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spinlock+sched_lock #14578

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spinlock+sched_lock #14578

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Commits on Nov 4, 2024

  1. sched: remove csection and reduce the interrupt disabling time in sch… 

    …ed_[un]lock

reason:
1 Accelerated the implementation of sched_lock, remove enter_critical_section in sched_lock and
  only enter_critical_section when task scheduling is required.
2 we add sched_lock_wo_note/sched_unlock_wo_note and it does not perform instrumentation logic

Signed-off-by: hujun5 <[email protected]>
    @hujun260
    hujun260 committed Nov 4, 2024
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  2. spinlock: improve spin_lock_irqsave_wo_note realtime performance 

    reason:
allow the spin_lock_irqsave_wo_note to respond interrupts during the test set loop and improve RT performance

Signed-off-by: hujun5 <[email protected]>
    @hujun260
    hujun260 committed Nov 4, 2024
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  3. spinlock: add sched_lock to spin_lock_irqsave_wo_note 

    reason:
We aim to replace big locks with smaller ones. So we will use spin_lock_irqsave extensively to
replace enter_critical_section in the subsequent process. We imitate the implementation of Linux
by adding sched_lock to spin_lock_irqsave in order to address scenarios where sem_post occurs
within spin_lock_irqsave, which can lead to spinlock failures and deadlocks.

Signed-off-by: hujun5 <[email protected]>
    @hujun260
    hujun260 committed Nov 4, 2024
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