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When we are spilling threads out of the run queue during panic, make sure we

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keep the thread state variable consistent with its real state.
i.e. Don't say it's on the run queue when it isn't.

Also clarify the associated comment.

Turns a double panic back to a single panic :-/

Approved by:	re@ (jhb)
This commit is contained in:
Julian Elischer 2003-05-21 18:53:25 +00:00
parent 67fd2837cd
commit faaa20f639
1 changed files with 6 additions and 3 deletions
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9
sys/kern/kern_switch.c
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@ -162,12 +162,15 @@ choosethread(void)
ke->ke_flags |= KEF_DIDRUN;
/*
* Only allow non system threads to run in panic
* if they are the one we are tracing. (I think.. [JRE])
* If we are in panic, only allow system threads,
* plus the one we are running in, to be run.
*/
if (panicstr && ((td->td_proc->p_flag & P_SYSTEM) == 0 &&
(td->td_flags & TDF_INPANIC) == 0))
(td->td_flags & TDF_INPANIC) == 0)) {
/* note that it is no longer on the run queue */
TD_SET_CAN_RUN(td);
goto retry;
}
TD_SET_RUNNING(td);
return (td);