From: David S. Miller <davem@sunset.davemloft.net>
Date: Fri, 15 Dec 2006 07:40:57 +0000 (-0800)
Subject: [SPARC64]: Mirror x86_64's PERCPU_ENOUGH_ROOM definition.
X-Git-Tag: v2.6.20-rc2~114
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=5a089006bf8b59f6610de11a857854d8f8730658;p=~shefty%2Frdma-dev.git

[SPARC64]: Mirror x86_64's PERCPU_ENOUGH_ROOM definition.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index cc09d826641..0a4958536bc 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -1447,11 +1447,8 @@ void __init setup_per_cpu_areas(void)
 	char *ptr;
 
 	/* Copy section for each CPU (we discard the original) */
-	goal = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
-#ifdef CONFIG_MODULES
-	if (goal < PERCPU_ENOUGH_ROOM)
-		goal = PERCPU_ENOUGH_ROOM;
-#endif
+	goal = PERCPU_ENOUGH_ROOM;
+
 	__per_cpu_shift = 0;
 	for (size = 1UL; size < goal; size <<= 1UL)
 		__per_cpu_shift++;
diff --git a/include/asm-sparc64/percpu.h b/include/asm-sparc64/percpu.h
index ced8cbde046..0d3df76aa47 100644
--- a/include/asm-sparc64/percpu.h
+++ b/include/asm-sparc64/percpu.h
@@ -5,6 +5,16 @@
 
 #ifdef CONFIG_SMP
 
+#ifdef CONFIG_MODULES
+# define PERCPU_MODULE_RESERVE 8192
+#else
+# define PERCPU_MODULE_RESERVE 0
+#endif
+
+#define PERCPU_ENOUGH_ROOM \
+	(ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES) + \
+	 PERCPU_MODULE_RESERVE)
+
 extern void setup_per_cpu_areas(void);
 
 extern unsigned long __per_cpu_base;