diff options
| -rw-r--r-- | mm/oom_kill.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 2830b1c6483e..30a60991173a 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -410,6 +410,8 @@ static DECLARE_WAIT_QUEUE_HEAD(oom_victims_wait); bool oom_killer_disabled __read_mostly; +#define K(x) ((x) << (PAGE_SHIFT-10)) + #ifdef CONFIG_MMU /* * OOM Reaper kernel thread which tries to reap the memory used by the OOM @@ -479,6 +481,11 @@ static bool __oom_reap_task(struct task_struct *tsk) &details); } tlb_finish_mmu(&tlb, 0, -1); + pr_info("oom_reaper: reaped process %d (%s), now anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB\n", + task_pid_nr(tsk), tsk->comm, + K(get_mm_counter(mm, MM_ANONPAGES)), + K(get_mm_counter(mm, MM_FILEPAGES)), + K(get_mm_counter(mm, MM_SHMEMPAGES))); up_read(&mm->mmap_sem); /* @@ -495,14 +502,21 @@ out: return ret; } +#define MAX_OOM_REAP_RETRIES 10 static void oom_reap_task(struct task_struct *tsk) { int attempts = 0; /* Retry the down_read_trylock(mmap_sem) a few times */ - while (attempts++ < 10 && !__oom_reap_task(tsk)) + while (attempts++ < MAX_OOM_REAP_RETRIES && !__oom_reap_task(tsk)) schedule_timeout_idle(HZ/10); + if (attempts > MAX_OOM_REAP_RETRIES) { + pr_info("oom_reaper: unable to reap pid:%d (%s)\n", + task_pid_nr(tsk), tsk->comm); + debug_show_all_locks(); + } + /* Drop a reference taken by wake_oom_reaper */ put_task_struct(tsk); } @@ -649,7 +663,6 @@ static bool process_shares_mm(struct task_struct *p, struct mm_struct *mm) return false; } -#define K(x) ((x) << (PAGE_SHIFT-10)) /* * Must be called while holding a reference to p, which will be released upon * returning. |