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hv: fix deadloop in sleep_thread_sync 

As we only set BLOCKED status in context switch_out, which means, only
running thread can be changed to BLOCKED, but runnable thread can not.
This lead to the deadloop in sleep_thread_sync.

To solve the problem, in sleep_thread, we set the status to BLOCKED
directly when the original thread status is RUNNABLE.

Tracked-On: #5115
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
This commit is contained in:
Conghui Chen 2020-07-30 11:34:44 +00:00 committed by wenlingz
parent 9251c7bee3
commit 62002d7f7f
1 changed files with 3 additions and 1 deletions
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4
hypervisor/common/schedule.c
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@ -203,8 +203,10 @@ void sleep_thread(struct thread_object *obj)
} else {
make_reschedule_request(pcpu_id, DEL_MODE_IPI);
}
obj->be_blocking = true;
} else {
set_thread_status(obj, THREAD_STS_BLOCKED);
}
obj->be_blocking = true;
release_schedule_lock(pcpu_id, rflag);
}