> Actually, the code as rewritten will work from rt space, but shouldn't
> it do a save_flags/restore_flags
Woops, this incremental patch is needed:
Index: include/linux/tqueue.h
===================================================================
RCS file: /var/cvs/linux/include/linux/tqueue.h,v
retrieving revision 1.1.2.2
diff -u -r1.1.2.2 tqueue.h
--- tqueue.h 1999/01/31 02:36:23 1.1.2.2
+++ tqueue.h 1999/01/31 20:33:55
@@ -77,17 +77,20 @@
task_queue *bh_list)
{
if (!test_and_set_bit(0,&bh_pointer->sync)) {
+ unsigned long flags;
+
bh_pointer->sync |= 2;
wmb();
/*
* Disable local interrupt to avoid the CPU to run a nested
* run_task_queue() while bit1 is set. -arca
*/
+ __save_flags(flags);
__cli();
bh_pointer->next = xchg(bh_list,bh_pointer);
clear_bit(1,&bh_pointer->sync); /* see run_task */
wmb();
- __sti();
+ __restore_flags(flags);
}
}
Thanks ;).
Andrea Arcangeli
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