diff options
| -rw-r--r-- | Documentation/sysctl/vm.txt | 7 | ||||
| -rw-r--r-- | mm/oom_kill.c | 11 |
2 files changed, 10 insertions, 8 deletions
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt index 06d662b1c5d5..dcc2a94ae34e 100644 --- a/Documentation/sysctl/vm.txt +++ b/Documentation/sysctl/vm.txt @@ -491,9 +491,10 @@ oom_dump_tasks Enables a system-wide task dump (excluding kernel threads) to be produced when the kernel performs an OOM-killing and includes such -information as pid, uid, tgid, vm size, rss, cpu, oom_adj score, and -name. This is helpful to determine why the OOM killer was invoked -and to identify the rogue task that caused it. +information as pid, uid, tgid, vm size, rss, nr_ptes, swapents, +oom_score_adj score, and name. This is helpful to determine why the +OOM killer was invoked, to identify the rogue task that caused it, +and to determine why the OOM killer chose the task it did to kill. If this is set to zero, this information is suppressed. On very large systems with thousands of tasks it may not be feasible to dump diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 50e74373e855..c82ede69bf3f 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -371,8 +371,8 @@ static struct task_struct *select_bad_process(unsigned int *ppoints, * Dumps the current memory state of all eligible tasks. Tasks not in the same * memcg, not in the same cpuset, or bound to a disjoint set of mempolicy nodes * are not shown. - * State information includes task's pid, uid, tgid, vm size, rss, cpu, oom_adj - * value, oom_score_adj value, and name. + * State information includes task's pid, uid, tgid, vm size, rss, nr_ptes, + * swapents, oom_score_adj value, and name. * * Call with tasklist_lock read-locked. */ @@ -381,7 +381,7 @@ static void dump_tasks(const struct mem_cgroup *memcg, const nodemask_t *nodemas struct task_struct *p; struct task_struct *task; - pr_info("[ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name\n"); + pr_info("[ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name\n"); for_each_process(p) { if (oom_unkillable_task(p, memcg, nodemask)) continue; @@ -396,10 +396,11 @@ static void dump_tasks(const struct mem_cgroup *memcg, const nodemask_t *nodemas continue; } - pr_info("[%5d] %5d %5d %8lu %8lu %3u %3d %5d %s\n", + pr_info("[%5d] %5d %5d %8lu %8lu %7lu %8lu %5d %s\n", task->pid, from_kuid(&init_user_ns, task_uid(task)), task->tgid, task->mm->total_vm, get_mm_rss(task->mm), - task_cpu(task), task->signal->oom_adj, + task->mm->nr_ptes, + get_mm_counter(task->mm, MM_SWAPENTS), task->signal->oom_score_adj, task->comm); task_unlock(task); } |