup_(unlink_tempfilep) char path[] = "/tmp/oomdgetsysctxtestXXXXXX";
+ _cleanup_close_ int fd = -EBADF;
+ OomdSystemContext ctx;
+
+ if (geteuid() != 0)
+ return (void) log_tests_skipped("not root");
+
+ assert_se((fd = mkostemp_safe(path)) >= 0);
+
+ assert_se(oomd_system_context_acquire("/verylikelynonexistentpath", &ctx) == -ENOENT);
+
+ assert_se(oomd_system_context_acquire(path, &ctx) == -EINVAL);
+
+ assert_se(write_string_file(path, "some\nwords\nacross\nmultiple\nlines", WRITE_STRING_FILE_CREATE) == 0);
+ assert_se(oomd_system_context_acquire(path, &ctx) == -EINVAL);
+
+ assert_se(write_string_file(path, "MemTotal: 32495256 kB trailing\n"
+ "MemFree: 9880512 kB data\n"
+ "SwapTotal: 8388604 kB is\n"
+ "SwapFree: 7604 kB bad\n", WRITE_STRING_FILE_CREATE) == 0);
+ assert_se(oomd_system_context_acquire(path, &ctx) == -EINVAL);
+
+ assert_se(write_string_file(path, "MemTotal: 32495256 kB\n"
+ "MemFree: 9880512 kB\n"
+ "MemAvailable: 21777088 kB\n"
+ "Buffers: 5968 kB\n"
+ "Cached: 14344796 kB\n"
+ "Unevictable: 740004 kB\n"
+ "Mlocked: 4484 kB\n"
+ "SwapTotal: 8388604 kB\n"
+ "SwapFree: 7604 kB\n", WRITE_STRING_FILE_CREATE) == 0);
+ assert_se(oomd_system_context_acquire(path, &ctx) == 0);
+ assert_se(ctx.mem_total == 33275142144);
+ assert_se(ctx.mem_used == 10975404032);
+ assert_se(ctx.swap_total == 8589930496);
+ assert_se(ctx.swap_used == 8582144000);
+}
+
+static void test_oomd_pressure_above(void) {
+ _cleanup_hashmap_free_ Hashmap *h1 = NULL, *h2 = NULL;
+ _cleanup_set_free_ Set *t1 = NULL, *t2 = NULL, *t3 = NULL;
+ OomdCGroupContext ctx[2] = {}, *c;
+ loadavg_t threshold;
+
+ assert_se(store_loadavg_fixed_point(80, 0, &threshold) == 0);
+
+ /* /herp.slice */
+ assert_se(store_loadavg_fixed_point(99, 99, &(ctx[0].memory_pressure.avg10)) == 0);
+ assert_se(store_loadavg_fixed_point(99, 99, &(ctx[0].memory_pressure.avg60)) == 0);
+ assert_se(store_loadavg_fixed_point(99, 99, &(ctx[0].memory_pressure.avg300)) == 0);
+ ctx[0].mem_pressure_limit = threshold;
+
+ /* /derp.slice */
+ assert_se(store_loadavg_fixed_point(1, 11, &(ctx[1].memory_pressure.avg10)) == 0);
+ assert_se(store_loadavg_fixed_point(1, 11, &(ctx[1].memory_pressure.avg60)) == 0);
+ assert_se(store_loadavg_fixed_point(1, 11, &(ctx[1].memory_pressure.avg300)) == 0);
+ ctx[1].mem_pressure_limit = threshold;
+
+ /* High memory pressure */
+ assert_se(h1 = hashmap_new(&string_hash_ops));
+ assert_se(hashmap_put(h1, "/herp.slice", &ctx[0]) >= 0);
+ assert_se(oomd_pressure_above(h1, 0 /* duration */, &t1) == 1);
+ assert_se(set_contains(t1, &ctx[0]));
+ assert_se(c = hashmap_get(h1, "/herp.slice"));
+ assert_se(c->mem_pressure_limit_hit_start > 0);
+
+ /* Low memory pressure */
+ assert_se(h2 = hashmap_new(&string_hash_ops));
+ assert_se(hashmap_put(h2, "/derp.slice", &ctx[1]) >= 0);
+ assert_se(oomd_pressure_above(h2, 0 /* duration */, &t2) == 0);
