Ingo,
I'm assuming that this was a bug, so I'm patching it. I made it now
test to see if the new process is realtime and higher priority than the
current tracing process to continue.
I'll analyze it more tomorrow (after a few hours of sleep) to see if
this makes sense, as well as hope that you have a comment or two saying
it does, or if it doesn't, to enlighten me to why.
Thanks,
-- Steve
Index: linux-2.6.15-rt15/kernel/latency.c
===================================================================
--- linux-2.6.15-rt15.orig/kernel/latency.c 2006-01-25 17:02:26.000000000 -0500
+++ linux-2.6.15-rt15/kernel/latency.c 2006-01-26 21:03:30.000000000 -0500
@@ -1908,7 +1908,7 @@
return;
spin_lock(&sch.trace_lock);
- if (sch.task && (sch.task->prio >= p->prio))
+ if (sch.task && ((sch.task->prio <= p->prio) || !rt_task(p)))
goto out_unlock;
/*
@@ -1974,7 +1974,7 @@
} else {
if (sch.task)
trace_special_pid(sch.task->pid, sch.task->prio, p->prio);
- if (sch.task && (sch.task->prio >= p->prio))
+ if (sch.task && ((sch.task->prio <= p->prio) || !rt_task(p)))
sch.task = NULL;
spin_unlock(&sch.trace_lock);
}
-
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