linux-kernel - [PATCH RT] irq_work: Hide access to hirq_work_list in PREEMPT_RT

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Message-ID: <20150312180857.31a0f7d1@gandalf.local.home>
Date:	Thu, 12 Mar 2015 18:08:57 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	LKML <linux-kernel@...r.kernel.org>,
	linux-rt-users <linux-rt-users@...r.kernel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH RT] irq_work: Hide access to hirq_work_list in
 PREEMPT_RT_FULL

The hirq_work_list is only defined when PREEMPT_RT_FULL is configured.
Most access to it is within an #ifdef CONFIG_PREEMPT_RT_FULL, except
for one. Encapsulate that location too.

Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index 0c6491228b17..4b53470bf97b 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -147,7 +147,9 @@ bool irq_work_needs_cpu(void)
 
 	if (llist_empty(raised))
 		if (llist_empty(lazy))
+#ifdef CONFIG_PREEMPT_RT_FULL
 			if (llist_empty(this_cpu_ptr(&hirq_work_list)))
+#endif
 				return false;
 
 	/* All work should have been flushed before going offline */
--
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