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irq: enter_critical_section_wo_note/leave_critical_section_wo_note

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Signed-off-by: hujun5 <hujun5@xiaomi.com>
This commit is contained in:
hujun5 2024-11-25 14:33:59 +08:00
parent aa0aecbd80
commit 86d6a0be6f
2 changed files with 74 additions and 42 deletions
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20
include/nuttx/irq.h
View file

@ -258,9 +258,19 @@ int irqchain_detach(int irq, xcpt_t isr, FAR void *arg);
****************************************************************************/
#ifdef CONFIG_IRQCOUNT
# if (defined(CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION) && \
CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION >= 0) || \
defined(CONFIG_SCHED_INSTRUMENTATION_CSECTION)
irqstate_t enter_critical_section(void) noinstrument_function;
# else
# define enter_critical_section() enter_critical_section_wo_note()
# endif
irqstate_t enter_critical_section_wo_note(void) noinstrument_function;
#else
# define enter_critical_section() up_irq_save()
# define enter_critical_section_wo_note() up_irq_save()
#endif
/****************************************************************************
@ -288,9 +298,19 @@ irqstate_t enter_critical_section(void) noinstrument_function;
****************************************************************************/
#ifdef CONFIG_IRQCOUNT
# if (defined(CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION) && \
CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION >= 0) || \
defined(CONFIG_SCHED_INSTRUMENTATION_CSECTION)
void leave_critical_section(irqstate_t flags) noinstrument_function;
# else
# define leave_critical_section(f) leave_critical_section_wo_note(f)
# endif
void leave_critical_section_wo_note(irqstate_t flags) noinstrument_function;
#else
# define leave_critical_section(f) up_irq_restore(f)
# define leave_critical_section_wo_note(f) up_irq_restore(f)
#endif
/****************************************************************************

86
sched/irq/irq_csection.c
View file

@ -80,7 +80,7 @@ volatile uint8_t g_cpu_nestcount[CONFIG_SMP_NCPUS];
****************************************************************************/
/****************************************************************************
* Name: enter_critical_section
* Name: enter_critical_section_wo_note
*
* Description:
* Take the CPU IRQ lock and disable interrupts on all CPUs. A thread-
@ -90,7 +90,7 @@ volatile uint8_t g_cpu_nestcount[CONFIG_SMP_NCPUS];
****************************************************************************/
#ifdef CONFIG_SMP
irqstate_t enter_critical_section(void)
irqstate_t enter_critical_section_wo_note(void)
{
FAR struct tcb_s *rtcb;
irqstate_t ret;
@ -246,15 +246,6 @@ irqstate_t enter_critical_section(void)
cpu_irqlock_set(cpu);
rtcb->irqcount = 1;
/* Note that we have entered the critical section */
#if CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION >= 0
nxsched_critmon_csection(rtcb, true, return_address(0));
#endif
#ifdef CONFIG_SCHED_INSTRUMENTATION_CSECTION
sched_note_csection(rtcb, true);
#endif
}
}
@ -265,7 +256,7 @@ irqstate_t enter_critical_section(void)
#else
irqstate_t enter_critical_section(void)
irqstate_t enter_critical_section_wo_note(void)
{
irqstate_t ret;
@ -285,10 +276,28 @@ irqstate_t enter_critical_section(void)
*/
DEBUGASSERT(rtcb->irqcount >= 0 && rtcb->irqcount < INT16_MAX);
if (++rtcb->irqcount == 1)
{
/* Note that we have entered the critical section */
rtcb->irqcount++;
}
/* Return interrupt status */
return ret;
}
#endif
#if CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION >= 0 ||\
defined(CONFIG_SCHED_INSTRUMENTATION_CSECTION)
irqstate_t enter_critical_section(void)
{
FAR struct tcb_s *rtcb;
irqstate_t flags;
flags = enter_critical_section_wo_note();
if (!up_interrupt_context())
{
rtcb = this_task();
if (rtcb->irqcount == 1)
{
#if CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION >= 0
nxsched_critmon_csection(rtcb, true, return_address(0));
#endif
@ -298,14 +307,12 @@ irqstate_t enter_critical_section(void)
}
}
/* Return interrupt status */
return ret;
return flags;
}
#endif
/****************************************************************************
* Name: leave_critical_section
* Name: leave_critical_section_wo_note
*
* Description:
* Decrement the IRQ lock count and if it decrements to zero then release
@ -314,7 +321,7 @@ irqstate_t enter_critical_section(void)
****************************************************************************/
#ifdef CONFIG_SMP
void leave_critical_section(irqstate_t flags)
void leave_critical_section_wo_note(irqstate_t flags)
{
int cpu;
@ -388,14 +395,6 @@ void leave_critical_section(irqstate_t flags)
}
else
{
/* No.. Note that we have left the critical section */
#if CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION >= 0
nxsched_critmon_csection(rtcb, false, return_address(0));
#endif
#ifdef CONFIG_SCHED_INSTRUMENTATION_CSECTION
sched_note_csection(rtcb, false);
#endif
/* Decrement our count on the lock. If all CPUs have
* released, then unlock the spinlock.
*/
@ -421,10 +420,8 @@ void leave_critical_section(irqstate_t flags)
up_irq_restore(flags);
}
#else
void leave_critical_section(irqstate_t flags)
void leave_critical_section_wo_note(irqstate_t flags)
{
/* Check if we were called from an interrupt handler and that the tasks
* lists have been initialized.
@ -440,10 +437,26 @@ void leave_critical_section(irqstate_t flags)
*/
DEBUGASSERT(rtcb->irqcount > 0);
if (--rtcb->irqcount <= 0)
{
/* Note that we have left the critical section */
--rtcb->irqcount;
}
/* Restore the previous interrupt state. */
up_irq_restore(flags);
}
#endif
#if CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION >= 0 ||\
defined(CONFIG_SCHED_INSTRUMENTATION_CSECTION)
void leave_critical_section(irqstate_t flags)
{
FAR struct tcb_s *rtcb;
if (!up_interrupt_context())
{
rtcb = this_task();
if (rtcb->irqcount == 1)
{
# if CONFIG_SCHED_CRITMONITOR_MAXTIME_CSECTION >= 0
nxsched_critmon_csection(rtcb, false, return_address(0));
# endif
@ -453,9 +466,8 @@ void leave_critical_section(irqstate_t flags)
}
}
/* Restore the previous interrupt state. */
up_irq_restore(flags);
leave_critical_section_wo_note(flags);
}
#endif
#endif /* CONFIG_IRQCOUNT */