From: Dario Faggioli <raist...@linux.it> Add a new function to the scheduling class interface. It is called at the end of a context switch, if the prev task is in TASK_DEAD state.
It might be useful for the scheduling classes that want to be notified when one of their task dies, e.g. to perform some cleanup actions. Signed-off-by: Dario Faggioli <raist...@linux.it> Signed-off-by: Juri Lelli <juri.le...@gmail.com> --- include/linux/sched.h | 1 + kernel/sched/core.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/include/linux/sched.h b/include/linux/sched.h index d211247..640c741 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1104,6 +1104,7 @@ struct sched_class { void (*set_curr_task) (struct rq *rq); void (*task_tick) (struct rq *rq, struct task_struct *p, int queued); void (*task_fork) (struct task_struct *p); + void (*task_dead) (struct task_struct *p); void (*switched_from) (struct rq *this_rq, struct task_struct *task); void (*switched_to) (struct rq *this_rq, struct task_struct *task); diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 26058d0..7e99105 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1843,6 +1843,9 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev) if (mm) mmdrop(mm); if (unlikely(prev_state == TASK_DEAD)) { + if (prev->sched_class->task_dead) + prev->sched_class->task_dead(prev); + /* * Remove function-return probe instances associated with this * task and put them back on the free list. -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/