+ assert_se(!t2);
+ assert_se(c = hashmap_get(h2, "/derp.slice"));
+ assert_se(c->mem_pressure_limit_hit_start == 0);
+
+ /* High memory pressure w/ multiple cgroups */
+ assert_se(hashmap_put(h1, "/derp.slice", &ctx[1]) >= 0);
+ assert_se(oomd_pressure_above(h1, 0 /* duration */, &t3) == 1);
+ assert_se(set_contains(t3, &ctx[0]));
+ assert_se(set_size(t3) == 1);
+ assert_se(c = hashmap_get(h1, "/herp.slice"));
+ assert_se(c->mem_pressure_limit_hit_start > 0);
+ assert_se(c = hashmap_get(h1, "/derp.slice"));
+ assert_se(c->mem_pressure_limit_hit_start == 0);
+}
+
+static void test_oomd_mem_and_swap_free_below(void) {
+ OomdSystemContext ctx = (OomdSystemContext) {
+ .mem_total = UINT64_C(20971512) * 1024U,
+ .mem_used = UINT64_C(3310136) * 1024U,
+ .swap_total = UINT64_C(20971512) * 1024U,
+ .swap_used = UINT64_C(20971440) * 1024U,
+ };
+ assert_se(oomd_mem_available_below(&ctx, 2000) == false);
+ assert_se(oomd_swap_free_below(&ctx, 2000) == true);
+
+ ctx = (OomdSystemContext) {
+ .mem_total = UINT64_C(20971512) * 1024U,
+ .mem_used = UINT64_C(20971440) * 1024U,
+ .swap_total = UINT64_C(20971512) * 1024U,
+ .swap_used = UINT64_C(3310136) * 1024U,
+ };
+ assert_se(oomd_mem_available_below(&ctx, 2000) == true);
+ assert_se(oomd_swap_free_below(&ctx, 2000) == false);
+
+ ctx = (OomdSystemContext) {
+ .mem_total = 0,
+ .mem_used = 0,
+ .swap_total = 0,
+ .swap_used = 0,
+ };
+ assert_se(oomd_mem_available_below(&ctx, 2000) == false);
+ assert_se(oomd_swap_free_below(&ctx, 2000) == false);
+}
+
+static void test_oomd_sort_cgroups(void) {
+ _cleanup_hashmap_free_ Hashmap *h = NULL;
+ _cleanup_free_ OomdCGroupContext **sorted_cgroups;
+ char **paths = STRV_MAKE("/herp.slice",
+ "/herp.slice/derp.scope",
+ "/herp.slice/derp.scope/sheep.service",
+ "/zupa.slice",
+ "/boop.slice",
+ "/omitted.slice",
+ "/avoid.slice");
+
+ OomdCGroupContext ctx[7] = {
+ { .path = paths[0],
+ .swap_usage = 20,
+ .last_pgscan = 0,
+ .pgscan = 33,
+ .current_memory_usage = 10 },
+ { .path = paths[1],
+ .swap_usage = 60,
+ .last_pgscan = 33,
+ .pgscan = 1,
+ .current_memory_usage = 20 },
+ { .path = paths[2],
+ .swap_usage = 40,
+ .last_pgscan = 1,
+ .pgscan = 33,
+ .current_memory_usage = 40 },
+ { .path = paths[3],
+ .swap_usage = 10,
+ .last_pgscan = 33,
+ .pgscan = 2,
+ .current_memory_usage = 10 },
+ { .path = paths[4],
+ .swap_usage = 11,
+ .last_pgscan = 33,
+ .pgscan = 33,
+ .current_memory_usage = 10 },
+ { .path = paths[5],
+ .swap_usage = 90,
+ .last_pgscan = 0,
+ .pgscan = UINT64_MAX,
+ .preference = MANAGED_OOM_PREFERENCE_OMIT },
+ { .path = paths[6],
+ .swap_usage = 99,
+ .last_pgscan = 0,
+ .pgscan = UINT64_MAX,
+ .preference = MANAGED_OOM_PREFERENCE_AVOID },
+ };
+
+ assert_se(h = hashmap_new(&string_hash_ops));
+
+ assert_se(hashmap_put(h, "/herp.slice", &ctx[0]) >= 0);
+ assert_se(hashmap_put(h, "/herp.slice/derp.scope", &ctx[1]) >= 0);
