[PATCH] powerpc: Define cpus_in_crash only for SMP kernels

From: Paul E. McKenney
Date: Wed Feb 01 2012 - 13:56:21 EST

The variable cpus_in_crash gets a defined-but-not-used warning when
CONFIG_SMP=n, so fix by placing the variable under ifdef.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>

diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 28be345..eb3384e 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -46,7 +46,9 @@

/* This keeps a track of which one is the crashing cpu. */
int crashing_cpu = -1;
+#ifdef CONFIG_SMP
static atomic_t cpus_in_crash;
+#endif /* #ifdef CONFIG_SMP */
static int time_to_dump;


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