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From: Dipankar Sarma &lt;dipankar@in.ibm.com&gt;

There is a series of patches in my tree and these 3 are the first ones that
should probably be merged down the road.  Descriptions are on top of the
patches.  Please include them in -mm.

A lot of RCU code will be cleaned up later in order to support
call_rcu_bh(), the separate RCU interface that considers softirq handler
completion a quiescent state.

This patch:

Minor cleanup of the hotplug code to remove #ifdef in cpu event notifier
handler.  If CONFIG_HOTPLUG_CPU is not defined, CPU_DEAD case will be
optimized off.

Signed-off-by: Dipankar Sarma &lt;dipankar@in.ibm.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
---

 25-akpm/kernel/rcupdate.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff -puN kernel/rcupdate.c~rcu-cpu-offline-cleanup kernel/rcupdate.c
--- 25/kernel/rcupdate.c~rcu-cpu-offline-cleanup	2004-07-31 17:20:32.970588528 -0700
+++ 25-akpm/kernel/rcupdate.c	2004-07-31 17:20:32.974587920 -0700
@@ -243,6 +243,12 @@ static void rcu_offline_cpu(int cpu)
 	tasklet_kill_immediate(&amp;RCU_tasklet(cpu), cpu);
 }
 
+#else
+
+static void rcu_offline_cpu(int cpu)
+{
+}
+
 #endif
 
 void rcu_restart_cpu(int cpu)
@@ -326,11 +332,9 @@ static int __devinit rcu_cpu_notify(stru
 	case CPU_UP_PREPARE:
 		rcu_online_cpu(cpu);
 		break;
-#ifdef CONFIG_HOTPLUG_CPU
 	case CPU_DEAD:
 		rcu_offline_cpu(cpu);
 		break;
-#endif
 	default:
 		break;
 	}
_
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