Module: xenomai-forge
Branch: next
Commit: 0cc962d5dbdfc5449a54bba8abcd3e11d5b7f3dc
URL:
http://git.xenomai.org/?p=xenomai-forge.git;a=commit;h=0cc962d5dbdfc5449a54bba8abcd3e11d5b7f3dc
Author: Philippe Gerum <r...@xenomai.org>
Date: Sat Dec 14 12:17:23 2013 +0100
cobalt/thread: demote thread upon cancellation request
A thread which is sent a cancellation request might be held internally
by the scheduling policy it undergoes, in a way that would prevent it
from waking up for exiting. Typically, a SCHED_QUOTA thread with no
runtime budget at the time of the request would be prevented from
exiting.
To address this issue, we demote threads receiving a cancellation
request, which implies switching them out of primary mode, and moving
to the weak scheduling class, where it cannot be held.
---
kernel/cobalt/thread.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/cobalt/thread.c b/kernel/cobalt/thread.c
index d05482f..5bf8f39 100644
--- a/kernel/cobalt/thread.c
+++ b/kernel/cobalt/thread.c
@@ -1535,7 +1535,7 @@ check_self_cancel:
return;
}
- __xnshadow_kick(thread);
+ __xnshadow_demote(thread);
xnsched_run();
unlock_and_exit:
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