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Diffstat (limited to 'mm/oom_kill.c')
-rw-r--r--mm/oom_kill.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 0e2c925e7826..9e8b4f030c1c 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -490,6 +490,7 @@ static bool __oom_reap_task_mm(struct task_struct *tsk, struct mm_struct *mm)
if (!down_read_trylock(&mm->mmap_sem)) {
ret = false;
+ trace_skip_task_reaping(tsk->pid);
goto unlock_oom;
}
@@ -500,9 +501,12 @@ static bool __oom_reap_task_mm(struct task_struct *tsk, struct mm_struct *mm)
*/
if (!mmget_not_zero(mm)) {
up_read(&mm->mmap_sem);
+ trace_skip_task_reaping(tsk->pid);
goto unlock_oom;
}
+ trace_start_task_reaping(tsk->pid);
+
/*
* Tell all users of get_user/copy_from_user etc... that the content
* is no longer stable. No barriers really needed because unmapping
@@ -544,6 +548,7 @@ static bool __oom_reap_task_mm(struct task_struct *tsk, struct mm_struct *mm)
* put the oom_reaper out of the way.
*/
mmput_async(mm);
+ trace_finish_task_reaping(tsk->pid);
unlock_oom:
mutex_unlock(&oom_lock);
return ret;
@@ -615,6 +620,7 @@ static void wake_oom_reaper(struct task_struct *tsk)
tsk->oom_reaper_list = oom_reaper_list;
oom_reaper_list = tsk;
spin_unlock(&oom_reaper_lock);
+ trace_wake_reaper(tsk->pid);
wake_up(&oom_reaper_wait);
}
@@ -666,6 +672,7 @@ static void mark_oom_victim(struct task_struct *tsk)
*/
__thaw_task(tsk);
atomic_inc(&oom_victims);
+ trace_mark_victim(tsk->pid);
}
/**