linux-kernel - [RFC/PATCH 5/3] rt: PI-workqueue: fixup the barrier prio

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Message-Id: <1193055513.27435.179.camel@twins>
Date:	Mon, 22 Oct 2007 14:18:33 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	linux-kernel@...r.kernel.org
Cc:	Daniel Walker <dwalker@...sta.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Gregory Haskins <ghaskins@...ell.com>,
	Oleg Nesterov <oleg@...sign.ru>
Subject: [RFC/PATCH 5/3] rt: PI-workqueue: fixup the barrier prio

Steven is right in that I did over-user normal_prio a bit.
the barriers should use the boosted prio.

---

Index: linux-2.6/kernel/workqueue.c
===================================================================
--- linux-2.6.orig/kernel/workqueue.c
+++ linux-2.6/kernel/workqueue.c
@@ -387,7 +387,7 @@ static void insert_wq_barrier(struct cpu
 
 	init_completion(&barr->done);
 
-	insert_work(cwq, &barr->work, 0, current->normal_prio, tail);
+	insert_work(cwq, &barr->work, 0, current->prio, tail);
 }
 
 static void wq_full_barrier_func(struct work_struct *work)
@@ -418,9 +418,9 @@ static void insert_wq_full_barrier(struc
 	plist_head_splice(&cwq->worklist, &barr->worklist);
 	barr->cwq = cwq;
 	init_completion(&barr->done);
-	barr->waiter_prio = current->normal_prio;
+	barr->waiter_prio = current->prio;
 
-	insert_work(cwq, &barr->work, 0, current->normal_prio, 1);
+	insert_work(cwq, &barr->work, 0, current->prio, 1);
 }
 
 static int flush_cpu_workqueue(struct cpu_workqueue_struct *cwq)


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