+ assert_se(hashmap_put(h, "/herp.slice/derp.scope/sheep.service", &ctx[2]) >= 0);
+ assert_se(hashmap_put(h, "/zupa.slice", &ctx[3]) >= 0);
+ assert_se(hashmap_put(h, "/boop.slice", &ctx[4]) >= 0);
+ assert_se(hashmap_put(h, "/omitted.slice", &ctx[5]) >= 0);
+ assert_se(hashmap_put(h, "/avoid.slice", &ctx[6]) >= 0);
+
+ assert_se(oomd_sort_cgroup_contexts(h, compare_swap_usage, NULL, &sorted_cgroups) == 6);
+ assert_se(sorted_cgroups[0] == &ctx[1]);
+ assert_se(sorted_cgroups[1] == &ctx[2]);
+ assert_se(sorted_cgroups[2] == &ctx[0]);
+ assert_se(sorted_cgroups[3] == &ctx[4]);
+ assert_se(sorted_cgroups[4] == &ctx[3]);
+ assert_se(sorted_cgroups[5] == &ctx[6]);
+ sorted_cgroups = mfree(sorted_cgroups);
+
+ assert_se(oomd_sort_cgroup_contexts(h, compare_pgscan_rate_and_memory_usage, NULL, &sorted_cgroups) == 6);
+ assert_se(sorted_cgroups[0] == &ctx[0]);
+ assert_se(sorted_cgroups[1] == &ctx[2]);
+ assert_se(sorted_cgroups[2] == &ctx[3]);
+ assert_se(sorted_cgroups[3] == &ctx[1]);
+ assert_se(sorted_cgroups[4] == &ctx[4]);
+ assert_se(sorted_cgroups[5] == &ctx[6]);
+ sorted_cgroups = mfree(sorted_cgroups);
+
+ assert_se(oomd_sort_cgroup_contexts(h, compare_pgscan_rate_and_memory_usage, "/herp.slice/derp.scope", &sorted_cgroups) == 2);
+ assert_se(sorted_cgroups[0] == &ctx[2]);
+ assert_se(sorted_cgroups[1] == &ctx[1]);
+ assert_se(sorted_cgroups[2] == 0);
+ assert_se(sorted_cgroups[3] == 0);
+ assert_se(sorted_cgroups[4] == 0);
+ assert_se(sorted_cgroups[5] == 0);
+ assert_se(sorted_cgroups[6] == 0);
+ sorted_cgroups = mfree(sorted_cgroups);
+}
+
+static void test_oomd_fetch_cgroup_oom_preference(void) {
+ _cleanup_(oomd_cgroup_context_freep) OomdCGroupContext *ctx = NULL;
+ _cleanup_free_ char *cgroup = NULL;
+ ManagedOOMPreference root_pref;
+ CGroupMask mask;
+ bool test_xattrs;
+ int root_xattrs, r;
+
+ if (geteuid() != 0)
+ return (void) log_tests_skipped("not root");
+
+ if (!is_pressure_supported())
+ return (void) log_tests_skipped("system does not support pressure");
+
+ if (cg_all_unified() <= 0)
+ return (void) log_tests_skipped("cgroups are not running in unified mode");
+
+ assert_se(cg_mask_supported(&mask) >= 0);
+
+ if (!FLAGS_SET(mask, CGROUP_MASK_MEMORY))
+ return (void) log_tests_skipped("cgroup memory controller is not available");
+
+ assert_se(cg_pid_get_path(NULL, 0, &cgroup) >= 0);
+ assert_se(oomd_cgroup_context_acquire(cgroup, &ctx) == 0);
+
+ /* If we don't have permissions to set xattrs we're likely in a userns or missing capabilities
+ * so skip the xattr portions of the test. */
+ r = cg_set_xattr(cgroup, "user.oomd_test", "1", 1, 0);
+ test_xattrs = !ERRNO_IS_PRIVILEGE(r) && !ERRNO_IS_NOT_SUPPORTED(r);
+
+ if (test_xattrs) {
+ assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0);
+ assert_se(cg_set_xattr(cgroup, "user.oomd_omit", "1", 1, 0) >= 0);
+ assert_se(cg_set_xattr(cgroup, "user.oomd_avoid", "1", 1, 0) >= 0);
