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Code Issues Releases Wiki Activity

sched: Remove unnecessary variable from schedule_tail() 

Since 565790d28b (sched: Fix balance_callback(), 2020-05-11), there
is no longer a need to reuse the result value of the call to finish_task_switch()
inside schedule_tail(), therefore the variable used to hold that value
(rq) is no longer needed.

Signed-off-by: Edmundo Carmona Antoranz <eantoranz@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210306210739.1370486-1-eantoranz@gmail.com
This commit is contained in:
Edmundo Carmona Antoranz 2021-03-06 15:07:39 -06:00 committed by Peter Zijlstra
parent 1e17fb8edc
commit 13c2235b2b
1 changed files with 1 additions and 3 deletions
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4
kernel/sched/core.c
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@ -4253,8 +4253,6 @@ static struct rq *finish_task_switch(struct task_struct *prev)
asmlinkage __visible void schedule_tail(struct task_struct *prev)
__releases(rq->lock)
{
struct rq *rq;
/*
* New tasks start with FORK_PREEMPT_COUNT, see there and
* finish_task_switch() for details.
@ -4264,7 +4262,7 @@ asmlinkage __visible void schedule_tail(struct task_struct *prev)
* PREEMPT_COUNT kernels).
*/
rq = finish_task_switch(prev);
finish_task_switch(prev);
preempt_enable();
if (current->set_child_tid)