Messages in this thread | | | Date | Tue, 12 Nov 2013 18:53:44 +0100 | From | Juri Lelli <> | Subject | Re: [PATCH 01/14] sched: add sched_class->task_dead. |
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On 11/12/2013 06:19 PM, Steven Rostedt wrote: > On Thu, 7 Nov 2013 14:43:35 +0100 > Juri Lelli <juri.lelli@gmail.com> wrote: > >> From: Dario Faggioli <raistlin@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. > > Nit. s/task/tasks/ >
Amended, thanks!
Best,
- Juri
>> >> Signed-off-by: Dario Faggioli <raistlin@linux.it> >> Signed-off-by: Juri Lelli <juri.lelli@gmail.com> >> --- >> kernel/sched/core.c | 3 +++ >> kernel/sched/sched.h | 1 + >> 2 files changed, 4 insertions(+) >> >> diff --git a/kernel/sched/core.c b/kernel/sched/core.c >> index 5ac63c9..850a02c 100644 >> --- a/kernel/sched/core.c >> +++ b/kernel/sched/core.c >> @@ -1890,6 +1890,9 @@ 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. >> diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h >> index b3c5653..64eda5c 100644 >> --- a/kernel/sched/sched.h >> +++ b/kernel/sched/sched.h >> @@ -992,6 +992,7 @@ 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); >
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