+
+ /* omit takes precedence over avoid when both are set to true */
+ assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0);
+ assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_OMIT);
+ } else {
+ assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) < 0);
+ assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_NONE);
+ }
+ ctx = oomd_cgroup_context_free(ctx);
+
+ /* also check when only avoid is set to true */
+ if (test_xattrs) {
+ assert_se(cg_set_xattr(cgroup, "user.oomd_omit", "0", 1, 0) >= 0);
+ assert_se(cg_set_xattr(cgroup, "user.oomd_avoid", "1", 1, 0) >= 0);
+ assert_se(oomd_cgroup_context_acquire(cgroup, &ctx) == 0);
+ assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0);
+ assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_AVOID);
+ ctx = oomd_cgroup_context_free(ctx);
+ }
+
+ /* Test the root cgroup */
+ /* Root cgroup is live and not made on demand like the cgroup the test runs in. It can have varying
+ * xattrs set already so let's read in the booleans first to get the final preference value. */
+ assert_se(oomd_cgroup_context_acquire("", &ctx) == 0);
+ root_xattrs = cg_get_xattr_bool("", "user.oomd_omit");
+ root_pref = root_xattrs > 0 ? MANAGED_OOM_PREFERENCE_OMIT : MANAGED_OOM_PREFERENCE_NONE;
+ root_xattrs = cg_get_xattr_bool("", "user.oomd_avoid");
+ root_pref = root_xattrs > 0 ? MANAGED_OOM_PREFERENCE_AVOID : MANAGED_OOM_PREFERENCE_NONE;
+ assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0);
+ assert_se(ctx->preference == root_pref);
+
+ assert_se(oomd_fetch_cgroup_oom_preference(ctx, "/herp.slice/derp.scope") == -EINVAL);
+
+ /* Assert that avoid/omit are not set if the cgroup and prefix are not
+ * owned by the same user. */
+ if (test_xattrs && !empty_or_root(cgroup)) {
+ ctx = oomd_cgroup_context_free(ctx);
+ assert_se(cg_set_access(SYSTEMD_CGROUP_CONTROLLER, cgroup, 61183, 0) >= 0);
+ assert_se(oomd_cgroup_context_acquire(cgroup, &ctx) == 0);
+
+ assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0);
+ assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_NONE);
+
+ assert_se(oomd_fetch_cgroup_oom_preference(ctx, ctx->path) == 0);
+ assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_AVOID);
+ }
+}
+
+int main(void) {
+ int r;
+
+ test_setup_logging(LOG_DEBUG);
+
+ test_oomd_update_cgroup_contexts_between_hashmaps();
+ test_oomd_system_context_acquire();
+ test_oomd_pressure_above();
+ test_oomd_mem_and_swap_free_below();
+ test_oomd_sort_cgroups();
+
+ /* The following tests operate on live cgroups */
+
+ r = enter_cgroup_root(NULL);
+ if (r < 0)
+ return log_tests_skipped_errno(r, "failed to enter a test cgroup scope");
+
+ test_oomd_cgroup_kill();
+ test_oomd_cgroup_context_acquire_and_insert();
+ test_oomd_fetch_cgroup_oom_preference();
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-30 09:15:37 +0000