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pthread: remove unused temp change sched_priority

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old:
pthread_create:

init_priority = prio;
if (sched_priority < parent_prio)
    sched_priority = parent_prio;    // don't need

pthread_start:

if (sched_priority > init_priority)
    sched_priority = init_priority

Signed-off-by: ligd <liguiding1@xiaomi.com>
This commit is contained in:
ligd 2023-07-25 12:23:23 +08:00 committed by Xiang Xiao
parent 65c30f9dbd
commit e59f161fc2
1 changed files with 0 additions and 18 deletions
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18
sched/pthread/pthread_create.c
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@ -460,24 +460,6 @@ int nx_pthread_create(pthread_trampoline_t trampoline, FAR pthread_t *thread,
pid = ptcb->cmn.pid;
/* If the priority of the new pthread is lower than the priority of the
* parent thread, then starting the pthread could result in both the
* parent and the pthread to be blocked. This is a recipe for priority
* inversion issues.
*
* We avoid this here by boosting the priority of the (inactive) pthread
* so it has the same priority as the parent thread.
*/
if (ptcb->cmn.sched_priority < parent->sched_priority)
{
ret = nxsched_set_priority(&ptcb->cmn, parent->sched_priority);
if (ret < 0)
{
ret = -ret;
}
}
/* Then activate the task */
sched_lock();