[PATCH] Alpha increase PERCPU_ENOUGH_ROOM

[Aneesh Kumar K.V]

Module loading on Alpha was failing with error
"Could not allocate 8 bytes percpu data".

Looking at dmesg we have the below error
"No per-cpu room for modules."

Increase the PERCPU_ENOUGH_ROOM in a similar way as x86_64

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxx>
---
 include/asm-alpha/percpu.h |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/include/asm-alpha/percpu.h b/include/asm-alpha/percpu.h
index 48348fe..651ebb1 100644
--- a/include/asm-alpha/percpu.h
+++ b/include/asm-alpha/percpu.h
@@ -1,6 +1,20 @@
 #ifndef __ALPHA_PERCPU_H
 #define __ALPHA_PERCPU_H
 
+/*
+ * Increase the per cpu area for Alpha so that
+ * modules using percpu area can load.
+ */
+#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)
+
 #include <asm-generic/percpu.h>
 
 #endif /* __ALPHA_PERCPU_H */
-- 
1.4.4.2.gdb98-dirty