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Update some comments

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This commit is contained in:
Gregory Nutt 2017-01-15 12:35:03 -06:00
parent 2837eff0cd
commit a2083fbc92
3 changed files with 15 additions and 3 deletions
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6
arch/arm/src/armv7-a/arm_schedulesigaction.c
View file

@ -274,7 +274,11 @@ void up_schedule_sigaction(struct tcb_s *tcb, sig_deliver_t sigdeliver)
tcb->irqcount++;
/* Handle a possible race condition where the TCB was suspended
* just before we paused the other CPU.
* just before we paused the other CPU. The critical section
* established above will prevent new threads from running on
* that CPU, but it will not guarantee that the running thread
* did not suspend itself (allowing any threads "assigned" to
* the CPU to run).
*/
if (tcb->task_state != TSTATE_TASK_RUNNING)

6
arch/arm/src/armv7-m/up_schedulesigaction.c
View file

@ -310,7 +310,11 @@ void up_schedule_sigaction(struct tcb_s *tcb, sig_deliver_t sigdeliver)
tcb->irqcount++;
/* Handle a possible race condition where the TCB was suspended
* just before we paused the other CPU.
* just before we paused the other CPU. The critical section
* established above will prevent new threads from running on
* that CPU, but it will not guarantee that the running thread
* did not suspend itself (allowing any threads "assigned" to
* the CPU to run).
*/
if (tcb->task_state != TSTATE_TASK_RUNNING)

6
arch/xtensa/src/common/xtensa_schedsigaction.c
View file

@ -283,7 +283,11 @@ void up_schedule_sigaction(struct tcb_s *tcb, sig_deliver_t sigdeliver)
tcb->irqcount++;
/* Handle a possible race condition where the TCB was suspended
* just before we paused the other CPU.
* just before we paused the other CPU. The critical section
* established above will prevent new threads from running on
* that CPU, but it will not guarantee that the running thread
* did not suspend itself (allowing any threads "assigned" to
* the CPU to run).
*/
if (tcb->task_state != TSTATE_TASK_RUNNING)