Lines Matching full:oc
72 static inline bool is_memcg_oom(struct oom_control *oc)
74 return oc->memcg != NULL;
81 * @oc: pointer to struct oom_control
91 struct oom_control *oc)
95 const nodemask_t *mask = oc->nodemask;
122 static bool oom_cpuset_eligible(struct task_struct *tsk, struct oom_control *oc)
157 static inline bool is_sysrq_oom(struct oom_control *oc)
159 return oc->order == -1;
252 static enum oom_constraint constrained_alloc(struct oom_control *oc)
256 enum zone_type highest_zoneidx = gfp_zone(oc->gfp_mask);
260 if (is_memcg_oom(oc)) {
261 oc->totalpages = mem_cgroup_get_max(oc->memcg) ?: 1;
266 oc->totalpages = totalram_pages() + total_swap_pages;
271 if (!oc->zonelist)
278 if (oc->gfp_mask & __GFP_THISNODE)
286 if (oc->nodemask &&
287 !nodes_subset(node_states[N_MEMORY], *oc->nodemask)) {
288 oc->totalpages = total_swap_pages;
289 for_each_node_mask(nid, *oc->nodemask)
290 oc->totalpages += node_present_pages(nid);
295 for_each_zone_zonelist_nodemask(zone, z, oc->zonelist,
296 highest_zoneidx, oc->nodemask)
297 if (!cpuset_zone_allowed(zone, oc->gfp_mask))
301 oc->totalpages = total_swap_pages;
303 oc->totalpages += node_present_pages(nid);
311 struct oom_control *oc = arg;
318 if (!is_memcg_oom(oc) && !oom_cpuset_eligible(task, oc))
327 if (!is_sysrq_oom(oc) && tsk_is_oom_victim(task)) {
342 points = oom_badness(task, oc->totalpages);
343 if (points == LONG_MIN || points < oc->chosen_points)
347 if (oc->chosen)
348 put_task_struct(oc->chosen);
350 oc->chosen = task;
351 oc->chosen_points = points;
355 if (oc->chosen)
356 put_task_struct(oc->chosen);
357 oc->chosen = (void *)-1UL;
363 * 'points'. In case scan was aborted, oc->chosen is set to -1.
365 static void select_bad_process(struct oom_control *oc)
367 oc->chosen_points = LONG_MIN;
369 if (is_memcg_oom(oc))
370 mem_cgroup_scan_tasks(oc->memcg, oom_evaluate_task, oc);
376 if (oom_evaluate_task(p, oc))
384 struct oom_control *oc = arg;
391 if (!is_memcg_oom(oc) && !oom_cpuset_eligible(p, oc))
417 * @oc: pointer to struct oom_control
425 static void dump_tasks(struct oom_control *oc)
430 if (is_memcg_oom(oc))
431 mem_cgroup_scan_tasks(oc->memcg, dump_task, oc);
441 dump_task(p, oc);
447 static void dump_oom_victim(struct oom_control *oc, struct task_struct *victim)
451 oom_constraint_text[oc->constraint],
452 nodemask_pr_args(oc->nodemask));
454 mem_cgroup_print_oom_context(oc->memcg, victim);
459 static void dump_header(struct oom_control *oc)
462 current->comm, oc->gfp_mask, &oc->gfp_mask, oc->order,
464 if (!IS_ENABLED(CONFIG_COMPACTION) && oc->order)
468 if (is_memcg_oom(oc))
469 mem_cgroup_print_oom_meminfo(oc->memcg);
471 __show_mem(SHOW_MEM_FILTER_NODES, oc->nodemask, gfp_zone(oc->gfp_mask));
476 dump_tasks(oc);
1017 static void oom_kill_process(struct oom_control *oc, const char *message)
1019 struct task_struct *victim = oc->chosen;
1040 dump_header(oc);
1041 dump_oom_victim(oc, victim);
1049 oom_group = mem_cgroup_get_oom_group(victim, oc->memcg);
1068 static void check_panic_on_oom(struct oom_control *oc)
1078 if (oc->constraint != CONSTRAINT_NONE)
1082 if (is_sysrq_oom(oc))
1084 dump_header(oc);
1105 * @oc: pointer to struct oom_control
1112 bool out_of_memory(struct oom_control *oc)
1119 if (!is_memcg_oom(oc)) {
1121 if (freed > 0 && !is_sysrq_oom(oc))
1142 if (!(oc->gfp_mask & __GFP_FS) && !is_memcg_oom(oc))
1149 oc->constraint = constrained_alloc(oc);
1150 if (oc->constraint != CONSTRAINT_MEMORY_POLICY)
1151 oc->nodemask = NULL;
1152 check_panic_on_oom(oc);
1154 if (!is_memcg_oom(oc) && sysctl_oom_kill_allocating_task &&
1156 oom_cpuset_eligible(current, oc) &&
1159 oc->chosen = current;
1160 oom_kill_process(oc, "Out of memory (oom_kill_allocating_task)");
1164 select_bad_process(oc);
1166 if (!oc->chosen) {
1167 dump_header(oc);
1174 if (!is_sysrq_oom(oc) && !is_memcg_oom(oc))
1177 if (oc->chosen && oc->chosen != (void *)-1UL)
1178 oom_kill_process(oc, !is_memcg_oom(oc) ? "Out of memory" :
1180 return !!oc->chosen;